【摘要】 近年来 ,我国风冷热泵空调技术的应用方兴未艾 ,风冷热泵由于其自身的优点 ,得到了制冷行业的重视。本文以R2 2、R13 4a、R4 0 7C及R4 0 4A为工质 ,运用试验研究的方法 ,对热泵系统在冬季标准工况下的制热量及耗功进行测试和比较 ,可为风冷热泵系统中替代工质的选用 ,提供详细的实测数据和具体的设计准则。更多还原

【Abstract】 In recent years, the air-cooled heat pump has been widely used in a lot of air-conditioning applications due to its unique advantages. Carried out on a test rig, the performance of the air-cooled heat pump is studied with various alternative refrigerants such as R22, R134a, R404A and R407C. The capacity and power consumption of the heat pump system are measured and compared under several standard working conditions. The experimental data obtained during the study can provide detailed guidelines for the selection of alternative refrigerants and the design of air-cooled heat pump systems.更多还原