Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System

Performance of the absorption cooling system is still a challenge due to the coefficient of performance (COP) that is generally poor when compared with the conventional vapor compression cycle. High solar radiation in hot climates is usually associated with high ambient temperature and consequently...

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Main Authors:	Sirwan, Ranj, Alghoul, M.A., Sopian, K., Yusoff, Ali, Jasim, Abdulateef
Format:	Article
Language:	English English
Published:	Elsevier Ltd 2013
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/6593/ http://umpir.ump.edu.my/id/eprint/6593/ http://umpir.ump.edu.my/id/eprint/6593/ http://umpir.ump.edu.my/id/eprint/6593/1/Evaluation%20of%20Adding%20Flash%20Tank%20to%20Solar%20Combined%20Ejector%E2%80%93Absorption%20Refrigeration%20System.pdf http://umpir.ump.edu.my/id/eprint/6593/7/Evaluation%20of%20Adding%20Flash%20Tank%20to%20Solar%20Combined%20.pdf

id	ump-6593
recordtype	eprints
spelling	ump-65932016-05-10T03:02:45Z http://umpir.ump.edu.my/id/eprint/6593/ Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System Sirwan, Ranj Alghoul, M.A. Sopian, K. Yusoff, Ali Jasim, Abdulateef TJ Mechanical engineering and machinery Performance of the absorption cooling system is still a challenge due to the coefficient of performance (COP) that is generally poor when compared with the conventional vapor compression cycle. High solar radiation in hot climates is usually associated with high ambient temperature and consequently peak cooling demand. Absorption cooling cycles can be powered by solar but the performance is limited by heat source temperature (solar collector) and high ambient temperature that can affect the condensation process. Efficiency enhancement of the system components is essential to increase the COP of the system. A modification in the combined absorption–ejector cooling system is adopted. Adding a removable flash tank between the condenser and evaporator could improve entrainment ratio of the ejector, along with improving the cooling effect inside the evaporator. A computer simulation program is developed to evaluate the performance of the modified combined cycle using aqua-ammonia (NH3–H2O) refrigerant. The performance of the proposed combined cooling cycle is compared with basic absorption, and combined absorption–ejector cooling cycles. Results showed a significant improvement in the COP of the modified cycle at different operating conditions. Cooling effect and capacity of the evaporator is enhanced due to the reduction of flash gas delivered to the evaporator. Furthermore, the flash tank optimized the ejector entertainment ratio and consequently increasing the condenser pressure. This optimization will enable the system to perform well in hot climates where the condenser efficiency is limited by ambient temperature. Elsevier Ltd 2013 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/6593/1/Evaluation%20of%20Adding%20Flash%20Tank%20to%20Solar%20Combined%20Ejector%E2%80%93Absorption%20Refrigeration%20System.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/6593/7/Evaluation%20of%20Adding%20Flash%20Tank%20to%20Solar%20Combined%20.pdf Sirwan, Ranj and Alghoul, M.A. and Sopian, K. and Yusoff, Ali and Jasim, Abdulateef (2013) Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System. Solar Energy, 91. pp. 283-296. ISSN 0038-092X http://dx.doi.org/10.1016/j.solener.2013.01.018 DOI: 10.1016/j.solener.2013.01.018
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Sirwan, Ranj Alghoul, M.A. Sopian, K. Yusoff, Ali Jasim, Abdulateef Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System
description	Performance of the absorption cooling system is still a challenge due to the coefficient of performance (COP) that is generally poor when compared with the conventional vapor compression cycle. High solar radiation in hot climates is usually associated with high ambient temperature and consequently peak cooling demand. Absorption cooling cycles can be powered by solar but the performance is limited by heat source temperature (solar collector) and high ambient temperature that can affect the condensation process. Efficiency enhancement of the system components is essential to increase the COP of the system. A modification in the combined absorption–ejector cooling system is adopted. Adding a removable flash tank between the condenser and evaporator could improve entrainment ratio of the ejector, along with improving the cooling effect inside the evaporator. A computer simulation program is developed to evaluate the performance of the modified combined cycle using aqua-ammonia (NH3–H2O) refrigerant. The performance of the proposed combined cooling cycle is compared with basic absorption, and combined absorption–ejector cooling cycles. Results showed a significant improvement in the COP of the modified cycle at different operating conditions. Cooling effect and capacity of the evaporator is enhanced due to the reduction of flash gas delivered to the evaporator. Furthermore, the flash tank optimized the ejector entertainment ratio and consequently increasing the condenser pressure. This optimization will enable the system to perform well in hot climates where the condenser efficiency is limited by ambient temperature.
format	Article
author	Sirwan, Ranj Alghoul, M.A. Sopian, K. Yusoff, Ali Jasim, Abdulateef
author_facet	Sirwan, Ranj Alghoul, M.A. Sopian, K. Yusoff, Ali Jasim, Abdulateef
author_sort	Sirwan, Ranj
title	Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System
title_short	Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System
title_full	Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System
title_fullStr	Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System
title_full_unstemmed	Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System
title_sort	evaluation of adding flash tank to solar combined ejector–absorption refrigeration system
publisher	Elsevier Ltd
publishDate	2013
url	http://umpir.ump.edu.my/id/eprint/6593/ http://umpir.ump.edu.my/id/eprint/6593/ http://umpir.ump.edu.my/id/eprint/6593/ http://umpir.ump.edu.my/id/eprint/6593/1/Evaluation%20of%20Adding%20Flash%20Tank%20to%20Solar%20Combined%20Ejector%E2%80%93Absorption%20Refrigeration%20System.pdf http://umpir.ump.edu.my/id/eprint/6593/7/Evaluation%20of%20Adding%20Flash%20Tank%20to%20Solar%20Combined%20.pdf
first_indexed	2023-09-18T22:02:30Z
last_indexed	2023-09-18T22:02:30Z
_version_	1777414491830484992

Evaluation Of Adding Flash Tank To Solar Combined Ejector–Absorption Refrigeration System

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