Experimental Investigation of Cycle Time Effects on the Performance of a Three-Bed Adsorption Chiller
Adsorption chillers are environmentally friendly refrigeration systems that utilize waste heat from industrial processes or residential sources as a thermal energy input. These systems have gained attention as a potential alternative to conventional vapor compression chillers in response to global environmental challenges. To overcome the relatively low cooling performance of adsorption chillers, various studies have focused on employing multi-bed configurations. In this study, we experimentally investigated the effect of cycle time on the performance of a three-bed adsorption chiller. The experimental setup consisted of three adsorption beds, each incorporating a MOF-based adsorbent. Cycle time was varied from 300 to 420 seconds in 30-second intervals, resulting in a total of five experimental conditions. The results showed that increasing the cycle time from 300 to 330 seconds led to a notable improvement, with the coefficient of performance (COP) increasing by approximately 16.2% and the cooling capacity by 6.3%. However, when the cycle time exceeded 330 seconds, the average variations in COP and cooling capacity were limited to 4.5% and 0.2%, respectively.