Abstract
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.
Original language | English (US) |
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Pages (from-to) | 3343-3348 |
Number of pages | 6 |
Journal | International Journal of Heat and Mass Transfer |
Volume | 49 |
Issue number | 19-20 |
DOIs | |
State | Published - Sep 2006 |
Externally published | Yes |
Keywords
- Adsorption chiller
- Adsorption cycle
- Heat and mass recovery
- Pressure equalization
- Valve-timing delay
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering
- Fluid Flow and Transfer Processes