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一、常用两用型热机匹配介质的组合形式制冷/供热两用型热机匹配介质的组合形式即流经冷热泵蒸发器与冷凝器的是何种介质。常用的组合形式有空气—空气式,空气—水式,水—水式三种,而在水—水式供热/制冷两用型热机中,又有工质转换系统和介质转换系统,下面分别讨论这常用的四种方式: 1.空气—空气式其工质循环和工作制度的转换如图1。当压缩机工作时,利用1、2、3、4阀的开
First, the common dual-purpose heat engine matching medium combination of cooling / heating dual-type heat engine matching medium combination that is through the cold heat pump evaporator and condenser what kind of media. The common combinations are air-air, air-water, and water-water. In the water-water heating/cooling heat engine, there are work medium conversion systems and medium conversion systems. Discuss the four commonly used methods separately: 1. The conversion of the air-air type working fluid cycle and work system is shown in Figure 1. When the compressor is working, use 1, 2, 3, 4 valve open