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Journal of
Refrigeration
Air Conditioning
Heating & Ventilation
STM JOURNALSScientific Technical Medical
(JoRACHV)
May - August 2014
www.stmjournals.com
STM Publication, a strong initiative by Consortium E-Learning Network Private ltd.(Estd. 2006) was
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Journal of Refrigeration, Air Conditioning, Heating and Ventilation
Focus and Scope Covers
Journal of Refrigeration, Air Conditioning, Heating and Ventilation is published (frequency: three times a year) in
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?Ice harvesting
?Non-cyclic and cyclic refrigeration
?Vapor-compression and Vapor absorption cycle
?Electromechanical cooling
?Ductless (split-system) air conditioning
? Window air conditioning
?Hydronics
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Mr. Puneet Mehrotra
Managing Director STM Journals, Consortium eLearning Network Pvt. Ltd.(CELNET)
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Group Managing Editor Dr. Archana Mehrotra
DirectorCELNET, Delhi, India
Puneet Pandeya
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Aditya Sanyal
Anupama Garg
Himani Pandey
Publication Management Team
Internal Members
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Dr. Bimlesh Lochab
Industrial Tribology Machine Dynamics & Maintenance
Engineering Centre (ITMMEC)
Indian Institute of Technology Delhi, India.
Prof. S. Ramaprabhu
Alternative Energy Technology Laboratory,
Department of Physics,
Indian Institute of Technology, Chennai, India.
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School of Materials Science and Technology,
Institute of Technology, Banaras Hindu University,
Varanasi, India.
Dr. Rakesh Kumar
Assistant Professor, Department of
Applied Chemistry, BIT Mesra,
Patna, India.
Associate Editors
Gargi Asha Jha
Nupur Anand
Priyanka Aswal
Sona Chahal
STM Journal (s) Advisory Board
Dr. Ashish RunthalaLecturer, Biological Sciences Group,
Birla Institute of Technology & Science, Pilani Rajasthan, India.
Dr. Baldev Raj
Former Director, Indira Gandhi Centre for Atomic Research, India.
Chairman, National Institute of Technology Puducherry, India.
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of Civil Engineering National Institute of Technology Trichy, India.
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Metallurgical and Materials Engineering National Institute of Technology,
Rourkela, India.
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AIIMS, New Delhi, India.
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Medicine, Maulana Azad Medical College, New Delhi, India.
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Pune, India.
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University, Baru Sahib, India.
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Chandigarh, India.
STM Journal (s) Advisory Board & Editorial Board
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Engineering KIIT University, Bhubaneswar, Odisha, India.
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Mechanical Engineering, Delhi Technological University, Delhi, India.
Editorial Board
Dr. Balaram Kundu Associate Professor, Department of Mechanical Engineering, Jadavpur
University, Kolkata, India.
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Manipal, India.
Dr. Lev BulatHead of Department Electrical &
Electronic Engineering National Research University ITMO ,St.
Petersburg, Russia.
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Azad NIT, Bhopal, India.
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Technology –BHU, India.
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Mechanical Engineering, Shiv Nadar University, Dadri, India.
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Mechanical Materials and Energy Engineering, IIT Ropar,India.
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Campus,Tamilnadu, India.
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University Katra, J & K, India.
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Engineering Department IIT Banaras Hindu University, India.
Dr. Tanweer HussainAssociate Professor, Dept. of
Mechanical Engineering , Mehran University of Engineering and
Technology, Pakistan.
I take the privilege to present the print version for the Volume 1 Issue (2) of Journal of Refrigeration,
Air Conditioning, Heating and Ventilation. The intension of JoRACHV is to create an atmosphere
that stimulates creativeness, research and growth in the area of Refrigeration, Air Conditioning,
Heating and Ventilation.
The development and growth of the mankind is the consequence of brilliant Research done by
eminent Scientists and Engineers in every field. JoRACHV provides an outlet for Research findings
and reviews in areas of Refrigeration, Air Conditioning, Heating and Ventilation found to be relevant
for National and International recent developments & research initiative.
The aim and scope of the Journal is to provide an academic medium and an important reference for
the advancement and dissemination of Research results that support high level learning, teaching and
research in the domain of Refrigeration, Air Conditioning, Heating and Ventilation.
Finally, and Authors for their continued support and invaluable contributions and suggestions in the
form of authoring I express my sincere gratitude and thanks to our Editorial/ Reviewer board write
ups/ reviewing and providing constructive comments for the advancement of the journals. With
regards to their due continuous support and co-operation, we have been able to publish quality
Research/Reviews findings for our customers base.
I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.
Dr. Archana Mehrotra
Director
STM Journals
Director's Desk
STM JOURNALS
1. Studying the Effects of Reheat on R134A Cycle Performance using Industrial Air-Conditioning Training Equipment K. Anderson, C. McNamara 1
2. Thermodynamic Design Data of NH -LiNO Absorption Heat Pump Systems for Simultaneous 3 3
Cooling and Heating using ANN Approach Dheerendra Vikram Singh, Govind Maheshwari, Manoj Modi 7
3. First Law Analysis of Adsorption Cooling SystemJaspalsinh B Dabhi, Ajitkumar N Shukla 14
4. Mathematical Model of a Silica Gel Water Adsorption Refrigeration System at Adsorption EquilibriumAnirban Sur, Randip K. Das 24
5. An Exergetic based Assessment of Biogas as an Energy Source in a Hybrid Refrigeration System A. Gupta, Y. Anand, S. Anand, S. K. Tyagi 31
ContentsJournal of Refrigeration, Air Conditioning, Heating and Ventilation
JoRACHV (2014)© STM Journals 2014. All Rights Reserved
Journal of Refrigeration, Air Conditioning, Heating and Ventilation
Volume 1, Issue 2
www.stmjournals.com
Studying the Effects of Reheat on R134A Cycle
Performance using Industrial Air-Conditioning
Training Equipment
K. Anderson*, C. McNamara Mechanical Engineering Department, California State Polytechnic University at Pomona, USA
Abstract This paper presents an apparatus-based experiment for teaching air conditioning and
refrigeration in undergraduate engineering hands-on based learning curricula. Results for an R134A based refrigeration and air conditioning performance are shown in this
paper illustrating the effects of re-heat on the COP of the cycle as well as the use on a LabView interface to extract test data. The primary use of this equipment is to show
various “what-if” scenarios. In the present case, the effects of reheat on R134A cycle
performance are illustrated. The COP is found to be 2.9 corresponding ton, an EER = 10 BTU/W-hr and the sensible heat ratio for the psychrometric process is 80%.
Keywords: Air conditioning, LabView, reheat, R134A
JoRACHV (2014) © STM Journals 2014. All Rights Reserved
Journal of Refrigeration, Air Conditioning, Heating and Ventilation
Volume 1, Issue 2
www.stmjournals.com
Thermodynamic Design Data of NH3-LiNO3 Absorption
Heat Pump Systems for Simultaneous Cooling and
Heating using ANN Approach
Dheerendra Vikram Singh1*, Govind Maheshwari
2, Manoj Modi
1
1Shri Vaishnav Institute of Technology & Science, Indore, India
2Institute of Engineering & Technology – DAVV, Indore, India
Abstract The aim of this study is to train neural network which predicts thermodynamic design
data without involving role of thermodynamic properties, temperature concentration
complex relationship and formula of coefficient of performance. Authors have presented values of weights and bias obtained from the trained ANN through which one can
formulate mathematical equations for predicting thermodynamic design data. Authors have achieved coefficient of multiple determinations R
2 as 1, 1, 0.99999 for solution
concentration in absorber and generator and enthalpy-based coefficient of performance
respectively which are quite satisfactory to validate ANN approach for this study.
Keywords: Absorption refrigeration system, ANN, thermodynamic design data,
solution concentration, Ammonia-LiNO3
JoRACHV (2014)© STM Journals 2014. All Rights Reserved
Journal of Refrigeration, Air Conditioning, Heating and Ventilation
Volume 1, Issue 2
www.stmjournals.com
First Law Analysis of Adsorption Cooling System
Jaspalsinh B Dabhi*, Ajitkumar N Shukla School of Technology, PDPU, Gandhinagar, India
Abstract Steady state thermodynamic differential analysis is developed for the adsorption-based
cooling systems. The introduced thermodynamic model represents the behaviour of adsorption cooling systems, based on a precise, reasonable, and clear fundamental
approach. The energy conservation principle is used to analyze components and processes in the system. The dynamics of adsorption is expressed using Dubinin-Astakhov
adsorption equilibrium model. Energy interactions are evaluated to determine the
theoretical performance and the operating parameters of the system. The effect of pressure and temperature on the adsorption/desorption capacity of silica gel is presented
as candidate. The case studied developed reports cooling system build using Silica gel-
water as the working pair.
Keywords: Sorption Cooling, Silica gel, energy balance, thermal cooling
JoRACHV (2014) © STM Journals 2014. All Rights Reserved
Journal of Refrigeration, Air Conditioning, Heating and Ventilation
Volume 1, Issue 2
www.stmjournals.com
Mathematical Model of a Silica Gel Water Adsorption
Refrigeration System at Adsorption Equilibrium
Anirban Sur1, Randip K. Das
2*
1Department of Mechanical Engineering, Inderprastha Engineering College, Sahibabad, U.P., India 2Department of Mechanical Engg. & Mining Machinery Engg, Indian School of Mines, Dhanbad
Jharkhand, India
Abstract CFC (ChloroFluoroCarbon) and HCFC (HydroFluoroCarbon) refrigerants, which are
used for vapour compression refrigeration cycles cause serious environment problems. So research is going on solar refrigeration (producing cooling effect using solar energy is a
promising way to achieve sustainable development, since the energy used is free and not
harmful for the environment) and also used for environment friendly refrigerants. In this paper, heat and mass transfer analysis of adsorption refrigeration system is done in
which solar energy as well as environment friendly refrigerant is used. The proposed
adsorption refrigeration system is based on silica-gel–water adsorption pair. The heat source is waste heat from diesel engine and solar energy simultaneously. The
performance of the proposed cycle is evaluated with the help of the mathematical model at equilibrium condition, is compared with the performance of the basic two-bed
adsorption refrigeration cycle. This makes the system a continuous process. It is seen that
the cooling effect as well as COP of the proposed cycle is superior to the basic cycle. The system is developed for cold storage in rural area where availability of electricity is very
less.
Keywords: Adsorption, Adsorbent, Refrigerant, Adsorbent bed, Adsorbate, Solar heat
JoRACHV (2014)© STM Journals 2014. All Rights Reserved
Journal of Refrigeration, Air Conditioning, Heating and Ventilation
Volume 1, Issue 2
www.stmjournals.com
An Exergetic based Assessment of Biogas as an Energy
Source in a Hybrid Refrigeration System
A. Gupta1, Y. Anand
1, S. Anand
1*, S. K. Tyagi
2
1School of Energy Management, Shri Mata Vaishno Devi University, Katra, J & K, India
2Sardar Swaran Singh National Institute of Renewable Energy, Kapurthala, Punjab, India
Abstract The analysis of biogas operated Ammonia-Water vapor compression absorption (hybrid)
refrigeration system was carried out based on computational model being developed and the thermodynamic properties of working fluids have been used from the computer code.
The variation of performance parameters such as exergy loss, COPCOOLING,
COPHEATING and Exergy efficiency are studied with varying generator temperature, evaporator temperature, condenser and absorber temperature. The results indicate that
maximum COP cooling as well COP heating value are found to be at generator
temperature of 80 o
C for the same variation in the generator temperature from 80 o
C
–135 o
C. The effect of the varying cooling capacity on the exergy loss in different
components as well as exergy efficiency is also studied in the analysis of the hybrid system which revealed the maximum exergy loss is found in the generator which goes on
increasing with an increase in the cooling capacity of the system.
Keywords: Biogas, Boiler, Hybrid system, Compressor, COP, Exergy
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