变频冷水机组在城市轨道交通的适用性研究*
Applicability of variable-speed water chillers in urban rail transit
摘要：
结合城市轨道交通的环境特点，分析了轨道交通与民用建筑中空调系统应用的差异。对离心、螺杆式压缩机的特性及变频化应用的优缺点进行了理论分析，介绍了冷水机组运行工况对离心、螺杆式压缩机产生的不同影响。基于制冷机房的系统应用，研究了变频离心、螺杆式冷水机组的适用性，并提出了相应的优化策略。
关键词：轨道交通,变频冷水机组,离心式压缩机,螺杆式压缩机,适用性
Abstract：
Based on the environmental characteristics of urban rail transit, analyses the differences of air conditioning system application between rail transit and civil buildings. Analyses the characteristics of centrifugal and screw compressors and the advantages and disadvantages of variable-speed applications. Presents the different effects of water chiller operating conditions on centrifugal and screw compressors. Based on the system application of chiller plants, studies the applicability of the variable-speed centrifugal and screw water chillers, and proposes corresponding optimal strategies.
Keywords:railtransit,variable-speedwaterchiller,centrifugalcompressor,screwcompressor,applicability