Adsorption refrigeration systems are commercially matured due to the need of decreasing electrical power consumption and usage of non-environmental refrigerants, which are the main problems of the conventional refrigeration systems. This paper presents an investigation on the performance of small-scale two-bed adsorption chiller combined with heat and mass recovery cycles with the aid of a lumped analytical simulation technique. This model is applied to analyze the effect of fin design parameters on the heat transfer inside the bed and system performance. The working pair used in the simulations is RD silica gel–water. Defining a base-case for the fin design parameters, fin thickness, fin radius, and fin spacing are changed and the performances of four fin configurations are demonstrated. Decreasing the fin spacing enhances the heat transfer significantly. For optimum operation condition, specific cooling capacity is improved by an average value up to 147.6% by decreasing fin spacing from 4 mm to 2 mm, while increasing the fin radius decreases temperatures of the adsorbent. Specific cooling capacity is improved by an average value up to 44% by decreasing fin radius from 16 mm to 8 mm. The fin thickness has a minor effect on heat transfer in the bed.

由于需要减少电力消耗和使用非环境制冷剂，吸附式制冷系统已经在商业上成熟，这是常规制冷系统的主要问题。本文借助集总分析仿真技术，对结合热和质量回收循环的小型两床吸附式制冷机的性能进行了研究。该模型用于分析翅片设计参数对床内传热和系统性能的影响。模拟中使用的工作对是RD硅胶水。定义散热片设计参数的基本情况，改变散热片厚度，散热片半径和散热片间距，并演示了四种散热片配置的性能。减小散热片间距可显着提高热传递。对于最佳操作条件，通过将翅片间距从4 mm减小到2 mm，比冷却能力可将平均值提高多达147.6％，而增大翅片半径可降低吸附剂的温度。通过将翅片半径从16 mm减小到8 mm，比冷却能力平均提高多达44％。散热片的厚度对床内的传热影响很小。