对热泵系统中使用的几种类型和型号的换向阀的性能进行了比较研究。该研究包括基于第一原理的特征参数定义，以及基于实验数据的计算参数不确定性分析结果。文中还给出了一个使用系数的例子。这些参数涉及:（1）从排放口的质量泄漏，（2）（高压）到吸入侧（低压），（3）从换向阀阀体到环境的内部热损失和外部热损失，以及（4）压降。测试分为两种不同的设置:一种用于测量质量泄漏，另一种用于测量热损失和压降。对试验结果的分析表明，提出的系数是合适的表征参数，在某些情况下，换向阀对排热性能的影响并不显著。 单位:I-PCITION:研讨会，ASHRAE交易，1986年，第92卷，pt。2B，波特兰，或

A study to compare the performance of several types and makes of reversing valves as used in heat pump systems is presented. The study includes the definition of characterizing parameters based on first princlples and results of an uncertainty analysis of the computed parameters based on experimental data. An example of the use of the coefficients is presented as well.The parameters address: (1) mass leakage from the discharge, (2) (high pressure) to the suction side (low pressure), (3) internal heat loss and exnernal heat loss from the body of the reversing valve to the ambient, and (4) pressure drops. Tests were performed in two different setups: one used to measure mass leakage and the other for heat losses and pressure drops.Analysis of test results demonstrates that proposed coefflcients are proper characterizing parameters, and in some cases effects of reversing valve on heat Dump performance are not unsignificant.Units: I-P