In this paper a heat absorption unit has been designed to cool the entering hot air.For this aim,five slabs of PCM(Phase change material)have been used inside the cooling unit.The velocity and temperature values of entering hot air respectively are 0.1 m/s and 50°C.Three different cases for PCM design were investigated:in the first case RT 44HC,RT 35HC,RT 31,RT 28HC and RT 25HC as phase change materials were used in such a way that the PCM with higher number gets contact with the hot air first.In the second and third cases only one PCM type were used for the five slabs inside the cooling unit.They are RT 44HC and RT 25HC.Analysis performed for 10h.Results show that although maximum heat absorbed for the first 8h is in the case of only RT 25HC used in the cooling system,after 8h the cooling unit with mixed PCM shows a better performance and minimum exit air temperature has been observed for this case at the end of 10h.
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机译：在本文中，吸热单元已经设计为冷却进入的热空气。对于这种目的，在冷却单元内使用了五个PCM（相变材料）。进入热空的速度和温度值分别为0.1 M / S和50℃C.研究了PCM设计的不同案例：在第一种情况下，在RT 44HC，RT 35HC，RT 31，RT 28HC和RT 25HC中，以相变材料用于较高的PCM数字首先与热空气接触。第二和第三个案例只有一个PCM类型用于冷却单元内的五个板块。它们是RT 44HC和RT 25HC.Analysis of 10h。结果表明虽然最大吸收对于第8h的情况，在冷却系统中仅使用的RT 25HC的情况下，在8h后，用混合PCM的冷却单元显示出更好的性能，并且在10h的末端已经观察到这种情况下的最小出口空气温度。
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