固体吸附制冷系统中甲醇的热分解的研究

Experimental Investigation of CH 3OH Decomposition in Solid Adsorption Refrigerator

本文介绍了在Ｍｏｎａｓｈ大学开展的一项对固体吸附制冷机中的金属表面甲醇的热分解的研究，本研究目的是考察太阳能固体活性炭／甲醇制冰机运行性能的长久稳定性。室内实验室模拟表明在一般的太阳能吸附制冷系统中的确发生有甲醇的热分解反应。分解产物中发现了二甲基醚、甲氧甲基醚和其它的化合物。分解速率随金属的不同而变化。这些分解产物（有害气体）可能是导致太阳能制冰机性能变差的一个主要原因。本文还讨论了这些有害气体对太阳能固体吸附制冷循环的影响。

Abstract In order to study the long term performance reliability of solar powered carbon/methanol ice maker,an investigation of thermal decomposition of methanol on alloy's surface under solar adsorption refrigeration condition has been carried out at Monash University.The in door laboratory simulation showed that the thermal decomposition of methanol did occur in the normal solar powered adsorption refrigeration system.Dimethyl ether,methoxymehyl methyl ether and other compounds were found in the decomposition products.The rate of the decomposition depends on the presence of various alloys.These decomposition products(unwanter gases)may be one of the main reasons to cause the performance deterioration of solar ice maker.The impact of the unwanted gases on the ideal solar powered solid adsorption refrigeration cycle is also discussed in the paper.