The effect of adsorber heat exchanger (adHEX) material on the system performance of a silica gel-water, fin-tube type adsorption chiller was investigated for three typical materials, aluminum (Al), copper (Cu) and stainless steel (SS), following both the first and second laws of thermodynamics. High thermal conductivity was expected to shorten switching time and prolong adsorption/desorption period, and consequently result in a larger amount of water vapor, and lower thermal mass. In other words, since the product of density and heat capacity increases the heat supplied to the system, higher thermal performance was expected for Cu. However, preliminary calculations failed to confirm the expectation. This study examined the causes by artificially changing the Al thermo-physical properties to those of the Cu and SS. Above a threshold thermal conductivity, the main cause was found to be the material’s density, and below the threshold, thermal conductivity was most important. The Al adHEX showed 0.518 of COP, 221 W/kg of SCP and 0.115 of η_e, which were 6.85 % and 6.53 % higher in COP and exergy efficiency than the Cu adHEX.

对于三种典型材料，铝（Al），铜（Cu）和不锈钢（SS），研究了吸附热交换器（adHEX）材料对硅胶-水，翅片管式吸附冷却器的系统性能的影响，遵循热力学的第一定律和第二定律。期望高的热导率缩短切换时间并延长吸附/解吸时间，因此导致大量的水蒸气和较低的热质量。换句话说，由于密度和热容量的乘积增加了提供给系统的热量，因此期望Cu具有更高的热性能。但是，初步计算未能确认预期。这项研究通过人为地将Al的热物理特性更改为Cu和SS的原因来研究原因。高于阈值导热率，主要原因是材料的密度，低于阈值导热率是最重要的。Al adHEX显示COP为0.518，SCP为221 W / kg和η为0.115_e的COP和（火用）效率比Cu adHEX高6.85％和6.53％。