Absorption refrigeration system using engine exhaust gas as an energy source
A single-effect absorption refrigeration system that uses LiBr-water solution and engine exhaust gas is investigated. The generator is a spiral fin-and-tube heat exchanger, while the condenser, evaporator, and absorber are shell and coil heat exchangers. Experiments are conducted at engine speeds of...
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2018-09-01
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Series: | Case Studies in Thermal Engineering |
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doaj-b10ddb459fb1490ab40580fca0b0c5002020-11-24T21:47:17ZengElsevierCase Studies in Thermal Engineering2214-157X2018-09-0112797804Absorption refrigeration system using engine exhaust gas as an energy sourceSorawit Kaewpradub0Prawit Sanguanduean1Wattanapong Katesuwan2Nares Chimres3Phatthi Punyasukhananda4Lazarus Godson Asirvatham5Omid Mahian6Ahmet Selim Dalkilic7Somchai Wongwises8Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, ThailandFluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, ThailandFluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, ThailandFluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, ThailandPTT Research and Technology Institute, The Petroleum Authority of Thailand (PTT), Ayutthaya, ThailandDepartment of Mechanical and Aerospace Engineering, Karunya Institute of Technology and Sciences, Coimbatore 641114, India; Department of Mechanical Engineering, Karunya Institute of Technology and Sciences, Coimbatore 641114, IndiaCenter for Advanced Technologies, Ferdowsi University of Mashhad, Mashhad, IranHeat and Thermodynamics Division, Department of Mechanical Engineering, Faculty of Mechanical Engineering, Yildiz Technical University, Istanbul 34349, TurkeyFluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, Thailand; The Academy of Science, The Royal Society of Thailand, Sanam Suea Pa, Dusit, Bangkok 10300, Thailand; Corresponding author at: Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, Thailand.A single-effect absorption refrigeration system that uses LiBr-water solution and engine exhaust gas is investigated. The generator is a spiral fin-and-tube heat exchanger, while the condenser, evaporator, and absorber are shell and coil heat exchangers. Experiments are conducted at engine speeds of 1000, 1200, 1400, and 1600 rpm; expansion valve opening percentages of 54.5%, 72.7%, and 90.9% at the separator outlet and 3.41%, 4.55%, and 5.68% at the condenser outlet; refrigerant temperatures at the condenser outlet of 25, 30, and 35 °C; and LiBr-water solution flow rates of 0.35 and 0.7 LPM. The results show that the system could work with an engine speed of 1200–1400 rpm. The cooling load and coefficient of performance (COP) increase with increasing engine speed. The highest COP of 0.275 is reached at an engine speed of 1400 rpm, opening percentage of 72.7% at the separator outlet and 4.55% at the condenser outlet, water temperature of 25 °C at the condenser outlet, and LiBr-water flow rate of 0.7 LPM. The decreased refrigerant temperature at the condenser outlet helps to increase both cooling load and COP. The increase of the LiBr-water solution flow rate helps to increase cooling load but decrease COP. Keywords: Absorption refrigeration, LiBr-water solution, Exhaust gas, COPhttp://www.sciencedirect.com/science/article/pii/S2214157X18302314 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sorawit Kaewpradub Prawit Sanguanduean Wattanapong Katesuwan Nares Chimres Phatthi Punyasukhananda Lazarus Godson Asirvatham Omid Mahian Ahmet Selim Dalkilic Somchai Wongwises |
spellingShingle |
Sorawit Kaewpradub Prawit Sanguanduean Wattanapong Katesuwan Nares Chimres Phatthi Punyasukhananda Lazarus Godson Asirvatham Omid Mahian Ahmet Selim Dalkilic Somchai Wongwises Absorption refrigeration system using engine exhaust gas as an energy source Case Studies in Thermal Engineering |
author_facet |
Sorawit Kaewpradub Prawit Sanguanduean Wattanapong Katesuwan Nares Chimres Phatthi Punyasukhananda Lazarus Godson Asirvatham Omid Mahian Ahmet Selim Dalkilic Somchai Wongwises |
author_sort |
Sorawit Kaewpradub |
title |
Absorption refrigeration system using engine exhaust gas as an energy source |
title_short |
Absorption refrigeration system using engine exhaust gas as an energy source |
title_full |
Absorption refrigeration system using engine exhaust gas as an energy source |
title_fullStr |
Absorption refrigeration system using engine exhaust gas as an energy source |
title_full_unstemmed |
Absorption refrigeration system using engine exhaust gas as an energy source |
title_sort |
absorption refrigeration system using engine exhaust gas as an energy source |
publisher |
Elsevier |
series |
Case Studies in Thermal Engineering |
issn |
2214-157X |
publishDate |
2018-09-01 |
description |
A single-effect absorption refrigeration system that uses LiBr-water solution and engine exhaust gas is investigated. The generator is a spiral fin-and-tube heat exchanger, while the condenser, evaporator, and absorber are shell and coil heat exchangers. Experiments are conducted at engine speeds of 1000, 1200, 1400, and 1600 rpm; expansion valve opening percentages of 54.5%, 72.7%, and 90.9% at the separator outlet and 3.41%, 4.55%, and 5.68% at the condenser outlet; refrigerant temperatures at the condenser outlet of 25, 30, and 35 °C; and LiBr-water solution flow rates of 0.35 and 0.7 LPM. The results show that the system could work with an engine speed of 1200–1400 rpm. The cooling load and coefficient of performance (COP) increase with increasing engine speed. The highest COP of 0.275 is reached at an engine speed of 1400 rpm, opening percentage of 72.7% at the separator outlet and 4.55% at the condenser outlet, water temperature of 25 °C at the condenser outlet, and LiBr-water flow rate of 0.7 LPM. The decreased refrigerant temperature at the condenser outlet helps to increase both cooling load and COP. The increase of the LiBr-water solution flow rate helps to increase cooling load but decrease COP. Keywords: Absorption refrigeration, LiBr-water solution, Exhaust gas, COP |
url |
http://www.sciencedirect.com/science/article/pii/S2214157X18302314 |
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