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Studies on Steam Absorption Chillers Performance at a Cogeneration Plant

Abd Majid, Mohd Amin and Sulaiman, S. A. and Fujii, Tatsuo and Naono, Naono (2014) Studies on Steam Absorption Chillers Performance at a Cogeneration Plant. MATEC Web of Conference 13, 05003 (2014) .

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Abstract

Absorption chillers at cogeneration plants generate chilled water using steam supplied by heat recovery steam generators. The chillers can be of either single-effect or double effect configuration and the coefficient of performance (COP) depends on the selection made. The COP varies from 0.7 to 1.2 depending on the types of chillers. Single effect chillers normally have COP in the range of 0.68 to 0.79. Double effect chillers COP are higher and can reach 1.2. However due to factors such as inappropriate operations and maintenance practices, COP could drop over a period of time. In this work the performances of double effect steam absorption chillers at a cogeneration plant were studied. The study revealed that during the period of eleven years of operation the COP of the chillers deteriorated from 1.25 to 0.6. Regression models on the operation data indicated that the state of deterioration was projected to persist. Hence, it would be recommended that the chillers be considered for replacement since they had already undergone a series of costly repairs.

Item Type:Article
Subjects:T Technology > TJ Mechanical engineering and machinery
Academic Subject One:Mechanical Engineering
Departments / MOR / COE:Mission Oriented Research > Energy
ID Code:11642
Deposited By: AP Ir Dr Mohd Amin Abd Majid
Deposited On:28 Apr 2015 02:54
Last Modified:28 Apr 2015 02:54

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