采用复合吸附剂和高效吸附床的吸附制冷机性能测试

利用平行流换热器和自制的硅胶/氯化钙复合吸附剂研制了一台小型吸附式制冷样机,并对样机进行了试验测试。测试结果表明:相对于硅胶吸附制冷样机,复合吸附剂吸附制冷样机的COP和制冷功率都有了明显的提高;在热源温度为90℃,冷却水温度为35℃,冷冻水进口温度为16.5℃、出口温度为14.4℃,吸附10min,脱附5 min的运行工况下,在整个循环周期内(15 min),制冷功率为1.03 kW,SCP为128.3 W/kg,COP为0.29;在吸附周期内(10 min),制冷功率为1.54 kW,SCP为192.4 W/kg,样机的能量密度为10.3 kW/m3,平行流换热器的换热系数为472.3 W/(m2.K)。

Performance test of adsorption chiller employed composite adsorbents and efficient adsorption bed

This paper developed a small adsorption chiller employed parallel flow heat exchanger and self-made silica gel/calcium chloride composite adsorbents,and the chiller performance has been tested.The testing results indicate that the COP and the cooling power of the composite adsorption chiller are significantly improved compared with silica gel adsorption chiller.The performance testing of adsorption chiller shows that the cooling capacity,SCP and COP is 1.03 kW,128.3 W/kg and 0.29,respectively,when hot water temperature,cooling water temperature,chilled water inlet temperature,chilled water outlet temperature and circulation time is 90,35,16.5,14.4 ℃ and 15 min.The cooling power and the SCP is 1.54 kW and 192.4 W/kg,when hot water temperature,cooling water temperature,chilled water inlet temperature,chilled water outlet temperature and circulation time is 90,35,16.5,14.4 ℃ and 15 min.The energy density of the prototype is 10.3 kW/m3.The coefficient of heat transfer of the parallel flow heat exchanger is 472.3 W/(m2·K).