吸附床内部特性对固体吸附式转轮太阳能制冷系统的影响

Effect of Adsorption Bed Inner Characteristic on Solid Adsorption Refrigeration System with Rotating Wheel Driven by Solar Energy

采用均匀压力场模型对太阳能驱动的固体吸附式转轮制冷系统中吸附床的传热传质过程建立了数学模型,并通过数值模拟的方法,分析了吸附床的内部特性参数的改变对系统性能系数(COP)及吸附床平均脱附率等参数的影响。结果表明,固体吸附式转轮制冷系统的COP值随着转轮吸附床的导热系数及吸附剂的堆积密度的增加而显著的增加,而随着吸附床的转速及吸附剂厚度的增加先增加后减小。

The solid adsorption refrigeration system with rotating wheel driven by solar energy is studied . In the study, the mathematics model of adsorption bed in heat and mass trasfer process is established by adopting uniform pressure field model. The effect of the inner characteristic parameters change on cop and average desorption ratio is analyzed by adopting numerical simulation method. The results show that the cop value will increase when the thermal coeffiCient of adsorption bed and the accumulation density of sorbent increase, and the cop value will increase and then will minish when the rotating speed of adsorption bed and the sorbent thickness increase.