容积式制冷压缩机电效率分析.pdfVIP

Vol. 34 ,No. 3 第34 卷第3 期 容积式制冷压缩机电效率分析 June ,2013 2013 年6 月 文章编号:0253 -4339(2013)03-α肌 -07 doi: 10. 3969/j. ìssn. 0253 -4339.2013.03. ∞1 容积式制冷压缩机电效率分析 马一太刘忠彦李敏霞 {天津大学中低温热能高效利用教育部重点实验室 天津 3侃附72) 摘 要 对制冷压缩机的发展进行了简单的概述，统计计算了市场上几种主要容积式压缩机的电效率，并进行了对比和分析，结 果表明:涡旋压缩机的电效率基本上在0.5 -0.75 之间，主要集中于 0.6 -0.7 之间;活塞压缩机的效率基本上在0.4 -0.7 之 间，而主要集中于0.5-0.65 之间;螺杆压缩机的电效率基本在0.5 -0.75 之间，主要集中于0.65 -0.75 之间;压比为2 -4 时压 缩机电效率达到最大。为制冷压缩机的设计、校核和计算提供基础和依据，为制冷系统的性能改进提供方向。 关键词 电效率;涡旋压缩机;活塞压缩机;螺杆式压缩机;蒸发温度;压比 文献标i只码:A 中图分类号:TB652 Analysis of Electrical Efliciency for Positive Displacement Refrigerant Compressor Ma Yitai Liu Zhongyan Li Minxia (Key Laboratory of Efficíent UtilizalÍon of I.ow and Medium Grade Energy , Tianjín Unívers坷， Tí叫in ，班汩72 ，由ína) Abstract This paper has briefly sumrnarized the development of refrigerant compressor; and accounted the statistic of the electrical effi- ciency for positive displacement refrigerant compressor. After comparing and analyzing the above data , it is shown 由刨出e electrical e伍­ ciency of scrol1 compressors basìcal1y varies from 0.5 to 0.75 , with a focus on section O. 6 -D. 7; efficiency of piston compressors is basi- cally between 0.4皿d 0.7 ，机.th a focus on section O. 5-D. 65; efficiency of screw compressors is basically between O. 5 and 0.75 , wi出 a focus on section 0.65-0 .75. Besides , the results show that the efficiency of compressors re时hes its best when its cornpression ratio is be- tween 2 and 4 , which provides íoundation and basis for designing , checking and calculation of refrigeratíon compressor