• CN:11-2187/TH
  • ISSN:0577-6686

›› 2013, Vol. 49 ›› Issue (12): 142-146.

• 论文 • 上一篇    下一篇



  1. 中国科学院理化技术研究所;中国科学院研究生院 新疆大学化学化工学院;电子科技大学航空航天学院
  • 发布日期:2013-06-20

Performance Analysis of Mechanical Vapor Recompression Heat Pump Driven by Centrifuge Fan

PANG Weike;LIN Wenju;PAN Qilin;LIN Wenye;DAI Qunte YANG Luwei;ZHANG Zhentao   

  1. Technical Institute of Physics and Chemistry Graduate University of Chinese Academy of Sciences College of Chemistry and Chemical Engineering, Xinjiang University School of Aerospace, University of Electronic Science and Technology of China
  • Published:2013-06-20

摘要: 在所研制的离心风机驱动的机械蒸汽再压缩热泵系统试验平台上,以水为试验介质,采用理论分析与试验研究相结合的方法,考察可用于处理小流量的风机型机械蒸汽再压缩热泵的运行特性。结果表明:系统实际运行过程中蒸发压力升高时压差基本不变,机组蒸发水量和耗能量均随着蒸发压力升高而有所增加,蒸发水量增幅低于理论计算;蒸发压力升高后风机的内泄漏损失增大、输气系数衰减,从而导致系统绝热效率降低,因此系统单位能耗蒸发水量、制热性能系数均随着系统蒸发压力的升高而出现降低。单位工质所消耗的功量在不同条件下的对比表明,计算指示功可以与理论功保持相同的变化趋势,即两者均随蒸发压力升高而降低;而由于输气系数这一影响因素的存在,实测指示功的变化与理论功变化不同,即实测指示功随蒸发压力升高而略有增加。

关键词: 风机型机械蒸汽再压缩, 绝热效率, 系统性能

Abstract: Based on the designed mechanical vapor recompression(MVR) heat pump driven by a centrifuge fan, the way of theoretical analysis and experimental research is applied to study the fan type of MVR. Choosing water as the experimental medium, the operation characteristic of MVR applied to low evaporation is examined. The results shows as following:the pressure difference is likely to keep stable while the evaporation pressure goes up; the total evaporation water and total input energy increase as its evaporation pressure grows,but the increment is lower than that of theoretical calculation. The leakage loss of the fan inside goes up and its displacement efficiency reduces as the evaporation temperature and pressure rises, which brings forth the drop of the system’s adiabatic efficiency. As a result, its specific moisture extraction rate(SMER) and coefficient of performance(COP) decrease. The trend of average input power for compressed vapor is compared in three different terms and the result shows:The trend of average input power by calculation is the same as that in theory; that is to say, both of them descend when the evaporation pressure ascends. Because of the displacement efficiency, the trend of average input power by measure is different from that in theory-the average input power by measure grows slightly when the evaporation pressure goes up.

Key words: Adiabatic efficiency, Mechanical vapor recompression(MVR) driven by fan, System performance