热泵型空调系统制冷剂流量控制方法的研究
Study of refrigerant flow rate control methods in a heat pump air conditioning system
摘要：
以Harms模型计算两相区内的空泡系数，用稳态分布参数法计算了制冷和制热两种运行工况下热泵型空调系统冷凝器和蒸发器内所含的制冷剂量。结果表明，制热工况下的制冷剂充注量比制冷工况下的充注量小。在此基础上提出了储液器法和喷射液态制冷剂法两种制冷剂流量控制方法。
关键词：Harms模型 制冷剂充注量 储液器 喷射
Abstract：
Calculates the void fraction in two-phase fluid region by Harms model, and calculates the refrigerant charge quantity in the condenser and evaporator in a heat pump air conditioning system with steady distributed parameter method under refrigeration and heating operating situations. The results show that refrigerant charge quantity in heating operating condition is less than that in refrigeration operating condition. Presents the two refrigerant flow rate control methods of liquid reservoir and ejecting liquid refrigerant based on above investigation.
Keywords:Harms model， refrigerant charge quantity， liquid reservoir， ejecting