Proceeding ICOME 2015

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Proceeding ICOME 2015 at Bali Indonesia

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  • The 2nd International Conference on Mechanical Engineering

    ICOME 2015

    The Department of Mechanical Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember, Indonesia, are proudly organizing the 2nd International Conference on Mechanical Engineering ICOME 2015, with its theme Mechanical Science and Technology for Sustainable Energy. ICOME 2015, which is held in Bali, Indonesia on September 3-5, 2015, offers a great opportunity to bring together researchers, scientists, and industrial professionals around the globe to exchange new ideas and information. It also provides a forum to discuss the most recent development and trends in mechanical science and engineering related fields.

    It is our pleasure to present this ICOME 2015 Participant Guide Book. This book includes the keynote abstracts, conference schedule, details of parallel sessions and venue layout.

    All papers which are presented in the conference will be published in the nominated journals. Therefore, all of the accepted papers have been thoroughly peer reviewed by experts in the related area in order to meet the scientific publication standards.

    On behalf of the conference organizers, we would like to thank all of the authors who have spent tremendous amount of time to contribute their findings. We also would like to highly appreciate all of the reviewers for their dedications, comments and suggestions such that the accepted papers have met the international journal standard. The last but not least, we gratefully acknowledge the committee members, individuals and sponsors for their supports and contributions in ICOME 2015.

    We hope this conference enriches your research and knowledge, and you enjoy your stay in Bali!

    Sincerely yours,

    ICOME 2015 Committee

    Advisory Committee Rector of ITS Surabaya, Indonesia

    Dean of Industrial Technology Faculty ITS, Indonesia

    Dr. Bambang Pramujati (ITS, Indonesia)

    Prof. Jiing Yih Lai (NCU, Taiwan)

    Prof. I Nyoman Suprapta Winaya (UNUD, Indonesia)

    Organizing Committee General Chair : Dr. Bambang Arip Dwiyantoro General Co-Chair : Dr. Unggul Wasiwitono Program Chair : Vivien Suphandani, PhD. Program Co-Chair : Moch. Solichin, MT. Finance Chair : Dr. Wiwiek Hendrowati Finance Co-Chair : Ika Dewi Wijayanti, MSc Finance Advisor : Indra Sidharta, MSc. Publication Chair : Alief Wikarta, PhD Publication Co-Chair : Dinny Harnany, MSc. Publicity Chair : Arif Wahjudi, PhD. Publicity Co-Chair : Aida Annisa Amin Daman, MT. Publicity Co-Chair : Dedy Zulhidayat Noor, PhD Publicity Co-Chair : Ari Kurniawan Saputra, MT.

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    TABLE OF CONTENTS.......................................................................................................................... 1

    Keynote speech abstracts................................................................................................................... 8

    Conference Program ........................................................................................................................ 13

    Parallel session 1 .......................................................................................................................... 16

    Parallel session 2 .......................................................................................................................... 18

    Parallel session 3 .......................................................................................................................... 20

    Parallel session 4 .......................................................................................................................... 22

    Parallel session 5 .......................................................................................................................... 24

    Parallel session 6 .......................................................................................................................... 26

    Energy, Heat Transfer and Fluid Flow................................................................................................ 28

    Engine test stand layout and post processing tools for the detection of many engine performance parameters .................................................................................................................................. 29

    Flame Stability Measurement on Rectangular Slot Meso-scale Combustor ...................................... 30

    The Effect of Nitrogen on Flame Characteristics in Biogas External Premixed Combustion ................ 31

    Waste Fish Oil Biodiesel Production and Its Performace in Diesel Engine ......................................... 32

    Influence of the compression ratio and injection timing on Sinjai Engine Performance with 50%

    BioethanolGasoline blended fuel ................................................................................................. 33

    Optimization of WaterScrubbingMethod for Enhancement of Biogas Quality through Base Solutions Addition ....................................................................................................................................... 34

    Experimental Study of Thermal Efficiency on Plate-Fin Solar Thermal Collector ................................ 35

    Effect of Number of Transfer Unit of Heat Exchangers on the System Performance of an Organic Rankine Cycle System ................................................................................................................... 36

    Experimental Study the Effect of Angle of Blade Inclination on Coal Swirl Fluidized Bed Drying ......... 37

    Effect ofMassFlowRateon aDryerRoomRadiator Pressure Drop and Heat Transfer............................ 38

    Flow and Heat Transfer Enhancement Around Staggered Tubes Using Rectangular Vortex Generators

    .................................................................................................................................................... 39

    Improved Junction Temperature Measurement for High Power LED ................................................ 40

    Bottom Shear Stress and Bed Load Sediment Transport Formula for Modeling the Morphological Change in the Canal Water Intake.................................................................................................. 41

    Base aspect ratio effects on resonant fluid sloshing in a rectangular tank......................................... 42

    Synthesis of BiFeO3 Nanoparticle and Single Phase by Sol-Gel Process for Multiferroic Material ...... 43

    Numerical Simulation of vortex-induced vibration using OpenFOAM ............................................... 44

    Numerical Modeling of Vortex-induced Vibration in Turbulent Flow ................................................ 45

    TABLE OF CONTENTS

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    Characteristics of Decompression Tank Internally Pressurized With Water Using OpenFOAM ........... 46

    A CFD Analysis of the Viscous Fluid Behavior of Glycerin in Various of Stirring Patterns.................... 47

    Characteristics Of Two Phase Fluid Flow In Pipe Bends.................................................................... 48

    Effect of Impeller Condition on Blower Performance, Case Study : Impeller of K-2201 in PT.

    PERTAMINA RU III......................................................................................................................... 49

    Bottom Shear Stress and Bed Load Sediment Transport Due to Irregular Wave Motion .................... 50

    Design of NACA 4415 Taperless Twistless Wind Turbine Blade Using Twist Optimization for Indonesia Wind Characteristics ..................................................................................................................... 51

    Rheology Margarine on Non-Newtonian Fluid Proving Through Small Gap ...................................... 52

    Numerical Investigation of Dynamic Stall Behavior on Single Bladed Darrieus Turbine Airfoil Section 53

    Experimental Study of the Cross flow Turbine ................................................................................ 54

    Analysis of Turbulence Characteristics in the Laminar Sub-Layer Region of a Perturbed Turbulent Boundary Layer ............................................................................................................................ 55

    Model of Ground Water Elevation Around Mud Reservoir in Coastal Area of Porong Sidoarjo ........... 56

    Numerical simulation of cross-flow around four circular cylinders in-line square configuration near a

    plane wall .................................................................................................................................... 57

    CFD based investigations into optimization of diffuser angle on rear bus body ................................ 58

    Numerical Studies of The Influence of Tube Bank Configuration In A Staggered Arrangement of Tubes to Heat Transfer and Flow Characteristics of Fluid .......................................................................... 59

    Test Equipment Design of Thermosyphon Effects On Passive Solar Water Heating System ............... 60

    Experimental Study of Heat Transfer Characteristics of Solar Water Heater Collector with Addition Wavy Fins on Pipe......................................................................................................................... 61

    The Role of Heterogeneous Nucleation in Water Based Phase Change Material for Medium

    Temperature Refrigeration............................................................................................................ 62

    Performance Modeling of A Wave Energy Converter: Pembangkit Listrik Tenaga Gelombang Laut Sistem Bandulan (PLTGL-SB) ....................................................................................................... 63

    Strategy in reducing the pace of the greenhouse gas emission from the electricity sector in Southeast Sulawesi....................................................................................................................................... 64

    Calculation of Potential Wind Power in Indonesia by Using High Altitude Wind Energy method ........ 65

    Feasibility Analyses of Grid/Wind/PV Hybrid Systems for Industrial Application............................... 66

    Cooling Load Estimation to Determine the Proper Capacity of Air Conditioners in the Engineering Building at Engineering Academy of Soroako .................................................................................. 67

    The variety of furniture arrangement inside apartment unit around Jabodetabek area to improve

    COPc ............................................................................................................................................ 68

    CFD analysis on thermal comfort and indoor air quality affected by partitions in air-conditioned building........................................................................................................................................ 69

    Analysis of Effect of Sub Cooling Performance of Vapour Compression Refrigeration System With Cooling Load Variation .................................................................................................................. 70

    Performance Improvement Using Subcooling on Freezer with R22 and R290 as Refrigerant for Various

    Ambient Temperatures ................................................................................................................. 71

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    Numerical Investigation on Ejector as an Expansion Device Using R290 in Residential Air Conditioner for Various Cooling Capacity.......................................................................................................... 72

    Improvement of Savonius Blade to Overcome Dead Band on Hybrid VAWT Savonius-Darrieus for New and Renewable Energy Cluster for Tropical Country........................................................................ 73

    A Couple of Savonius Wind Mill and Centrifugal Reaction Pump as a Wind Energy Water Pump System.................................................................................................................................................... 74

    Simulation Savonius Wind Turbine with Multi-Deflector ................................................................. 76

    The Dynamic Characteristics of Vertical Axis Wind Turbine Type H .................................................. 77

    Investigation Of Factors Affecting Power Curve Wind Turbine Blade ................................................ 78

    Numerical study of mixed convection around a heated circular cylinder .......................................... 79

    Convective Regimes on Porous Media within Sudden Changed Channel Due to Tangential Gas Flow . 80

    Predicting Temperature Profile and Temperature History for Varied Parameters of a Welding Process

    Using Rosenthals Approach for Semi-infinite Solid ......................................................................... 81

    Extraction of Essential Oils from Patchouli Plant Using Advanced Techniques of Microwave -Assisted Hydrodistillation ........................................................................................................................... 82

    The Utilization of Paraffin And Beeswax as Heat Energy Storage in Infant Incubator ......................... 83

    Efficiency of Household Gas Stove by Optimizing Gap of Pan and Stove Cover.................................. 84

    Design Concept of Small Long-Life PWR Using Thorium Fuel M........................................................ 85

    The Effect of Pretreatment and Variety of Microorganisms to the Production of Ethanol from Coffee Pulp ............................................................................................................................................. 86

    DEGRADATION OF GLYCEROL WITH SONICATION METHOD: the influence of the addition of a

    heterogeneous catalyst................................................................................................................. 87

    The Effect of Nitrogen Stress in Medium for Increasing Carbohydrate as A Bioethanol Source and Carotenoid as An Antioxidant from Chlorella Zofingiensis Culture.................................................... 88

    The Effect of Rumen and Mixed Microorganism (Rumen and Effective Microorganism) on Biogas Productionfrom Rice Straw Waste ................................................................................................. 89

    Study of Composition of Water Mulsion Fuel by Taguchi Experimental Method ............................... 90

    The Calorific Values of Solid and Liquid Yields Consequenced by Temperatures of Mahogany Pyrolysis

    .................................................................................................................................................... 91

    The Effect of CO2 Fraction on the Flame Stability of Biogas Premixed Flame ................................... 92

    Design and Modeling Pile Breakwater for LNG Jetty at Senoro Field, Central Sulawesi ..................... 93

    Mechanical Design, Structure, Vibration ........................................................................................... 94

    Experimental Study on the Dynamic Characteristics of Hydro-Magneto-Electric-Regenerative Shock

    Absorber ...................................................................................................................................... 95

    Peristaltic Mechanism to Mimic The Esophageal Swallowing Process............................................... 96

    Thrust Force of Three Circular Windings of Conductor in Magnetic Field .......................................... 97

    An Improved Load-Displacement Prediction For A Coned Disc Spring Using The Engergy Method...... 98

    Stress Analysis for a Substrate Holder Module and Thin Films Grown in an MOCVD Reactor ............. 99

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    Analysis of the Influence of Hydraulic Cylinder Diameter to the Total Damping Force and the Generated Electricity of Regenerative Shock Absorber.................................................................. 100

    Response Reduction of Two DOF Shear Structure Using TMD and TLCD by Considering Absorber Space Limit and Fluid Motion ................................................................................................................ 101

    Anchor Strength Analysis for Mooring of a Floating Breakwater in Senoro Field, Central Sulawesi ... 102

    Mechanical Analysis of the Prosthetic Knee in Flexion................................................................... 103

    Finite element analysis of asymmetric stent for treatment of eccentric plaque .............................. 104

    An Improved Energy Based Load-Displacement Prediction for Slotted Disc Spring .......................... 105

    Influence of Spring Ratio on Variable Stiffness and Damping Suspension System Performance........ 106

    Design and Modeling Fender System for Condensate and Sulphuric Acid Jetty at Senoro Field, Central Sulawesi..................................................................................................................................... 107

    Modeling of a Shell Eco-marathon vehicle based on drive-train characteristic and driver modes to

    predict fuel consumption of the vehicle on a specific track............................................................ 108

    Study the effects of adjustment of highest and lowest SOC allowed in battery on fuel consumption and emission of series hybrid vehicle using ADVISOR .................................................................... 109

    Simulation Of Two Segments Crash Box Subjected To Frontal Load................................................ 110

    Experimental Study And Analysis Of The Generated Electric Power of Salter Duck-Ocean Wave Energy Harvester (OWEH) Due To Additional Weight Change and Wave Amplitude ................................... 111

    Analysis of Wave Climate Variations Based on ERA-Interim Reanalysis Data from 1980 to 2014 To

    Support Wave Energy Assessment in Indonesia ............................................................................ 112

    Simplicity Design of Hybrid Energy of Marine Current and Offshore Wind Energy Plant in Indonesia 113

    Material and Metallurgy ................................................................................................................ 114

    High Temperature Corrosion of Aluminized AISI 1020 Steel With NaCl and Na2SO4 Coatings ........... 115

    Investigations of the Mixed Mode Crack Growth Behavior of an Aluminum Alloy ........................... 116

    Morphology of crown tube Austenitic Stainless Steel TP316 HTF failure......................................... 117

    Effect of Volume Fraction Epoxy-Hollow Glass Microspheres and Curing Temperature Variations on Compressive Properties of Composites ....................................................................................... 118

    Experimental Study Of Electrode Selection Effects On Mechanical Properties Of Underwater Wet Welded-Joints ............................................................................................................................ 119

    Experimental Study Of The Influence Of Quenching And Partitioning Temperature Variation On Retained Austenite Fraction In AISI 4140 Steel ............................................................................. 120

    Aging Behavior in Co-Cr-Mo-C Alloys............................................................................................ 121

    The Production Study of Bipolar Plate From Cuprum-Carbon Nanocomposite in Polypropylene Matrix

    (PP) for the Fuel Cell Application.................................................................................................. 122

    Effect of Hydrogen Addition on the Characteristics of Nitrided Martensitic Stainless Steel AISI 420 . 123

    Effect of Composition on the Microporosity, Microstructure, and Macrostructure in the Start-Up Direct-Chill Casting Billet of Al-Cu Alloys ...................................................................................... 124

    Metallography Investigation of Dry Corrosion Boiler Tube............................................................. 125

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    Effects of Deformation and Annealing Temperature on the Microstructures and Mechanical Properties of Cu-32%Zn Brass ...................................................................................................................... 126

    The Use of Magnetic Flux to the Welding of Hot Roll Quench Tempered Steel................................ 127

    Effect of Variation of Kalium Hydroxide Solution Concentrationand Temperatureto The Corrosion Resistance of AISI 304, AISI 316, and Copper Alloysin Water Electrolysis Apparatus ........................ 128

    Effect of Low Temperature Sintering on the Porosity and Microstructure of Porous Zeolite Ceramic 129

    Electrochemical Performances of LiFePO4/C AS Cathode for Aqueous Electrolyte Lithium-Ion Battery.................................................................................................................................................. 130

    Synthesis of BiFeO3 Nanoparticle and Single Phase by Sol-Gel Process for Multiferroic Material ..... 131

    Biomechanical Analysis Of Spider Silk For Anterior Cruciate Ligament Reconstruction .................... 132

    Strength Analysis of ZnO-Al2O3 Nanocomposite for Implant Material Innovation........................... 133

    Effect of Carbon Coating on Electrochemical Performances of LiTi2(PO4)3 as Anode for Aqueous

    Electrolyte Lithium Ion Battery .................................................................................................... 134

    Effect of Temperature And Time of Two-Step Austempering Method on Mechanical Properties for Nodular Cast Iron ....................................................................................................................... 135

    Effect of Adhesive Layer Thickness on the Shear Strength of Adhesively Bonded Steel Joints in Wet Environment .............................................................................................................................. 136

    Effect of Fillers Content on Mechanical Strength and Failure Mode of Aluminium Bonded with Epoxy-

    Based Adhesive .......................................................................................................................... 137

    Effects of Citric Acid/BaTiO3 Weight Fractions and Time of Sintering in Sol Gel Process on Electric Saturation Polarization Values and Phase Composition ................................................................. 138

    The Effect Of Dromus Oil Level In Cooling Media On Tensile Strength And Microstructure Of St-60 Steel Due toHardening Tempering Process ................................................................................... 139

    Friction Stir Welding on Corner Joint With New Surface Preparation Design................................... 140

    Influence of Argon-Nitrogen Gas to balance the microstructure in the welding of Super Duplex

    Stainless Steel ............................................................................................................................ 141

    Manufacturing ............................................................................................................................... 142

    Development of technology for rolling and smoothing with heating the inner sides of cylindrical holes to improve the quality of workpieces in the machine building. ...................................................... 143

    Investigation of Risk Based Decision Making for Mobile Mooring System ....................................... 144

    Characteristics of Electrode Materials on Machining Performance of Tool Steel SKD11 with EDM Shinking ..................................................................................................................................... 145

    Relationship Model for an Automotive Sustainable Supply Chain .................................................. 146

    Numerical simulation of cutting stress deformation in tungsten carbide turning tools .................... 147

    Flexible and Ergonomically Three Wheel Bike For Post Stroke Patient ............................................ 148

    Improving the Injection Molding of Small Optical Elements by Integrating Reverse Engineering and Mold Flow Analysis ..................................................................................................................... 149

    Evaluation of Delay Factors in Jacket Structure Project ................................................................. 150

    Injection Molding Process Simulation of Tensile Strength and Impact Specimen Test...................... 151

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    Small Bussiness Simulation.......................................................................................................... 152

    An Innovative Concept to Improve the Muffler Performance Using Automated Mechanical IRIS ..... 153

    The Effect of Welding Time and Welding Currents on Weld Nugget and Tensile Properties of Thin Aluminum A1100 by Micro Resistance Spot Welding .................................................................... 154

    Optimization of Cable Ties Injection Molding Process Using Back Propagation Neural Network and Genetic Algorithm (BPNN-GA) ..................................................................................................... 155

    Anti-plane Interaction of a Coated Circular Inclusion with a Crack Located in Matrix....................... 156

    Optimization Of Multiple Performance Characteristics in EDM Process of HPM 38 Steel Using Response Surface Methodology And Non-Linear Programming ..................................................... 157

    A Waste Relationship Matrix Model for Better Green Lean Product in Water Processing ................ 158

    Multiple-Performance Optimization of Drilling Parameters And Tool Geometries in Drilling GFRP

    Composite Stacks Using Taguchi and Grey Relational Analysis (GRA) Method................................. 159

    Tempering Process Gradually to Improve Quality Tool .................................................................. 160

    Multi Response Optimization using Taguchi-Grey-Fuzzy Method in Drilling of Kevlar Fiber Reinforced Polymer (KFRP) Stacked .............................................................................................................. 161

    The Effects of Pulse On Time and Arc On Time on Surface Quality in Wire- EDM of ASSAB XW-42 and ASSAB 8407 2M Tool Steels ......................................................................................................... 162

    Modeling of Well Service and Workover to Optimize Scheduling of Oil Well Maintenance .............. 163

    Optimization Of Multi Response Using Taguchi Grey-Fuzzy End Milling Process Material ASSAB XW-42

    With Liquid Nitrogen Cooling....................................................................................................... 164

    Groove Overhang Impact on the Result of Surface Roughness on Vertical CNC Milling Process........ 165

    Optimization of Multiple Response Characteristics in the WEDM Process of Buderus 2379 ISO-B Tool Steel Using Taguchi-Grey-Fuzzy Logic Method .............................................................................. 166

    Simulation Of Ironing Process For Bullet Case To Get Minimum Forming Force With Variation Of Die Angle And Reduction Wall Thickness............................................................................................ 167

    Modelling and Simulation Analysis of Solenoid Valve for Spring Constant Influence to Dynamic

    Response ................................................................................................................................... 168

    Optimization ofMultiple Performance Characteristics inWire Electrical Discharge Machining (WEDM) Processof Buderus 2080 Tool Steel Using Taguchi-Grey-Fuzzy Method .......................................... 170

    A Review Paper on Product Surface Defect Detection of Ironing Process........................................ 171

    Parametric Optimization Of Wire Electrical Discharge Machining Process On AISI H13 TOOL Steel Using Weighted Principal Component Analysis (WPCA) And Taguchi Method .......................................... 172

    The Influence Of Binder Variation Using Eruption Kelud Sand On Sand Mold Strength, Quality And Fluidity Results On Al-Si Metal Casting ......................................................................................... 173

    Optimization of Multi Response Using Taguchi-Grey-Fuzzy of Cryogenic Cooling in Face Milling

    Material ASSAB XW42 ................................................................................................................. 174

    Mechatronics and Control System .................................................................................................. 175

    Reconfiguration of modular robotic system MECABOT ............................................................ 176

    Dimensionally Homogeneous Jacobian and Conditioning Number ................................................. 177

    Navigation and Guidance Control System of AUV with Trajectory Estimation of Linear Modelling.... 178

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    Hardware-In-The-Loop Simulation and Digital Control of Double Inverted Pendulum ..................... 179

    Inverse Kinematics Modelling for Writing Robot Control Using ANFIS ............................................ 180

    Type Synthesis of Two DOF Hybrid Translational Parallel Manipulators .......................................... 181

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    Keynote speech abstracts

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    Technology is The Key Enabler for Energy Sustainability

    Lukman Mahfoedz

    PT. Medco Energi Internasional Tbk.

    Nearly half of 7.7 million barrel oil equivalent per day of primary energy Indonesia needs in 2025 will

    have to come from oil and gas. In the present day, oil and gas production level at around 2.2 million

    barrel oil equivalent per day, which keeps declining, , should alert the government that urgency of

    action is needed to secure Indonesias future energy supply and energy sustainability. To provide 47% of

    total primary energy need in 2025, or 3.7 million barrels oil equivalent per day, is to be the main growth

    engine of Indonesia. Current estimate puts 2.5 million barrel oil equivalent per day gap between demand and supply in 2025.

    The era of easy oil or gas is over. According to WoodMac study, 75% of the potential resources are

    located offshore (shallow and deep water) in East Indonesia region, the likes of which will need technical

    expertise, massive funding and advance technology. Furthermore, around 85% of the existing reserves

    of hydrocarbons are of gas while only 15% are of oil, which means infrastructure is critically required to

    develop them. In addition, the hydrocarbon source identified in several blocks are technically

    challenging due to high content of of CO2 or other impurities that is requiring expensive treating facilities.

    Indonesia future energy supply is still under developed, including coal bed methane potentials of 453

    TCF, shale gas potential of 574 TCF, other 17.9 billion BOE of hydrocarbon potential and 121 billion ton

    of coal resources. On renewables, Indonesia own 40% of worlds geothermal resources potential of

    29,000 MW, hydro power potential of 75,000 MW, Biomass of 49,810 MW and huge renewable resources from biofuel, solar, wind and ocean energy.

    Any future development of the remaining resources calls for advanced technology support, higher

    investments, special expertise, as well as simpler bureaucracy to shorten reserve monetization process.

    Technology plays an important role to monetize hydrocarbon potentials and to increase energy supply.

    New technology invention in hydraulic fracturing created rapid development of shale resources in US

    and become the leader of shale oil and gas producer in the world which its oil production reached 10

    million bopd. Enhanced Oil Recovery (EOR) utilizes chemical to ease remaini ng hydrocarbon into

    production and new technology to process high CO2 gas are also required to accelerate monetization of huge hydrocarbon potential in Indonesia.

    Our challenges are how to invent new technology to develop remaining energy resources in Indonesia as

    well as how to implement technology mastering. Technology requires significant investment through

    research and development. Academics play key important role in technology invention and should

    become the center of research and development. Indonesia requires a new partnership breakthrough in

    technology invention, where the collaboration among Academia, Business players and Government

    would invent and master the required technology to monetize energy potentials for energy sustainability.

    Keywords: technology, oil and gas, deepwater, massive investment, coal bed methane, shale oil/gas,

    enhanced oil recovery, geothermal, academia, business player, government.

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    High Thermal Conductive Composite Containing a Network of Carbon Fiber and

    Carbon Nanotube in Aluminum Matrix

    Katsuhiko Sasaki

    Department of Mechanical and Intelligent System Engineering

    Division of Human Mechanical Design and System

    Hokkaido University,

    Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 0608628 Japan

    Recently, CNT was used for composite whose base material is aluminum because ranges of industrial

    application for the metal based composite material is quite wide. In this paper, high thermal conductive

    composite is fabricated by Spark Plasma Sintering (SPS) from aluminum powder and carbon fiber (CF).

    The 10wt% of aluminum-silicon alloy is added to the aluminum powder for the improvement of the

    interface adherence between CF and aluminum. Carbon nanotube (CNT) is also dispersed on CF fillers

    for further improvement of the thermal conductivity of the composite. As a result, the composites

    fabricated have about three times higher thermal conductivity than the pure aluminum. Especially, a

    small amount dispersion of CNT into CF leads to the large improvement of the thermal conductivity.

    Analyses of finite element method (FEM) are conducted to understand mechanisms of the improvement

    of thermal conductivity by the dispersion of CNT. The FEM analysis shows that CF-CNT networks play

    important roles for the improvement of the thermal conductivity. The effect of the thermal conductivity

    on the thermal efficiency of the cooling system of IGBT is also investigated by FEM as one of applications

    of the composite. The effect of the thermal anisotropy is, especially, focused on to show the important

    role of the thermal anisotropy. Moreover, a method to improve the thermal conductivity of the

    composite is shown to decrease the fabrication costs by decreasing in the usage of CF and CNT. Control

    of alignments of VGCF is chosen for the method. The alignment is controlled by the contraction flow

    made by a contraction channel. The experiments show that the contraction flow is effective to control

    the alignment of VGCF.

    Key words: Thermal Conductivity, Composite, Carbon nanotube, Finite Element Method, Aluminum

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    Metal Hydride Based Energy Storage: From Materials to Systems

    Volodymyr A. Yartys

    Norwegian University of Science and Technology, Trondheim, Norway and

    Institute for Energy Technology, Kjeller, Norway

    Hydrogen Cycle based on use of hydrogen and electricity as energy carriers has an advantage of having a zero emission footprint, complemented by high gravimetric energy density of hydrogen. This makes hydrogen energy technology a perfect choice for integrating into the mobile and stationary energy systems. Metal hydrides offer a safe, convenient and efficient way to reversibly accommodate large amounts of hydrogen gas thus creating a platform for building hydrogen driven energy systems where efficiency of reversible conversion of electricity and hydrogen is crucial. A number of requirements should be addressed to improve the system performance. These include achieving high volumetric and gravimetric hydrogen densities; improved energy efficiency of hydrogen production, storage and conversion into electricity; decreased costs and increased life time of hydrogen energy storage. The talk will review our recent studies of two applications of the metal hydrides including (a) Thermally driven MH compression of hydrogen gas and (b) High power metal hydride batteries. Nanostructuring and synthesis of nanocomposites have been successfully applied as the ways to improve the rates of hydrogen exchange during the exothermic/endothermic hydrogen charge and discharge in the hydrogen storage and compression units and the rates of the electrode charge and discharge in the metal hydride batteries. We will present the data of in situ neutron scattering characterization of the metal-hydrogen systems during hydrogen absorption and desorption at applied pressures reaching 1000 bar H2 and of charge-discharge of the metal hydride electrodes at high current densities. These data allowed to model the mechanism and kinetics of the processes of hydrogen exchange in the metal hydrides and to optimize their performance. Finally, various approaches in improving the operation of the metal hydride compressors and rechargeable batteries will be presented and the future trends of the development in the area will be outlined.

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    Application of Numerical Simulation to Silicon Crystal Growth Process

    Jyh-Chen Chen

    Department of Mechanical Engineering, National Central University, Jhongli City, 32001, Taiwan

    The photovoltaic (PV) system installation is booming since 2010. The large-scale PV generation costs

    already compare with conventional electricity production today. One of major contributions is due to

    the development of the silicon growth techniques, which are able to produce the high quality and low

    cost silicon wafer of solar cells. In this study, the numerical simulation technique is used to understand

    the heat, flow and impurity transport during the process of silicon growth. Two main crystal growth

    methods are investigated: Czochralski (CZ) and Directional Solidification (DS). The CZ method is

    commonly used in industry for producing the mono silicon crystal, while the DS one is widely adopted

    for manufacturing the multicrystalline silicon ingot. The oxygen impurities can be incorporated into the

    mono silicon crystal during the CZ process leading to degeneration in the performance of solar cells.

    Through the numerical simulation, we are able to understand the transport mechanisms of oxygen

    impurities during the CZ growth process and achieve the lower and homogeneous oxygen concentration

    in the silicon crystal by adjusting the furnace structure and the operational parameters during the

    growth process. On the other hand, the challenge of the DS method is how to grow larger ingot with

    higher yield and quality. To achieve this goal, the slightly convex shape of the melt-solid interface during

    the DS growth process is required. The best m-c interface shape for growing the 800 kg silicon ingot can be attained by the suitable modification of furnace structure.

    Keywords: silicon solar cells, numerical simulation, Czochralski crystal growth, directional solidification

    growth

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    Conference Program

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    The 2nd International Conference on Mechanical Engineering

    Wednesday, September 2, 2015

    15.00-18.00 Registration

    The Denpasar Ballroom

    Thursday, September 3, 2015

    08.00 - 08.30 Registration

    The Denpasar Ballroom

    08.30 - 09.00 Opening Ceremony

    The Denpasar Ballroom

    09.00 - 09.45 Keynote speech I:

    Ir. Lukman Mahfoedz Moderator: Budi Utomo K. Widodo

    09.45- 10.30 Keynote speech II:

    Prof. Katsuhiko Sasaki Moderator: Unggul Wasiwitono

    10.30 - 10.45 Coffee Break

    10.45 - 11.30 Keynote speech III:

    Prof. Volodymyr Yartys Moderator: Suwarno

    11.30 - 12.15 Keynote speech IV:

    Prof. Jyh-Chen, Chen Moderator: Bobby Oedy P. Soepangkat

    12.15 - 13.30 Lunch

    13.30 - 15.00 Parallel Session 1

    15.00 - 15.15 Coffee Break

    15.15 - 17.15 Parallel Session 2

    19.00 - 21.00 GALA DINNER

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    Friday, September 4, 2015

    08.00 - 08.30 Registration

    08.30 - 10.00 Parallel session 3

    10.00 - 10.15 Coffee break

    10.15 - 11.30 Parallel session 4

    11.30 - 13.30 Lunch

    13.30 - 15.00 Parallel session 5

    15.00 - 15.15 Coffee break

    15.15 - 17.00 Parallel session 6

    Saturday, September 5, 2015

    08.00-20.00 Tour (Optional, at additional cost)

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    Thursday, September 3, 2015 Parallel session 1 : 13.30 - 15.00

    Room A Room B

    Energy, Heat Transfer and Fluid Flow Energy, Heat Transfer and Fluid Flow

    Chair : Budi Utomo K. Widodo Chair: Ming-Jyh Chern

    13.30 - 13.45

    10 Engine test s tand layout and post processing tools

    for the detection of many engine performance parameters

    Marco Bietresato, Massimiliano Renzi, Simone

    Mischiatti and Fabrizio Mazzetto

    80 Experimental Study of Thermal Efficiency on Plate -

    Fin Solar Thermal Collector

    Tri Ayodha Ajiwiguna, Tesla Hamonangan and

    Muhammad Ramdlan Kirom

    13.45 - 14.00

    36

    Flame Stability Measurement on Rectangular Slot Meso-scale Combustor

    Satworo Adiwidodo, I.N.G. Wardana, Lilis Yuliati and Mega Nur Sasongko

    97

    Effect of Number of Transfer Unit of Heat Exchangers on the System Performance of an Organic Rankine Cycle System

    Chien-Yuh Yang and Alireza Jafari

    14.00 - 14.15

    125

    The Effect of Nitrogen on Flame Characteris tics in Biogas External Premixed Combustion Willyanto Anggono, Fandi Dwiputra Suprianto,

    Kenny Purnomo, Tan Hartanto and Tubagus Wijaya

    110

    Experimental Study The Effect of Angle of Blade Inclination on Coal Swirling Fluidized Bed Drying Melvin E. Simanjuntak, Prabowo and Ahmad Sefriko

    14.15 - 14.30

    134

    Waste Fish Oil Biodiesel Production and Its Performace in Diesel Engine

    Kusmiyati, Triana Retno Pratiwi and Tri Wulandari

    126

    Effect of Mass Flow Rate on a Dryer Room Radiator Pressure Drop and Heat Transfer

    Mirmanto Mirmanto, Emmy Sulistyowati and I Ketut Okariawan

    14.30 - 14.45

    227 Influence of the compression ratio and injection

    timing on Sinjai Engine Performance with 50% BioethanolGasoline blended fuel Bambang Sudarmanta, Bambang Junipitoyo, Ary Bachtiar Krisna Putra and I. Nyoman Sutantra

    156 Flow and Heat Transfer Enhancement Around

    Staggered Tubes Using Rectangular Vortex Generators Prabowo Prabowo, Melvin Emil S. and Nanang R, Rizki Anggiansyah.

    14.45 - 15.00

    166 Optimization Of Water Scrubbing Method For Enhancement Of Biogas Quali ty

    Hendry Sakke Tira, Yesung Allo Padang, Tri Rachmanto and Ahmad Alfan Syahida

    130 Improved Junction Temperature Measurement for High Power LED

    Tri Ayodha Ajiwiguna, Hun Sik Han and Seo Young Kim

  • The 2nd International Conference on Mechanical Engineering | 17

    Thursday, September 3, 2015 Parallel session 1 : 13.30 - 15.00

    Room C Room D

    Mechanical Design, Structure, Vibration Manufacturing

    Chair: Alief Wikarta Chair: Jiing-Yih Lai

    13.30 - 13.45

    15 Experimental Study on the Dynamic Characteristics

    of Hydro-Magneto-Electric-Regenerative Shock Absorber

    Harus Laksana Guntur and Wiwiek Hendrowati

    32 Development of technology for rolling and

    smoothing with heating the inner sides of cylindrical holes to improve the quality of workpieces in the

    machine building.

    Kotelnikov V.I, Koshurina A.A, Gavrilov G.N and Chernyshov D.A

    13.45 - 14.00

    6 Peris taltic mechanism to mimic the esophageal swallowing process

    Alberto Caballero Ruiz, Juan Alejandro Hernandez-Angulo, Monserrat Ramirez-Calera, Gabriel Ascanio and Leopoldo Ruiz-Huerta

    46 Investigation of Risk Based Decision Making for Mobile Mooring System

    Silvianita Silvianita, Mohd Faris Khamidi, Kriyo Sambodho, Nur Syahroni, Yeyes Mulyadi and Muhammad Zikra

    14.00 - 14.15

    50 Thrust Force of Three Circular Windings of Conductor in Magnetic Field

    Sigit Iswahyudi and Wandi Arnandi

    174 Characteris tics of Electrode Materials on Machining Performa of Tool Steel SKD11 with EDM Sinking

    Suhardjono Suhardjono

    14.15 - 14.30

    95

    An Improved Load-Displacement Prediction for A Coned Disc Spring using the Energy Method

    Noor Fawazi and Jung-Youn Lee

    89

    Relationship Model for a Sustainable Automotive Supply Chain

    Halim Shah Hamzah, Shari Mohd Yusof, Muhammad Zameri Mat Saman and Rozetta Dolah

    14.30 - 14.45

    17 Stress Analysis for a Substrate Holder Module and

    Thin Films Grown in an MOCVD Reactor Shu-Wei Guo and Chih-Kuang Lin

    119 Numerical simulation of cutting s tress deformation

    in tungsten carbide turning tools Pei-Hsing Huang, Jian-Rong Chen and Hong-Zhong Lu

    14.45 - 15.00

    16

    Analysis of the Influence of Hydraulic Cylinder Diameter to the Total Damping Force and the Generated Electrici ty of Regenerative Shock Absorber

    Harus Laksana Guntur

    222

    Flexible And Ergonomically Three Wheel Bike For Post Stroke Patient

    I Made Londen Batan, Syifa and Danny Prasetyo

  • The 2nd International Conference on Mechanical Engineering | 18

    Thursday, 3 September 2015 Parallel session 2: 15.15 - 17.15

    Room A Room B

    Material and Metallurgy Energy, Heat Transfer and Fluid Flow

    Chair: Luis Ruiz Crdenas Chair: Dedy Zulhidayat Noor

    15.15 - 15.30

    8 High Temperature Corrosion of Aluminized AISI

    1020 Steel With NaCl and Na2SO4 Coasting

    Mohammad Badaruddin, Dwi Asmi and Willy Adriansyah

    190 Bottom Shear Stress and Bed Load Sediment

    Transport Formula for Modeling the Morphological Change in the Canal Water Intake

    Made Mustika Wijaya, Suntoyo and Happy Ayu Damerianne

    15.30 - 15.45

    19 Investigations of the Mixed Mode Crack Growth Behavior of an Aluminum Alloy

    Husaini, Kikuo Kishimoto, Munetsugu Hanji and

    Mitsuo Notomi

    28 Base aspect ratio effects on resonant fluid sloshing in a rectangular tank

    Nima Vaziri and Ming-Jyh Chern

    15.45 - 16.00

    147 Morphology of crown tube Cr-Ni Austenitic

    Stainless Steel HTF failure

    Helena Carolina Kis Agustin, Ika Dewi Wijayanti and Rakhmat Satrio Wibowo

    99 Numerical Study of Flow characteris tics around an I-

    type cylinder 53o near a plane wall

    Yuwono Tri Yogi, Ahmad Tohir and Purwanto Purwanto

    16.00 - 16.15

    192

    Effect of volume fraction epoxy-hollow glass microspheres and curing temperature variation on

    compressive properties of composites Sutikno None, Wajan Berata, Wahyu Wijanarko

    and Indra Sidharta

    90

    Numerical Simulation of vortex-induced vibration using OpenFOAM

    Mohamed Sukri Mat Ali, Mohamad Hafiz Ismail,

    Nurshafinaz Mohd Maruai, Sheikh Ahmad Zaki Shaikh Salim and Sallehuddin Muhamad

    16.15 - 16.30

    146 Experimental Study Of The Influence Of Quenching And Parti tioning Temperature Variation On

    Retained Austenite Fraction In AISI 4140 Steel

    Wahyu Wijanarko, Wajan Berata, Sutikno and Indra Sidharta

    59 Numerical Modeling of Vortex-induced Vibration in Turbulent Flow

    Ming-Jyh Chern, Kamau King'Ora, Giri Nugroho, Dedy Zulhidayat Noor and Tzyy-Leng Horng

    16.30 - 16.45

    112

    Experimental Study of Electrode Selection Effects on Mechanical Properties of Underwater Wet

    Welded-Joints Nur Syahroni, Imam Rochani and Harfian Nizar

    116

    Characteris tics of Decompression Tank Internally Pressurized With Water Using OpenFOAM

    Syamsuri

    16.45 - 17.00

    2 Aging behavior in Co-Cr-Mo-C alloys

    Alfirano Alfirano, Anistasia Milandia and Suryana

    Suryana

    181 A CFD Analysis of the Viscous Fluid Behavior of

    Glycerin in Various of Sti rring Patterns Retno Wulandari, I.N.G. Wardana, Slamet Wahyudi

    and Nurkholis Hamidi

    17.00 - 17.15

    4

    The Production Study of Bipolar Plate From Cuprum-Carbon Nanocomposite in Polypropylene Matrix (PP) for the Fuel Cell Application

    Muhammad Fitrullah, A.Herman Yuwono and Sari

    Katili

    232

    Characteris tics Of Two Phase Fluid Flow In Pipe Bends

    Slamet Wahyudi, Sudjito Soeparman, Rudy Soenoko

    and Arief Yunizar R

  • The 2nd International Conference on Mechanical Engineering | 19

    Thursday, 3 September 2015 Parallel session 2: 15.15 - 17.15

    Room C Room D

    Mechanical Design, Structure, Vibration Manufacturing

    Chair: Harus Laksana Guntur Chair: Suhardjono

    15.15 - 15.30

    63 Response Reduction of Two DOF Shear Structure

    Using TMD and TLCD by Considering Absorber Space Limit and Fluid Motion

    Lovely Son, Mulyadi Bur and Meifal Rusli

    13 Improving the Injection Molding of Small Optical

    Elements by Integrating Reverse Engineering and Mold Flow Analysis

    Jiing-Yih Lai, Yao-Yu Wen and Chin-Hao Liu

    15.30 - 15.45

    23

    Anchor Strength Analysis for Mooring of a Floating Breakwater In Senoro Field, Central Sulawesi

    Kriyo Sambodho, Yeyes Mulyadi, M Arif Wicaksono and Muhammad Zikra

    124

    Evaluation of Delay Factors in Jacket Structure Project

    Silvianita Silvianita, Andika Trisna Putra, Daniel M Rosyid, Dirta Marina Chamelia Chamelia and Imam

    Rochani

    15.45 - 16.00

    183 Mechanical analysis of the prosthetic knee in

    flexion

    Daniel Castillo Brito, Olga Ramos Sandoval and Dario Amaya Hurtado

    189 Injection Molding Process Simulation of Tensile

    Strength and Impact Specimen Test

    Dinny Harnany, Arif Wahjudi, I Made Londen Batan and Irma Mappease

    16.00 - 16.15

    86

    Finite element analysis of asymmetric stent for treatment of eccentric plaque

    Achmad Syaifudin, Ryo Takeda and Katsuhiko Sasaki

    64

    Small Business Simulation

    Dulat Shukayev, Aggey Semenov , Zhanar Lamasheva and Ainur Abdikadyrova Abdulllahnovna

    16.15 - 16.30

    96 An Improved Energy Based Load-Displacement

    Prediction for Slotted Disc Spring Noor Fawazi and Jung-Youn Lee

    133 An Innovative Concept to Improve the Muffler

    Performance Using Automated Mechanical Iris Mohammad Ahsan Habib, Ahmad Syed Anwar and

    Md. Anayet U. Patwari

    16.30 - 16.45

    164

    Influence of Spring Ratio on Variable Sti ffness and Damping Suspension System Performance

    Unggul Wasiwitono, Agus Sigit Pramono,

    I Nyoman Sutantra and Yunarko Triwinarno

    138

    The Effect of Welding Current and Welding Time to Nugget Zone and Tensile Properties of Micro Resis tance Spot Welded Thin Aluminum A1100

    Ario Sunar Baskoro, Hakam Muzakki and Winarto

    Winarto

    16.45 - 17.00

    22 Design And Modelling Fender System For Condensate And Sulphuric Acid Jetty At Senoro Field, Central Sulawesi

    Muhammad Zikra, Kriyo Sambodho, Teuku Abdul Manan Syahputra and Yeyes Mulyadi

    177 Optimization of Cable Ties Injection Molding Process Using Back Propagation Neural Network and Genetic Algori thm (BPNN-GA)

    Arif Wahjudi, Bobby Oedy Pramoedyo Soepangkat and Yang Fitri Arriyani

    17.00 - 17.15

    225 Modeling of a Shell Eco-marathon vehicle based on

    drive-train characteris tic and driver modes to predict fuel consumption of the vehicle on a specific track.

    Witantyo Witantyo, Sutikno Sutikno, Diva Aulia

    and Habibie Rahman

    157 Anti -plane Interaction of a Coated Circular Inclusion

    with a Crack Located in Matrix

    Alief Wikarta

  • The 2nd International Conference on Mechanical Engineering | 20

    Friday, September 4, 2015 Parallel session 3: 08.30 - 10.00

    Room A Room B Material and Metallurgy Energy, Heat Transfer and Fluid Flow

    Chair: Nur Syahroni Chair: Triyogi Yuwono

    08.30 - 08.45

    131 Effect of Hydrogen Addition on the characteris tics of ni trided Martensi tic Stainless Steel AISI 420

    Istiroyah, I.N.G Wardana and D.J Santjojo

    5 Effect of Impeller Condition on Blower Performance, Case Study : Impeller of K-2201 in PT. Pertamina RU

    III Hafid Budiman

    08.45 - 09.00

    163

    Effect of Composition on the Microporosi ty, Microstructure, and Macrostructure in the Start-

    Up Direct-Chill Casting Billet of Al-Cu Alloys

    S. Suyitno

    91

    Bottom Shear Stress and Bed Load Sediment Transport Due to Irregular Wave Motion

    Suntoyo ., A Haris Fattah, Muhammad Yunan Fahmi, Taufiqur Rachman and Hitoshi Tanaka

    09.00 - 09.15

    182 Metallography Investigation of Dry Corrosion Boiler Tube

    Arif Hariyadi, Helena Carolina Kis Agustin and Ika Dewi Wijayanti

    215 Design of NACA 4415 Taperless Twistless Wind Turbine Blade Using Twist Optimization for Indonesia

    Wind Characteris tics

    Felly Rihlat Gibran, Mohamad Safhire and Ahmad Dien Warits

    09.15 - 09.30

    208 Effects of Deformation and Annealing Temperature on the Microstructures and Mechanical Properties

    of Cu-32%Zn Brass

    Bondan Tiara Sofyan and Imam Basori

    44 Rheology Margarine On Non-Newtonian Fluid Proving Through Small Gap

    Agus Harijono, I.N.G Wardana, Nurkholis Hamidi and Denny Widhiyanuriyawan

    09.30 - 09.45

    140 The Use Of Magnetic Flux To The Welding Of Hot

    Roll Quench Tempered Steel

    Sugiarto Sugiarto, Anindito Purnowidodo, Rudy Soenoko, Yudy Surya Irawan and A. As'Ad Sodief

    42 Numerical Investigation of Dynamic Stall Behavior on

    Single Bladed Darrieus Turbine Airfoil Section

    Go Hutomo, Galih Bangga and Herman Sasongko

    09.45 - 10.00

    171 Effect of Variation of Temperature and Electrolyte Solution Concentration to the Corrosion Resis tance

    of AISI 304, AISI 316, and Copper in Water Electrolysis Apparatus

    Ida Hamidah, Agus Solehudin and Agus Setiawan

    233 Experimental Study of the Cross flow Turbine

    Djoko Sutikno, Sudjito Soeparman, Rudy Soenoko and

    Slamet Wahyudi

  • The 2nd International Conference on Mechanical Engineering | 21

    Friday, September 4, 2015 Parallel session 3: 08.30 - 10.00

    Room C Room D Mechanical Design, Structure, Vibration Mechatronics and Control System

    Chair: Unggul Wasiwitono Chair: Bobby Oedy P. Soepangkat

    08.30 - 08.45

    193 Study the effects of adjustment of highest and lowest SOC allowed in battery on fuel

    consumption and emission of series hybrid vehicle using ADVISOR Rendy Rachmanto, I Nyoman Sutantra, Bambang

    Sudarmanta and Unggul Wasiwitono

    114 Reconfiguration of modular robotic system MECABOT

    Ricardo Andrs Castillo Estepa, Oscar Fernando

    Avils Sanchez, Oscar Gerardo Rubiano Montaa and Germn Andrs Vargas Torres

    08.45 - 09.00

    179 Simulation Of Two Segments Crash Box Subjected To Frontal Load

    Moch. Agus Choiron and Sudjito

    122 Dimensionally Homogeneous Jacobian and Conditioning Number

    Latifah Nurahmi and Stphane Caro

    09.00 - 09.15

    98 Experimental Study And Analysis Of The Generated

    Electric Power of Salter Duck Type-Ocean Wave Energy Harvester (OWEH) Due To Additional Weight Change and Wave Amplitude

    Wiwiek Hendrowati and Harus Laksana Guntur

    145 Navigation and Guidance Control System of AUV

    with Tra jectory Estimation of Linear Modelling

    Teguh Herlambang, Eko Budi Djatmiko and Hendro Nurhadi

    09.15 - 09.30

    18

    Analysis of Wave Climate Variations based on ERA-Interim Reanalysis Data from 1980 to 2014 to

    Support Wave Energy Assessment in Indonesia

    Muhammad Zikra, Putika Ashfar and Mukhtasor

    151

    Hardware-In-The-Loop Simulation and Digi tal Control of Double Inverted Pendulum

    Germn Buitrago Salazar, Dario Amaya Hurtado and Olga Lucia Ramos Sandoval.

    09.30 - 09.45

    160 Simplici ty Design Of Hybrid Energy Of Marine Current And Offshore Wind Energy Plant In

    Indonesia Mahmud Mustain and Arief Suroso

    178 Inverse Kinematics Modelling and Simulation for Upper Case Writing Robot Control using ANFIS

    Adlina Taufik Syamlan, Bambang Pramujati and Hendro Nurhadi

    09.45 - 10.00

    221 Type Synthesis of Two DOF Hybrid Translational

    Parallel Manipulators

    Latifah Nurahmi, Stephane Caro and Sebastien Briot

  • The 2nd International Conference on Mechanical Engineering | 22

    Friday, September 4, 2015 Parallel session 4: 10.15 - 11.30

    Room A Room B Energy, Heat Transfer and Fluid Flow Energy, Heat Transfer and Fluid Flow

    Chair: Syamsuri Chair: Prabowo

    10.15 - 10.30

    173 Analysis of Turbulence Characteris tics in the

    Laminar Sub-Layer Region of a Perturbed Turbulent Boundary Layer

    Sutardi Sutardi and Wawan Aries Widodo

    216 Numerical Studies Of The Influence Of Tube Bank

    Configuration In A Staggered Arrangement Of Tubes To Heat Transfer And Flow Characteristics Of Fluid

    Ary Bachtiar Krishna Putra, Nina Yunindra and Dina

    Yuanita

    10.30 - 10.45

    121 CFD Simulation of Plasma Leakage and Fluid Flow on the Dengue Virus - Infected Endothelial Cells

    Nur Kaliwantoro, Marsetyawan Hne Soesatyo, Indarto, Mohammad Juffrie, Rini Dharmastiti,

    Mohammad Tauviqurrahman and Zainal Arifin

    135 Test Equipment Design of Thermosyphon Effects On Passive Solar Water Heating System

    Ni Ketut Caturwati, Ipick Setiawan, Alief Riptian and Aufar

    10.45 - 11.00

    158

    Model of Ground Water Elevation around Mud Reservoar in Coastal Area of Porong Sidoarjo

    Mahmud Mustain

    162

    Experimental Study of Heat Transfer Characteris tics of Solar Water Heater Collector with Addition Wavy Fins on Pipe

    Masykur Masykur and Bambang Arip Dwiyantoro

    11.00 - 11.15

    81 Numerical simulation of cross-flow around four ci rcular cylinders in-line square configuration near a plane wall

    A. Grummy Wailanduw, Triyogi Yuwono and

    Wawan Aries Widodo

    172 The Role of Heterogeneous Nucleation in Water Based Phase Change Material for Medium Temperature Refrigeration

    I Made Rasta - and Ing. Wardana -

    11.15 - 11.30

    219

    CFD based investigations into optimization of di ffuser angle on rear bus body

    Wawan Aries Widodo and Mutiara Nuril Karohmah

  • The 2nd International Conference on Mechanical Engineering | 23

    Friday, September 4, 2015 Parallel session 4: 10.15 - 11.30

    Room C Room D Energy / Design Manufacturing

    Chair: Nurkholis Hamidi Chair: I Made Londen Batan

    10.15 - 10.30

    93 Design And Modelling Pile Breakwater For LNG

    Jetty At Senoro Field, Central Sulawesi

    Kriyo Sambodho, Muhammad Zikra, Muhammad Aldhiansyah Rifqi Fauzi and Yeyes Mulyadi

    142 Optimization of Multiple Performance

    Characteris tics in EDM Process of HPM 38 Steel Using Response Surface Methodology and Non-Linear Programming

    Amirul Akbar, Bobby O. P. Soepangkat and Arif Wahjudi

    10.30 - 10.45

    228 Performance Modeling of A Wave Energy Converter: Pembangkit Lis trik Tenaga Gelombang

    Laut Sis tem Bandulan (PLTGL-SB)

    Mukhtasor, Rudi W. Prastianto, Irfan S Arief, Harus L Guntur, Mauludiyah and Hadi Setiyawan

    132 A Waste Relationship Matrix Model for Better Green Lean Product in Water Processing

    Mastiadi Tamjidillah, Pratikto, Purnomo Budi Santoso and Sugiono

    10.45 - 11.00

    3 Strategy in reducing the pace of the greenhouse gas emission from the electrici ty sector in

    Southeast Sulawesi

    Mustarum Musaruddin, Aditya Rachman,

    Muhammad Hasbi and Akbar Kurdin

    176 Multiple-Performance Optimization Of Drilling Parameters And Tool Geometry In Drilling GFRP

    Composite Stacks Using Taguchi And Grey Relational Analysis (GRA) Method

    Gallih B. Wicaksono, Bobby O. P. Soepangkat and

    Iwan Krisnanto

    11.00 - 11.15

    113

    Calculation of Potential Wind Power in Indonesia by Using High Alti tude Wind Energy method

    Desmas Arifianto Patriawan and Lusia Permata

    Sari Hartanti

    200

    Tempering Process Gradually to Improve Quality Tool

    Raden Edy Purwanto, Agus Sujatmiko and Moh

    Hartono

    11.15 - 11.30

    109 Feasibility Analyses of Grid/Wind/PV Hybrid

    Systems for Industrial Application

    Wayan G. Santika, Sudirman and I Nyoman Suamir

    187 Multi Response Optimization Using Taguchi -Grey-

    Fuzzy Method In Drilling Of Kevlar Fiber Reinforced Polymer (KFRP) Stacked

    Am Mufarrih, Bobby Soepangkat and Iwan Kristanto

  • The 2nd International Conference on Mechanical Engineering | 24

    Friday, September 4, 2015 Parallel session 5: 13.30 - 15.00

    Room A Room B Material and Metallurgy Energy, Heat Transfer and Fluid Flow

    Chair: Suwarno Chair: Budi Utomo K. Widodo

    13.30 - 13.45

    25 Effect of Low Temperature Sintering on the Porosi ty and Microstructure of Porous Zeoli te Ceramic

    Sri Mulyo Bondan Respati, Rudy Soenoko, Yudy Surya Irawan and Wahyono Suprapto

    14 Cooling Load Estimation to Determine the Proper Capaci ty of Air Conditioners in the Engineering Building at Engineering Academy of Soroako

    Mukhlis A. Hamarung, Harman - and Jasman -

    13.45 - 14.00

    106 Electrochemical Performances Of Li fepo4/C As

    Cathode For Aqueous Electrolyte Lithium-Ion Battery

    Lukman Noerochim, Ade Okta Yurwendra and Diah

    Susanti

    108 The variety of furni ture arrangement inside

    apartment unit around Jabodetabek area to improve COPc

    Bambang Iskandriawan

    14.00 - 14.15

    33 Synthesis of BiFeO3 Nanoparticle and Single Phase

    by Sol -Gel Process for Multiferroic Material

    Dwita Suastiyanti and Marlin Wijaya

    196 CFD analysis on thermal comfort and indoor ai r

    quality affected by parti tions in ai r-conditioned building

    Pradip Aryal and Thananchai Leephakpreeda

    14.15 - 14.30

    150 Biomechanical Analysis of the Spider Thread for the

    Reconstruction of the Anterior Cruciate Ligament Reconstruction

    Luis Ruiz Crdenas, Olga Ramos and Dario

    Amaya Hurtado

    47 Analysis Of Effect Of Sub Cooling Performance Of

    Vapour Compression Refrigeration System With Cooling Load Variation

    Prayudi Suparmin and Roswati Nurhasanah

    14.30 - 14.45

    11 Strength Analysis of ZnO-Al2O3 Nanocomposite for

    Implant Material Innovation

    Poppy Puspitasari and Andoko Andoko

    148 Performance Improvement Using Subcooling on

    Freezer Using R22 and R290 as Refrigerants for Various Ambient Temperatures

    Cecep Sunardi, Luga Martin, Kasni Sumeru and Henry

    Nasution

    14.45 - 15.00

    107

    Effect Of Carbon Coating On Electrochemical Performance Li ti 2(Po4)3 For Anode Of Aqueous Electrolyte Li thium Ion Battery

    Lukman Noerochim, Zeddy Argasani and Diah Susanti

    75

    Numerical investigation on ejector as an expansion device using R290 as refrigerant in residential air conditioner for various cooling capaci ty

    Aries Prih Haryono, Kasni Sumeru, Azhar Abdul Aziz and Henry Nasution

  • The 2nd International Conference on Mechanical Engineering | 25

    Friday, September 4, 2015 Parallel session 5: 13.30 - 15.00

    Room C Room D Energy, Heat Transfer and Fluid Flow Manufacturing

    Chair: Wawan Aries Widodo Chair: Bambang Pramujati

    13.30 - 13.45

    128 Improvement of Savonius Blade to Overcome Dead band of Hybrid VAWT Savonius-Darrieus for New and Renewable Energy Cluster for Tropical Country

    Erwin Erwin, Anggit Srikuncoro, Tresna Soemardi, Erny Listijorini, Rina Lusiani and Yus Rama Denny

    191 The Effects of Pulse On Time and Arc On Time on Surface Quality and Wire Wear Ratio in Wire -EDM of ASSAB XW-42 and ASSAB 8407 2M

    Hasriadi -, Bobby Soepangkat and Hari Subiyanto

    13.45 - 14.00

    58 A Couple of Savonius Wind Mill and Centrifugal

    Reaction Pump as A Wind Energy Water Pump System

    Y B Lukiyanto

    205 Modeling of Well Service and Workover Scheduling

    to Optimize Oil Well Maintenance

    Sudiyono Kromodihardjo and Ergo Kromodihardjo

    14.00 - 14.15

    143 Structural Design Optimization of Vertical Axis Wind Turbine Type Darrieus-Savonius

    Bambang A. Dwiyantoro, Triyogi Yuwono and Vivien Suphandani

    194 Optimization Of Multi Response Using Taguchi Grey-Fuzzy End Milling Process Material Assab Xw-42 With

    Cooling Liquid Nitrogen

    Dian Ridlo Pamuji, Bobby Soepangkat and Winarto

    14.15 - 14.30

    170 Simulation Savonius Wind Turbine with Multi-

    Deflector

    Budi Sugiharto, Sudjito Soeparman, Denny Widhiyanuriyawan and Slamet Wahyudi

    202 Groove Overhang Effect on Surface Roughness on

    CNC Vertical Milling Process

    Agus Sujatmiko, Mohamad Hartono and Raden Edy Purwanto

    14.30 - 14.45

    144 The Dynamic Characteris tics of Vertical Axis Wind Turbine Type H

    Bambang A. Dwiyantoro

    195 Optimization of Multiple Performance Characteris tics in the WEDM Process of Buderus

    2379 ISO-B Tool Steel Using Taguchi -Grey-Fuzzy Logic Method

    Mega Diantoro and Bobby Soepangkat

    14.45 - 15.00

    218 Investigation Of Factors Affecting Power Curve

    Wind Turbine Blade

    I Kade Wiratama, I Made Mara and I Made Nuarsa

    224 Simulation Of Ironing Process For Bullet Case To Get

    Minimum Forming Force With Variation Of Die Angle And Reduction Wall Thickness

    M.Nushron Ali Mukhtar, I Made Londen Batan,

    Bambang Pramujati and Agus Sigit Pramono

  • The 2nd International Conference on Mechanical Engineering | 26

    Friday, September 4, 2015 Parallel session 6: 15.15 - 17.00

    Room A Room B Material and Metallurgy Energy, Heat Transfer and Fluid Flow

    Chair: Lukman Noerochim Chair: Ary Bachtiar KP.

    15.15 - 15.30

    12 Effect Of Temperature And Time Of Two-Step Austempering Method On Mechanical Properties

    For Nodular Cast Iron Andoko Andoko and Poppy Puspitasari

    201 Numerical s tudy of mixed convection around a heated ci rcular cylinder

    Vivien S. Djanali, Ahmad Nurdian Syah and Syaiful Rizal

    15.30 - 15.45

    199

    Effect of adhesive layer thickness on the shear s trength of adhesively bonded s teel joints in wet environment Sugiman Sugiman, Ilham Akbar, Emmy Dyah Sulistyowati and Paryanto Dwi Setyawan

    104

    Convective Regimes on Porous Media within Sudden Changed Channel Due to Tangential Gas Flow Eko Siswanto, Angga Veriyawan Rahana, Mochammad Agus Choiron, Nagata Ryuichi, Katsurayama Hiroshi and Katoh Yasuo

    15.45 - 16.00

    214 Effect of Fillers Content on Mechanical Strength and Failure Mode of Aluminium Bonded with

    Epoxy-Based Adhesive Khairul Anam, Anindito Purnowidodo and Dharu Smaradhana

    55 Predicting Temperature Profile and Temperature His tory for Varied Parameters of a Welding Process

    Using Rosenthals Approach for Semi-infini te Solid Djarot B. Darmadi

    16.00 - 16.15

    20 Effects of Ci tric Acid/BaTiO3 Weight Fractions and Time of Sintering in Sol Gel Process on Electric Saturation Polarization Values and Phase Composition Dwita Suastiyanti and Marlin Wijaya

    56 Extraction of Essential Oils from Patchouli Plant Using Advanced Techniques of Microwave - Assisted Hydrodis tillation Nurkholis Hamidi

    16.15 - 16.30

    117 Effect Of Dromus Oil Amount In Cooling Media Against Tensile Strength And Microstructure

    Results Of St 60 Steel Due To Hardening Tempering Process Poppy Puspitasari, Dewi Puspitasari, Novi Fairuz Aishoni, Muhammad Ilman Nur Sasongko, Wahyu Candra and Suci Trisna Wati

    60 The Utilization Of Paraffin And Beeswax As Heat Energy Storage In Infant Incubator

    Sekar Sinaringati, Nandy Putra, Muhammad Amin and Fitri Afriyanti

    16.30 - 16.45

    37 Friction Sti r Welding On Corner Joint With New Surface Preparation Design Widia Setiawan and Djarot B. Darmadi

    230 Efficiency of Household Gas Stove by Optimizing Gap of Pan and Stove Cover Agung Sugeng Widodo

    16.45 - 17.00

    211 Effect of The Use of Gas Argon-Nitrogen on The Balance of Microstructure in Welding Super Duplex Stainless Steel Su Suheni

    92 Design Concept of Small Long-Li fe PWR Using Thorium Fuel Moh. Nurul Subkhi, Zaki Su'Ud, Abdul Waris and Sidik Permana

  • The 2nd International Conference on Mechanical Engineering | 27

    Friday, September 4, 2015 Parallel session 6: 15.15 - 17.00

    Room C Room D Energy, Heat Transfer and Fluid Flow Manufacturing

    Chair: Bambang Sudarmanta Chair: Sudiyono Kromodihardjo

    15.15 - 15.30

    139 The Effect of Pretreatment and Variety of Microorganisms to the Production of Ethanol from

    Coffee Pulp Tri Widjaja, Ali Altway, Siti Nurkhamidah, Luluk Edahwati, Fibrillian Zata Lini, and Fixalis Oktafia.

    231 Modelling and Simulation Analysis of Solenoid Valve for Spring Constant Influence to Dynamic Response

    Masruki Kabib, Bambang Pramujati, I Made Londen Batan and Agus Sigit Pramono

    15.30 - 15.45

    165

    Degradation Of Gliycerol With Sonication Method: The influence of the addition of a heterogeneous catalyst Ruslan Kalla, S Sumarno and M Mahfud

    85

    A Comparison Process of 3D Model Quali ty Using 3D Laser Scanning Triangulation Method Sally Cahyati, Mark Budiman and Fadhli Umar Lubis

    15.45 - 16.00

    185 The Effect of Nitrogen Stress in Medium for

    Increasing Carbohydrate as A Bioetanol Source and Carotenoid as An Antioxidant from Chlorella Zofingiensis Culture

    Eko Agus Suyono, Umi Muavatun, Faridatul Husna, Husnul Khotimah, Ika Pratiwi, Rahmah Husna, Fitri Cahyani, Yuni Purwanti and Thoriq Teja Samudra

    229 Optimization of Multiple Performance

    Characteris tics in Wire Electrical Discharge Machining (WEDM) Process of Buderus 2080 Tool Steel Using Taguchi-Grey-Fuzzy Method

    Dhika Aditya Purnomo, Bobby O. P. Soepangkat and Helena Carolina Kis Agustin

    16.00 - 16.15

    186

    Effect of Rumen Fluid Microorganism and Effective Microorganism on Biogas Production from Rice Straw Waste Tri Widjaja, Ali Altway, Setiyo Gunawan and Noviyanto.

    223

    A Review Paper on Product Surface Defect Detection of Ironing Process Akhmad Faizin, Arif Wahjudi, I Made Londen Batan and Agus Sigit Pramono

    16.15 - 16.30

    136 Study Of Composition Of Water Fuel Emulsion By Taguchi Experimental Method

    Agung Sudrajad, Ipick Setiawan, and Achmad Faisal.

    155 Parametric Optimization Of Wire Electrical Discharge Machining Process On Aisi H13 Tool Steel Using Weighted Principal Component Analysis (Wpca) And

    Taguchi Method Nuraini Lusi, Khairul Muzaka and Bobby Oedy Pramoedyo Soepangkat

    16.30 - 16.45

    53

    The Calori fic Values of Solid and Liquid Yields Consequenced by Temperatures of Mahogany Pyrolsis Widya Wijayanti and Mega Nur Sasongko

    129

    The Influence of Binder Variation Using Eruption Kelud Sand Against Sand Mold Strength, Quality and Fluidity Results on Al-Si Metal Casting Deby Yangin Drajat, Dewi Puspitasari, Zaim Zarkasi, Muhammad Ilman Nur Sasongko, Rudi Anggoro

    Kurniawan, Poppy Puspitasari, Putut Murdanto and Tuwoso Tuwoso

    16.45 - 17.00

    48 The Effect of CO2 Fraction on the Flame Stability of Biogas Premixed Flame Mega Nur Sasongko and Widya Wijayanti

    188 Optimization Of Multi Response Using Taghuci -Grey-Fuzzy In Cryogenic Face Milling Material ASSAB XW42 Mohammad Wahid, Bobby Soepangkat and Bambang Pramujati

  • The 2nd International Conference on Mechanical Engineering | 28

    Energy, Heat Transfer and Fluid Flow

  • The 2nd International Conference on Mechanical Engineering | 29

    Engine test stand layout and post processing tools for the detection

    of many engine performance parameters

    Marco Bietresato 1, Massimiliano Renzi1, Simone Mischiatti1 and Fabrizio Mazzet to1

    1Free University of Bozen-Bolzano, Faculty of Science and Technology Fa.S.T., Piazza Universit 5, I-39100 Bolzano (BZ), Italy

    E-Mail: [email protected]

    ABSTRACT An eddy-current brake, capable of measuring the torque and the power of internal

    combustion engines at desired rotational speeds, has been fully interfaced with an external NI cDAQ

    9178 data logger. Thanks to this system, it is possible to collect and synchronize the data coming from the

    test stand and from several other sensors equipping the motors under test: a load cell used in a chrono-

    gravimetric fuel consumption system, many thermocouples, a lambda probe, an exhaust gas analyser. To

    have a better control of the position of the accelerator leverage during the trials (hence a higher

    repeatability), a control system, based on an Arduino board, directly acts on the throttling valve through a

    servomotor. Then, a series of software tools allows the interfacing of the various devices and the

    automatic post-processing of the acquired data (filtering of signals, recognition of data corresponding to

    the single engine speeds, time-averaging). The described testing equipment and the implemented

    procedures allow investigating both the whole operating performance of a motor (i.e., at different engine

    speeds and loads) and a single parameters value, in particular: the torque, the power, the fuel

    consumption of the motor, the composition (up to nine different gases) and the temperature of the

    exhausts, the temperature of the engine head and of the cylinder block, the combustion quality and many

    other additional parameters describing the engine performance. This test stand with the described post

    processing procedures will be used in future works to evaluate the performance of traditional and

    alternative-fuelled internal combustion engines for both agricultural and co-generative applications.

    Keywords : engine test stand, agricultural engines, engine performance detection

  • The 2nd International Conference on Mechanical Engineering | 30

    Flame Stability Measurement on Rectangular Slot Meso-scale

    Combustor

    Satworo Adiwidodo1, a , I.N.G. Wardana2, b , Lilis Yuliati3, c , Mega Nursa Songko4, d

    1State Polytechnic of Malang, J l. Soekarno-Hatta No. 9, Malang 65141, Indonesia

    2, 3, 4Brawi jaya University, J l. MT. Haryono No. 165, Malang 65145, Indonesia

    [email protected], [email protected], c lil [email protected], [email protected]

    Abstract The biggest problem of combustion in the micro-scale or meso-scale combustor is heat loss.

    Heat loss led to a difficult of stable flame. This research aims to elucidate the flame stabilization and

    flammability limit of LPG-oxygen premixed flame, temperature distribution and flame visualization.

    Flame stabilization and flammability limit map are shows in - U plane. The result shows that there are

    six regions in the map that is stable without noise, stable with noise, transition zone, dead zone, pseudo

    stable, and blow off. Measurement parameters are LPG-oxygen flow velocity at various equivalent ratio

    and temperature. The flame stabilization and flammability limit map within measurement parameters are

    discussed.

    Keywords : flame stabilization, flammability limit, meso-scale combustor, rectangular slot, premixed

    flame.

  • The 2nd International Conference on Mechanical Engineering | 31

    The Effect of Nitrogen on Flame Characteristics in Biogas External

    Premixed Combustion

    Willyanto Anggono1,a, Fandi D wiputra Suprianto2, Kenny Purnomo3, Tan Ivan Hartanto4 and Tubagus P. Wijaya5

    1,2,3,4,5Mechanical Engineering Department, Petra Christian Unive rsity, Surabaya, Indonesia

    Email : [email protected]

    .

    Abstract Biogas contains more than 50% methane (CH4), is a renewable and eco-friendly fuel

    produced by bacterial action. Not only is biogas flammable but it also contains inhibitors like carbon

    dioxide and nitrogen, as well as small amounts of H2, O2, H2S and others. Several associated studies

    have been conducted in order to examine biogas combustion characteristics in external combustion and

    flame angle, flame height and dimensionless flame height are the important characteristics in external

    premixed combustion. This researchs aims were to discover the influences of N2 as it is the second most

    prevalent inhibitor in biogas by burning stoichiometric fuel mixtures (CH4 and N2 (0%-50% of fuel)) and

    oxygen in an experimental external premixed combustion burner whose nozzle tip diameter was 5 mm.

    The burner was connected to a hose from the oxygen tank and another hose from the fuel tank. Two

    regulators and flowmeters were placed on each tank to monitor the flow supplied to the mixer and burner.

    The valves were used to stop or open the fluid supply. The outcome flame propagation is then recorded

    by a high speed camera and then processed through a computer system. The results indicate that N2

    influenced the flame angle, flame height and dimensionless flame height. The higher the N2 content

    inside the fuel, the shorter the flame height and the lower the dimensionless flame height. Moreover, increasing the N2 content created larger the flame angle.

    Keywords: Biogas, nitrogen, external combustion, sustainable energy, flame characteristics

  • The 2nd International Conference on Mechanical Engineering | 32

    Waste Fish Oil Biodiesel Production and Its Performace in Diesel

    Engine

    Kusmiyati1, Triana Retno Pratiwi2, and Tri Wulandari3

    1, 2 , 3Renewable Energy Research Centre (PSEA) Department of Chemical Engineering Faculty of Engineering, Univ ersitas Muhammadiyah Surakarta

    J l. A. Yani Tromol Pos 1 PabelanKartasura 57102 Phone (0271)717417

    E-mail: [email protected], psea_ums2014@yahoo .com

    ABSTRACT Waste Fish oil was used as raw material for biodiesel production. Two stages processe,

    esterification and transesterification were applied to convert waste fish oil to biodiesel. An acid catalyst

    (H2SO4) and alkaline catalyst were used for catalysts of the esterification and transesterification,

    respectively. Fish oil, methanol or ethanol, and catalyst were reacted in a three-neck flask at temperature

    at 60 C and time of 2 h. The effect of alcohol types on biodiesel conversion showed that the optimum

    condition (conversion of 66.09%) was obtained using methanol. The density, kinematic viscosity, heating

    value of fish oil biodiesel were 0.8822 g/mL, 4.741 mm2/s. 9713 cal/g, respectively. The biodiesel was

    tested on diesel engines to determine the engine torque, power and Brake Specific Fuel Consumption as

    compared to diesel oil. At lower speed engine of 1200-1400 rpm, the engine torque of waste fish oil

    biodiesel and diesel oil was higher than that at higher speed engine of 1400-1500 rpm. Blendings of waste

    fish oil had higher engine torque than that of diesel oil. Blends fuel of waste fish oil biodiesel had higher

    power engine as compared to that of diesel oil fuel at speed of 1200-1500 rpm. Blends waste fish oil biodiesel had lower BSFC (Brake Specific Fuel Consumption) as compared to that of pure diesel oil.

    Keywords : biodiesel; waste fish oil; esterification; transesterification; diesel engine performance.

  • The 2nd International Conference on Mechanical Engineering | 33

    Influence of the compression ratio and injection timing on Sinjai

    Engine Performance with 50% BioethanolGasoline blended fuel

    Bambang Sudarmanta1, a, Bambang Junipitoyo1, b, Ary Bachtiar Krisna Putra1, b, I. Nyoman Sutantra1, c

    1Fuels and Combustion Engineering Laboratory, Mechanical Engineering Department ITS Indonesia

    Email : [email protected], [email protected], [email protected], [email protected]

    Abstract Influence of the compression ratio and injection timing on Sinjai engine performance

    with 50% bioethanol-gasoline blended fuel were investigated on water brake dynamometer. The

    properties of bioethanol were measured based on American Society for Testing Materials

    (ASTM) standards. Fuel consumption was measured by the time of fuel consumption per 25 cc

    of fuel in a measuring glass where as combustion air consumption was measured using an air

    flow meter. The emission parameters, exhaust gas temperature and air fuel ratio were measured

    using STARGAS exhaust gas analyzer. The compression ratio was increased from 9,6, 10,6

    to11,6 dan timing injection retarded 120, 140, 160 to 180 BTDC. Engine performance testing

    conducted in a variable speed, starting the engine rev 2000 to 5000 rpm with intervals of an

    increase of 500 rpm. The engine performance parameters evaluated were torque, brake mean

    effective pressure, power, specific fuel consumption, thermal efficiency, exhaust gas

    composition and volumetric efficiency. The results showed that the increase of compression

    ratios improved engine performance for 50% bioethanol-gasoline blended fuel throughout all the

    speed range investigated, while the injection timing setting indicates that at 140 BTDC injection

    timing to produce the best engine performance. The use of 50% bioethanol-gasoline blended fuel

    has an octane number of 98 so it is more resistant to the effects of knocking. The increase in

    compression ratio up to 11.6 can improve performance up to 12%, whereas the setting at 140

    BTDC injection timing can improve performance up to 20%. While the emission CO and HC

    emissions decreased significantly as a result of the leaning effect caused by the bioethanol

    addition. In this study, it was found that using 50% bioetanol-gasoline blended fuel, would be

    reduced the CO and HC emissions until 28% and 22% Respectively.

    Keywords : SINJAI engine, bioethanol, gasoline, blended fuel, compression ratio, injection

    timing performance and emission.

  • The 2nd International Conference on Mechanical Engineering | 34

    Optimization of WaterScrubbingMethod for Enhancement of Biogas

    Quality through Base Solutions Addition

    Hendry Sakke Tira1, a, Yesung Allo Padang1, b,Tri Rachmanto1,cand Ahmad Alfan Syahida

    1

    1Mechanical Engineering Department, Engineering Faculty, Mataram University, Mataram NTB 83125, Indonesia

    Email : [email protected], [email protected], [email protected]

    Abstract The addition of base NaOH and KOH solutions and the application of an air stone

    and a stirrer to develop turbulence in water scrubbing method were carried out to study the

    purification process of raw biogas. Various concentrations of the base solutions a nd constant

    stirrer speed was applied. The work results showed that the best performance in increasing CH4

    content, about 70% improvement, was reached with the addition of NaOH on 2% concentration.

    On the other hand, about 96% and 100% improvement for CO2 and H2S respectively were

    obtained under 2% NaOH addition coupled with a stirrer. The addition of base solutions was

    very effective to increase absorbent pH level, thus maintaining absorption process in longer

    duration and prevented saturation of absorbent. Moreover, the application of a stirrer in packed

    bed column further improved the biogas quality. The improvement was resulted from the

    generated biogas bubble and turbulence which led to prolong contact time between absorbent

    and biogas

    Keywords: Biogas, base solution, purification, water scrubbing.

  • The 2nd International Conference on Mechanical Engineering | 35

    Experimental Study of Thermal Efficiency on Plate-Fin Solar Thermal

    Collector

    Tri Ayodha Ajiwiguna1, Tesla Hamonangan1 and Muhammad Ramdlan Kirom 1

    1Engineering Physics, Telkom University, Jalan Telekomunik asi Terusan Buah Batu, Bandung, Indonesia

    E-Mail: [email protected]

    ABSTRACT Plate- fin solar thermal collector with the dimension of plate 40 x 80 cm and 13

    fins is constructed and its performance is investigated. Ambient air is forced to flow through the

    solar collector by using fans. The measurements of incident solar radiation, input air

    temperature, output air temperature, and velocity of air flow are conducted simultaneously. Data

    from measurements are used to calculate heat absorbed by air flow and the efficiency of solar

    collector system. The results show that the increasing of air temperature is 14.3 oC, averaged

    heat power absorbed is 102.1 W, and the thermal efficiency is 49%.

    Keywords: Renewable Energy, Solar Thermal, Plat-fin collector, Thermal Efficiency

  • The 2nd International Conference on Mechanical Engineering | 36

    Effect of Number of Transfer Unit of Heat Exchangers on the System

    Performance of an Organic Rankine Cycle System

    Chien-Yuh YAN a, Alireza