变频转子式压缩机降低吸气干度对容积效率的影响

利用变频滚动转子式压缩机实验台测量了吸气干度x>0.9时压缩机的容积效率.结果表明,当0.90.95)和额定转速时,容积效率仅下降1%,因此,此类压缩机适合用于少量吸气带液的运行.

Influence of Decreasing Suction Vapor Quality on Volumetric Efficiency of Variable Speed Rotary Compressor

The volumetric efficiency of rolling piston compressor was studied on a variable refrigerant flow system under the condition of suction vapor quality greater than 0.9.The experimental results show that when 0.9<x<1, volumetric efficiency decreases with the increase of pressure ratio and the decrease of vapor quality.Under the same frequency, volumetric efficiency under different compression ratio shows a similar change trend.The volumetric efficiency of rolling piston compressors with high backpressure and low suction pressure drop decreases slightly under a little liquid entrainment.The decreasing ratio is only 1% under a relatively large quality(x>0.95)and at the rated operating speed.Therefore these compressors are suitable to operate with a little liquid entrainment.