通过改变制冷剂焓试验方法，对热泵换向阀的传热损失进行了试验研究。研究仅限于传递到制冷剂吸入流的热量。对于各种材料组合，包括黄铜、钢、不锈钢和铜，使用恒定尺寸的阀门进行测试，发现了使用每温差驱动力的焓变化的参数值。基于上述焓变化的系数用于比较各种换向阀结构。阀体和管道材料的变化使传递到制冷剂吸入流的热量发生显著变化。 单位:I-PCITION:研讨会，ASHRAE交易，1986年，第92卷，pt。2B，波特兰，或

Experimental tests were made to determine the heat transfer loss from heat pump reversing valves by a change in refrigerant enthalpy test method. The investigation is limited to the heat transferred to the refrigerant suction stream. Values of a parameter using the enthalpy change per temperature difference driving force were found for various combinations of materials, including brass, steel, stainless steel, and copper tested with valves of a constant size.A coefficient based on the above enthalpy change is used to compare the various reversing valve constructions. Variations in body and tube materials made significant changes in heat transferred to the refrigerant suction stream.Units: I-P