單螺桿水蒸汽壓縮機應用于機械蒸汽再壓縮熱泵(MVR)系統

Single screw water vapor compressor is applied in the mechanical vapor recompression heat pump (MVR) system. Analysis of the working process of the compressor is carried out. Experiments for the MVR systems with closed cycle and open cycle are performed under different evaporation temperature conditions. The results show that the volume efficiency of the compressor is larger than 0.73 and the adiabatic efficiency is larger than 0.5 when the evaporation temperature is higher than 80 ℃. The largest practical COP of the system reaches 12.5 and the highest actual SMER reaches 20 kg/(kW·h) in the present experiments. The high efficiency and energy-saving features of the MVR system driven by single screw water vapor compressor are fully shown in this study.

將單螺桿水蒸汽壓縮機應用于機械蒸汽再壓縮熱泵(MVR)系統,并對該壓縮機的工作過程進行分析;在不同蒸發溫度的工況下,對采用閉式和開式循環的MVR系統進行實驗研究.實驗結果表明,當蒸發溫度高于80 ℃時,壓縮機的容積效率超過0.73,絕熱內效率大于0.5;系統的實際COP最高達12.5,實際單位能耗蒸發水量最高可達20 kg/(kW·h);充分顯示了單螺桿水蒸汽壓縮機驅動MVR系統的高效節能特性.  服務 

關鍵詞 ： 單螺桿水蒸汽壓縮機, MVR, 壓縮機效率, COP, SMER

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