热泵四通换向阀容量实验台的研制

根据四通阀容量特性的预研结果，对国外类似控制阀的容量测量规定及国家标准有关四通阀容量测量的报批稿进行了研究和分析，提出了正确测试热泵四通换向阀容量曲线和名义容量的方法，并规定了测试容量时需保证的名义工况点。基于该方法研制了适合于测试热泵四通换向阀容量和进行容量特笥研究的全自动容量测试实验台，实现了四通换向阀与热泵系统的合理匹配与节能控制。

A New Experimental Unit of Testing Capacity for Heat Pump Four-Way Reversing Valve

Exactly testing the capacity of a four way reversing valve is the basis of matching it with a heat pump. However, there has been no standard which describes the method of testing in either ARI or ASHRAE. A reasonable way of testing the capacity of revesing valve was proposed based on the analysis of testing method of solenoid valve, the research results of the capacity characteristic of heat pump four way reversing valve, and the analysis of Chinese national standard draft. The heat pump working states that should be kept stable during the test process were defined. Using the method, a new automatically controlling and high precision experimental unit to measure the capacity curve and the nominal capacity of four way reversing valve was established. The results can be applied to the system matching, and therefore, the energy saving can be realized. The accomplishment of the test unit also lays a theoretical and practical foundation to form the standard of heat pump air conditioner four way reversing valve.