Abstract
A chemisorption heat pump utilizes thermal energy for cooling. Chemisorption heat pump can be applied to a wider variety of applications when the system uses thermal energy at lower temperature. Thus, study on the performance of a chemisorption heat pump operated by thermal energy of 40 °C was conducted. 500 W system was built and its performance was analyzed through experiments. Chemisorption heat pumps are capable of continuous cooling operation through alternating operation, in which the system performance changes depending on the operating time of each operating mode. There are no existing studies have analyzed the performance of a chemisorption heat pump driven by a 40 °C heat source according to the operating time. Therefore, the performance change according to the operation time of each modes was identified. The cooling capacity, coefficient of performance and specific cooling power were measured in corresponding ranges of 272.2–543.2 W, 0.06–0.24 and 42.5–84.9 W/kg for each case. The cooling capacity is maximum when the operation times of the ‘adsorption/desorption’ and ‘preparation 1’ mode are 10 min and 10 s, respectively, and the coefficient of performance is maximum when the operation times are 30 min and 20 s, respectively.
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