Article ID: 24-42AD
The objective of this study is to examine a double effect scheme of adsorption refrigeration cycle experimentally. The cycle consists of high temperature cycle (HTC) and low temperature cycle (LTC) where the adsorption heat of HTC is transferred to LTC for the desorption by circulating fluid. Because LTC works without external heat input, COP can be higher than conventional single stage adsorption cycle. This study experimentally investigated how the double effect scheme worked. Silica-gel and FAM-Z02 were selected as adsorbents for LTC and HTC, respectively. The results with the heat source temperature of 90 ℃ indicated that LTC produced cooling with the adsorption heat of HTC, and HTC also generated cooling with the circulating fluid at approximately 50 ℃. Hence, the double effect scheme has been confirmed to work successfully. This study investigated the effect of adsorbent mass allocation to HTC and LTC on the performance in terms of SCP, where 9 cases were examined. The results also suggested that COP could be approximately twice as high as the conventional single stage adsorption cycle because only HTC consumed external heat.
