具有非平衡吸附特征的吸附床传热特性研究

吸附床是固体吸附制冷系统的关键部件，对于连续回热等快速进行的吸附制冷循环，吸附床内温度的变化及其压力交变对吸附特性的影响不可忽视。本文对吸附床在吸附、解吸过程中的温度场和吸附率分布进行了模拟计算，并将其与采用平衡吸附模型的计算结果进行了比较，文中比较及结论有助于深入认识吸附床在制冷循环中工作特性，并为吸附床的设计提供参考依据。

INVESTIGATION OF HEAT TRANSFER CHARACTER ON ADSORBENT BED WITH CONSIDERATION OF NON-EQUILIBRIUM ADSORPTION

The adsorbent bed is the key element of an adsorption refrigeration system. Its operation characteristics of temperature and pressure affect the adsorption characteristics and cycle performance greatly. The discussions about the temperature and adsorbed mass distribution in the adsorbent bed during adsorption and desorption processes are shown with numerical method. Both models with equilibrium and non-equilibrium adsorption are compared with each other. It is concluded that non- equilibrium adsorption should be considered for solid adsorption refrigeration particularly for short cycle time. The discussion and comparison are helpful to reveal operating performance of adsorbent bed and also to provide reference to the design of adsorbent bed.