流体机械

2008, No.436(10) 82-85+34

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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

傅明星;张兴群;
FU Ming-xing1,ZHANG Xing-qun2(1.Shaanxi University of Technology,Hanzhong 723000,China;2 Xi′an Jiaotong University,Xi′an 710049,China)

摘要(Abstract):

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(KeyWords): 空气源热泵;结霜;除霜;复叠循环
air-source heat pump;frost;defrost;cascade cycle

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作者(Author): 傅明星;张兴群;
FU Ming-xing1,ZHANG Xing-qun2(1.Shaanxi University of Technology,Hanzhong 723000,China;2 Xi′an Jiaotong University,Xi′an 710049,China)

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