CO_2热泵热水系统毛细管组合节流试验研究  

Experimental investigation on CO_2 heat pump hot water system with capillary tubes combination throttling

作　　者：杜培俭 罗会龙[2] 林辩启 李永亮 杨晓川 

机构地区：[1]昆明东启科技股份有限公司 [2]昆明理工大学建筑工程学院

出　　处：《制冷与空调》2018年第2期60-64,共5页Refrigeration and Air-Conditioning

基　　金：国家科技支撑计划项目(2012BAA13B02);国家自然科学基金项目(51166005)

摘　　要：毛细管节流具有结构简单,无运动部件,成本低廉等优点,但其质流量及压降调节范围较窄。为适应热泵系统全年运行对工质流量及压降调节的要求,笔者设计并构建了一种三毛细管组合节流的跨临界循环CO_2热泵热水系统。在恒温环境试验室测试分析了各种典型工况下跨临界循环CO_2热泵热水系统的节流特性及热力性能。测试结果表明,根据环境温度合理选择节流模式与制热温度,三毛细管组合节流CO_2热泵热水系统可全年稳定运行,并具有较优良的热力性能。Capillary tube throttling has many advantages,such as simple structure,low cost and without motion component.In order to adapt the regulation of mass flow rate and pressure drop for year round operation,a CO_2 heat pump hot water system with threetube combination throttling was designed and built.The throttling characteristics and thermal performance of the CO_2 heat pump hot water system were tested and analyzed in the constant temperature environmental chamber.Test results show that the system performance is excellent.According to ambient temperature adopting appropriate throttling mode and heating temperature,the system could run efficiently all-the-year-round.

关 键 词：CO2热泵 毛细管 组合节流 试验研究 

分 类 号：TB657.2[一般工业技术—制冷工程]