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Experimental study of performance improvement of a four-bed adsorption chiller by using heat-and-mass recovery
journal contributionposted on 2023-05-17, 14:45 authored by Ng, KC, Xiaolin WangXiaolin Wang, Lin, YS, Saha, BB, Koyama, S, Akisawa, A, Kashiwagi, T
The efficacy of a four-bed adsorption chiller has been studied experimentally with respect to a simple but yet effective passive heat and mass recovery schemes. It substantially improves the adsorption chiller COP by as much as 30% over a broad range of cycle time with a wide heat source, coolant and chilled water temperatures. Two schemes have been considered here: Firstly, only the mass recovery is achieved by pressure equalization between the concomitantly cooled adsorber and heated desorber, exploiting the intrinsic vapor-uptake potential by pressure swing that remains in the adsorbent at the end of a half-cycle. Secondly, when both the heat and mass recovery schemes are employed at a rating point of maximum cooling capacity, the chiller COP could increase further to as much as 48%. These improvements are performed without additional hardware changes to the adsorption chiller. (c) 2006 Elsevier Ltd. All rights reserved.
Publication titleInternational Journal of Heat and Mass Transfer
Department/SchoolSchool of Engineering
Place of publicationUSA