Multi-Bed Multi-Stage Adsorption Refrigeration Cycle-Reducing Driving Heat Source Temperature

K.C.Amanul Alam, Akira Akahira, Yoshinori Hamamoto, Atsushi Akisawa, Takao Kashiwagi, Bidyut Baran Saha, Shigeru Koyama, Kim Choon Ng, Hui Tong Chua

Research output: Contribution to journalArticle

Abstract

The study aims at designing a multi-bed multi-stage adsorption chiller that can be driven by waste heat at near ambient temperature. The chiller is designed such a way that it can be switched into different modes depending on the driving heat source temperature. Stage regeneration techniques have been applied to operate the chiller by relatively low temperature heat source. Driving heat source temperature is validated by simulated data and the performances obtained from different modes are compared. In terms of COP (Coefficient of performance),the chiller shows best performance in conventional single-stage mode for driving heat source temperature greater than 60°C, two stage mode for driving source temperature between 42 and 60°C,in three-stage mode for driving source temperature less than 42°C. In terms of cooling capacity, it shows the best performance in single-stage mode for heat source temperature greater than 70°C. The mass recovery process in single-stage mode is also examined. It is seen that the mass recovery process improve cooling capacity significantly, specially for the low regenerating temperature region.
Original languageEnglish
Pages (from-to)413-420
Number of pages8
JournalTransactions of the Japan Society of Refrigerating and Air Conditioning Engineers
Volume20
Issue number3
DOIs
Publication statusPublished - 2003

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