双级复叠式空气源热泵冷热水机组的应用研究  

Applied Research of Air-source Cascade Heat Pump Unit

作　　者：傅明星[1] 张兴群[2] 

机构地区：[1]陕西理工学院,陕西汉中723000 [2]西安交通大学,陕西西安710049

出　　处：《流体机械》2008年第10期82-85,34,共5页Fluid Machinery

摘　　要：提出了一种复叠热泵机组,以解决常规空气源热泵冷热水机组在寒冷地区冬季使用压缩比高、效率低等问题。该机组通过电磁阀可以在单级与复叠循环间切换;讨论了系统从单级转向复叠循环的切换点,计算结果表明,该机组在冬季较低的室外环境温度下能节能运行。A cascade hea pump unit was developed to solve the winter application problems of conventional units in cold regions, e.g. , high compression ratio with low heating efficiency. The cascade heat pump unit functions in both single - stage cycle and cascade cycle by optimizing control conditions and maximizing energy- saving. Calculation results indicate that the unit works well with low energy consumption in winter.

关 键 词：空气源热泵 结霜 除霜 复叠循环 

分 类 号：TQ051.5[化学工程]