Operating Point Estimation for an Absorption Process using Data Clustering Technique

Majid, Mohd Amin Abd; Sulaima, Shaharin A.; Mokhtar, Hamdan; Tamiru, A. L.

doi:10.3923/jas.2013.377.384

Cited by 1 publication

(3 citation statements)

References 11 publications

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“…Study on the chillers by Gilani et al [7] Study by Majid et al [9], reported that both chillers were operated at reduced capacity. However one of the chillers consumed steam as high as that needed to run a new chiller at full capacity (2012).…”

Section: Resultsmentioning

confidence: 99%

“…The most recent unpublished study [6], covers data from 2003 to 2013. The published studies are by Gilani et al [7], Rangkuti et al [8] and Majid et al [9]. Gilani et al [7] and Rangkuti et al [8] studies were based on 2005 data.…”

Section: Sac Performance Studies On the Understudy Chillersmentioning

confidence: 99%

“…Gilani et al [7] and Rangkuti et al [8] studies were based on 2005 data. The study by Majid et al [9] was based on 2008 to 2012 data.…”

Section: Sac Performance Studies On the Understudy Chillersmentioning

confidence: 99%

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Studies on Steam Absorption Chillers Performance at a Cogeneration Plant

Majid

Sulaiman

Fujii

2014

MATEC Web of Conferences

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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.

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Section: Resultsmentioning

confidence: 99%

Section: Sac Performance Studies On the Understudy Chillersmentioning

confidence: 99%