Microsoft PowerPoint - AWG-KICK-OFF(YHLEE-15-8-24)Prof. LEE YOUNG-HO() Div. of Mechanical Engineering, College of Engineering
Korea Maritime & Ocean Univ.(KMOU)
Prof. LEE YOUNG-HO() Div. of Mechanical Engineering, College of Engineering
Korea Maritime & Ocean Univ.(KMOU)
l Pump Sump Hydraulic Model Test
l Micro Hydro turbines
l International Collaboration(Fiji, Nepal, Mongolia)
CONTENTS
TYPICAL PUMP STATION LAYOUT
• civil constructor(EPCs) : sump design • pump makers : pump supply • shop pump performance test condition is not similar with pump operation site

-Test Standard : ANSI/ASME-HI(Ver.2012), TSJ , Pump maker - Vortex Dynamics : turbulence, free-surface & submerged vortex - Swirl measurement, Bell throat velocity measurement - Anti-Vortex Device(AVD) design for civil construction by model test with CFD support
PUMP SUMP HYDRAULIC MODEL TEST

KOREA MARITIME AND OCEAN UNIVERSITY FLOW INFORMATICS LAB
• 9.8.7.3 Correlation of simulation and experimental results(2012 Ver.)
•There is a lack of generally available correlations of CFD simulations to experimental results for the complex flow patterns near pump intakes. •At the time this standard was prepared, correlations between calculated swirl intensities and free and submerged vortex types were not available. •Therefore, CFD shall not be used to predict flow patterns at the pump inlet or to show compliance with the acceptance criteria •Computational simulations may be possible in the future and the Hydraulic Institute may consider additional applications of CFD in future revisions of this standard.
CFD APPLICATION to HYDRAULIC MODEL TEST

Field test(50kW, Kwater)Shop test(50kW, company)
MICRO CROSS-FLOW HYDRO TURBINE(50KW) Government project(2006-2009, company + KMOU + Kwater)
Performance curve(5kW, KMOU)

KMOU CFD performance analysis
Schematic view of turbine Model test set-up(5kW, KMOU) Performance curve(5kW, KMOU)
Shop manufacturing (50kW, company)
Field test conditions(50kW, Kwater)
• Flow rate : 0.458 m3/s (1650 ton/h) • Effective head : 17m (1.7kgf/cm2) • Generator speed : 1800 rpm
MICRO TUBULAR HYDRO TURBINE(50KW) Government project(2006-2009, company + KMOU + Kwater)

Turbine No. No.1 No.2
Ave. generator output power [kW] 15.38 15.04
MICRO TUBULAR HYDRO TURBINE(15KW X 2) Industry Application(seaside fish farm discharge line at Jeju island, ~2012)

Passageway for output power transfer
Front runner blade
Rear runner blade

Design Spec. Diameter of Runner(m) 0.36
Design head(m) 4
Design rotating speed (rev/min)
Q(m3/s)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45

Pitch Circle Diameter[mm]
H[m], h[%]
MICRO TURGO HYDRO TURBINE (150KW) Government project(2011, company + KMOU)

MICRO TURGO HYDRO TURBINE (150KW) Government project(2011, company + KMOU)

Parameter Value Design Head 18 [m]
Design Discharge 0.5 [m3/s]
Design Power 70 [kW]
To rq
u e,
T /T
av g
rotation, degree
blade-7 blade-11
TRANSIENT ANALYSIS OF ROTOR-STATOR INTERACTION IN MICRO FRANCIS TURBINE (KMOU, 2010-2013)

PELAMIS(Attenuating, 1MW, UK) WAVE DRAGON(Overtopping, NETHERLAND)
OWC(Oscillating Water Column Type)
MICRO SAVONIUS HYDRO TURBINE FOR WAVE ENERGY Industry project(2009, company + KMOU)

SAVONIUS TURBINE DEVELOPMENT PROJECT (KMOU, 2009)
Savonius turbine model test in Japan
Savonius turbine in Caisson

MICRO SAVONIUS HYDRO TURBINE FOR WAVE ENERGY Industry project(2009, company + KMOU)
CFD domain Blade optimization

Guide nozzle front rear
MICRO CROSS-FLOW HYDRO WAVE TURBINE(FIXED) Government project(2006~2007, company + KMOU)

Rear water reservoir Wave gauge
3650750
250
MICRO CROSS-FLOW HYDRO WAVE TURBINE(FIXED) Government project(2006~2007, company + KMOU)

KOREA MARITIME AND OCEAN UNIVERSITY FLOW INFORMATICS LAB
Reciprocal flows in turbine passage optimization Free surface movement in CFD wave channel
Cross flow turbine 3-D rotationTurbine with large wave numerical 3-D channel
MICRO CROSS-FLOW HYDRO WAVE TURBINE(FIXED) Government project(2006~2007, company + KMOU)

Flow Flow
Turbine rotation due to wave height head difference(low head hydro turbine, KMU originality)
KMU wave model site test area(in 2014) Model test diagram(1kW), < 0.5m wave height
MICRO CROSS-FLOW HYDRO WAVE TURBINE(FLOATING) Government project(2011~2014, KMOU)

Data Logger
Wave height sensor DDT
Turbine
ADVANTAGES: - Compact : water working fluid compared to traditional OWC air turbine(big density difference) - Low acoustic noise due to low rpm, submersible <-> high-speed Well’s air turbine - No bio-fouling and no salty corrosion in turbine(clean fresh water as working fluid) - Dual hull structure : less collision leakage damage and better environmental protection
- Cross flow hydro turbine maybe the best choice but requires more systematic research in terms of off-shore floating device technology

CFD performance analysis6-DOF motion platform test
Dual hull floating body wave flow interaction Dual hull effective mooring mechanism
MICRO CROSS-FLOW HYDRO WAVE TURBINE(FLOATING) Government project(2011~present, KMOU)

Sea Test Site(10kW, 2014-)
KMOU-WAVESHIP § Installation Power : < 100KW § Total System Efficiency : max. 20%-25% § Wing Shape Incident Wave Energy Augment Design § ESS Considered § Commercialization R&D : 2015-2018(3 years)
KMOU test site

Circulating water channel
Water tight
Ø The purpose of this turbine is to conduct small scale experimental tests to analyze it's performance characteristics
Ø The turbine will be then scaled up to a size capable of producing 10kW in an submerged floating structure
Mooring & duct Counter-rotating turbine
RECENT R&D ON FLOATING MICRO TIDAL CURRENT TURBINE (KMOU, INHA UNIV., KOMERI, 2014~2016)

Power measurementRotating turbine in circulating water tank
Principle
CFD
animation

ESS TECHNOLOGY MATURITY & CURRENT STORAGE CAPACITY(IEA, 2014)

ESS(ENERGY STORAGE SYSTEM) BY POWER-USAGE TIME

PUMP TURBINE
H : Head by pumped air compression
POWER STATION

animation
pump
turbine
(2012~present, KMOU)
COMPRESSED AIR STORAGE STAGE(BY MULTI-STAGE PUMP)

COMPRESSED AIR EXPANSION STAGE(VIA HYDRO TURBINE)

animation
EFFECTIVE HEAD & FLOW RATE VS. TIME(PUMP STAGE) BY CFD(KMOU, 2011~present)

l KOICA Project(2009-2013, Univ. of South Pacific-KMOU)
- Amount : 3 Million US$
- Resource Measurement Equipment : wind mast, wave, tidal current
- Human resources capacity building(14 Pacific Islands)
l USP-KMOU Students Exchanges(2010-present)
l Turbine Testing Lab in KU
l 20kW Sand Erosion Proof Cross Flow Turbine Project(2013-2016)
INTERNATIONAL COLLABORATION(NEPAL, KATHMANDU UNIV.)
l Gobi Desert Supergrid Feasibility Study(2015, Korea)
INTERNATIONAL COLLABORATION(MONGOLIA)
Energies in Northeast Asia, Fraunhofer, 2014
Signing ceremony after 1st Int. Workshop on
Super Grid in North Asia, Ulaanbatar, June 25-
26, 2015
l 50MW wind farm in Gobi desert
l HVDC Transmission
Japan, North Korea
KOREA MARITIME AND OCEAN UNIVERSITY FLOW INFORMATICS LAB
l Pump Sump Model Hydraulic Test - Test standard modification for more cost effective & reliable test
Result, including CFD application
l Micro Hydro turbine R&Ds - Environmentally friendly hydropower Renewable Energy
l Hydro turbine to Ocean Energy Converter - Wave Energy, Tidal Current Energy, River Current Application
l Micro Pumped Hydro ESS - Conventional & new Concept(pumped air-compression)
l International Collaboration - Fiji(Ocean Energy), Nepal(Micro Hydro), Mongolia(Super Grid)
How to Share and Advance These Technologies in ASIA
CONCLUSIONS
THANK YOU FOR YOUR ATTENTIONS!
ISFMFE2016, Oct. or Nov. Jeju Organized by
KSFM(Korean Society for Fluid Machinery)
THANK YOU FOR YOUR ATTENTIONS!
ISFMFE2016, Oct. or Nov. Jeju Organized by
KSFM(Korean Society for Fluid Machinery)
YOUNG-HO LEE(), Prof., Ph.D.
lyh@kmou.ac.kr
lyh@kmou.ac.kr