Effect of irreversibility on COP of double effect steam absorption chillers

Major irreversibility's in the absorption chillers are due to heat transfer between the absorption cycles and the environment. This effect also occurs for LiBr/H2O steam absorption chillers. This study investigated the effect of external heat transfer processes on LiBr/H2O steam absorption chil...

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Main Authors: Abd Majid, M.A., Nakamura, T., Xiaoming, Z., Nordin, A.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.25361 /
Published: Asian Research Publishing Network 2016
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007256866&partnerID=40&md5=d76fa960811d4d6f570064e7c9e38446
http://eprints.utp.edu.my/25361/
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id utp-eprints.25361
recordtype eprints
spelling utp-eprints.253612021-08-27T12:59:12Z Effect of irreversibility on COP of double effect steam absorption chillers Abd Majid, M.A. Nakamura, T. Xiaoming, Z. Nordin, A. Major irreversibility's in the absorption chillers are due to heat transfer between the absorption cycles and the environment. This effect also occurs for LiBr/H2O steam absorption chillers. This study investigated the effect of external heat transfer processes on LiBr/H2O steam absorption chillers installed at two district cooling plants in Malaysia. The study was done by evaluation of operating data. The heat transfer processes occurring at the desorbers, evaporators, condensers and absorbers for the absorption chillers at these two plants were investigated using reversible and zero order models. It is noted that the trends shown by the reversible and zero order models indicate the irreversibility occurred for the absorption chillers at both plants. The COPs figures for reversible and zero order models for the absorption chillers at one of the plant indicate lower values. One possible cause of this occurrence was due to lower temperatures of returned chilled water. Hence in order to improve COP, the temperatures of returned chilled water should be increased. © 2006-2016 Asian Research Publishing Network (ARPN). Asian Research Publishing Network 2016 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007256866&partnerID=40&md5=d76fa960811d4d6f570064e7c9e38446 Abd Majid, M.A. and Nakamura, T. and Xiaoming, Z. and Nordin, A. (2016) Effect of irreversibility on COP of double effect steam absorption chillers. ARPN Journal of Engineering and Applied Sciences, 11 (22). pp. 12979-12983. http://eprints.utp.edu.my/25361/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Major irreversibility's in the absorption chillers are due to heat transfer between the absorption cycles and the environment. This effect also occurs for LiBr/H2O steam absorption chillers. This study investigated the effect of external heat transfer processes on LiBr/H2O steam absorption chillers installed at two district cooling plants in Malaysia. The study was done by evaluation of operating data. The heat transfer processes occurring at the desorbers, evaporators, condensers and absorbers for the absorption chillers at these two plants were investigated using reversible and zero order models. It is noted that the trends shown by the reversible and zero order models indicate the irreversibility occurred for the absorption chillers at both plants. The COPs figures for reversible and zero order models for the absorption chillers at one of the plant indicate lower values. One possible cause of this occurrence was due to lower temperatures of returned chilled water. Hence in order to improve COP, the temperatures of returned chilled water should be increased. © 2006-2016 Asian Research Publishing Network (ARPN).
format Article
author Abd Majid, M.A.
Nakamura, T.
Xiaoming, Z.
Nordin, A.
spellingShingle Abd Majid, M.A.
Nakamura, T.
Xiaoming, Z.
Nordin, A.
Effect of irreversibility on COP of double effect steam absorption chillers
author_sort Abd Majid, M.A.
title Effect of irreversibility on COP of double effect steam absorption chillers
title_short Effect of irreversibility on COP of double effect steam absorption chillers
title_full Effect of irreversibility on COP of double effect steam absorption chillers
title_fullStr Effect of irreversibility on COP of double effect steam absorption chillers
title_full_unstemmed Effect of irreversibility on COP of double effect steam absorption chillers
title_sort effect of irreversibility on cop of double effect steam absorption chillers
publisher Asian Research Publishing Network
publishDate 2016
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007256866&partnerID=40&md5=d76fa960811d4d6f570064e7c9e38446
http://eprints.utp.edu.my/25361/
_version_ 1741196962161491968
score 11.62408

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