TED-AJ03-170 Performance Evaluation of a Waste Heat Driven Two-Stage Adsorption Refrigeration Cycle

概要

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The performance of a waste heat driven 4-bed two-stage adsorption chiller has been investigated numerically. It is found that the chiller can be driven effectively by the waste heat of temperature 55℃ with the heat sink at environment temperature, while conventional single stage can not exploit such a low temperature lift. Results show that COP (Coefficient of Performance), COHR (Coefficient of Heat Recovery) and thermal efficiency of the two-stage chiller are superior to those of the conventional chiller if the heat source temperature is relatively low. The performance of the chiller is also investigated with the various mass allocations between the upper stage and bottom stage. It is found that cooling capacity and COP can be improved up to 22% and 34%, respectively, just by adding double amount of adsorbent mass in bottom beds than the mass in upper beds.
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