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本文首先简要介绍了空气—空气板式全热交换器结霜实验的平台和方法。在实验中,分别使用叉流加逆流板式全热交换芯体和叉流板式全热交换芯体测试了标准结霜工况下2种板式全热交换器的换热性能及相关参数变化,并采用照片的形式展示了2种板式全热交换器的结霜规律。其次,针对现有板式全热交换器在严寒季节出现的结霜问题,开发了解决此问题的旁通除霜装置,该装置在原有换热器设备上增设了旁通风阀和旁通风道,使板式全热交换器有换热和除霜2种运行模式,并用实验验证分析了其除霜效果。
This paper first briefly introduces the air-air plate heat exchanger frost experiment platform and method. In the experiment, the heat exchange performance and related parameters of two kinds of plate-type total heat exchangers under standard frost condition were tested respectively by using cross-flow and counter-current plate type total heat exchange cores and cross-flow plate type total heat exchange cores respectively In the form of photos shows the two kinds of plate heat exchanger frost law. Secondly, aiming at the frost formation problem of the existing plate-type total heat exchanger in the severe cold season, a bypass defrosting device has been developed to solve the problem. The device adds a bypass air valve and a bypass air duct to the original heat exchanger device, The total heat exchanger plate heat exchanger and defrosting two kinds of operating modes, and experimental verification of the defrosting effect.