空气源热泵毛细管节流空调系统的研究  

Study on the Capillary Tube Adjusting Air-conditioning System in the Air Source Heat Pump

作　　者：苏顺玉[1] 张春枝[1] 陈俭[1] 

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430070

出　　处：《湖南大学学报（自然科学版）》2009年第S2期1-3,共3页Journal of Hunan University:Natural Sciences

基　　金：湖北省自然科学基金资助项目(2008CDB363);湖北省教育厅科研项目(B20091101)

摘　　要：根据气液两相流动的均相流假设,建立了绝热毛细管的分布参数模型.在冷热工况下空调系统制冷剂充注量差值的基础上,采用该模型模拟计算了应用毛细管节流的热泵型空调系统中主副毛细管的长度.将储液器法和采用主副毛细管控制制冷剂流量这两种方法进行了对比分析,结果表明,在控制系统高低压差和制冷剂流量时,两种方法各有利弊.因此,提出了采用主副毛细管和增加储液器相结合的方法控制热泵型空调系统冷热工况下的制冷剂流量.Based on the homogeneous assumption of gas and liquid two-phase flow,a distributed parameter model of adiabatic capillary tube was established.Based on the refrigerant charge inventory differences of air-conditioning system between refrigeration and heating conditions,the lengths of the major and associate capillary tubes in the capillary tube adjusting air-conditioning and heat pump system were simulated by using this model.The liquid reservoir method and the associate capillary method were analyzed.The results showed that the two methods had their advantages and disadvantages in controlling tje system pressure differences and refrigerant rate.The liquid reservoir and associate capillary combined method was proposed to control the refrigerant rate of the air-conditioning and heat pump system in refrigeration and heating conditions.

关 键 词：热泵系统 毛细管 分布参数模型 充注量 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]