Traditional designs of solid-sorbent sorption heat pumps consist of two beds, where one bed is regenerating while tke other is adsorbing. The performance of traditional solid sorption heat pumps can be improved by designing the system with multiple beds. Employing the concept of multi-beds, the beds can be preheated using the energy from other beds in the system before they are fully regenerated by an external heat source. Likewise, the beds can be precooled before the adsorption process begins. In this paper, the performance of the three-bed and four-bed solid sorption heat pumps are evaluated and compared to a traditional two-bed system. The results show that the cooling capacity of a three-bed system is significantly higher than a two-bed system, while the COP only improves slightly. However, the performance of a four-bed system (i.e., both COP and cooling capacity) improves significantly, as compared to the two-bed system.
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