一种针对GM型氦压缩机的模拟方法  

A Simulation Method for GM-type Helium Compressors

作　　者：刘东立[1,2] Dietrich Marc Thummes Guenter 甘智华[1,2,5] 

机构地区：[1]浙江大学制冷与低温研究所,杭州310027 [2]浙江省制冷与低温技术重点实验室,杭州310027 [3]TransMIT-Centre for Adaptive Cryotechnology and Sensors,Giessen,Germany,D-35392 [4]Institute of Applied Physics,University of Giessen,Giessen,Germany,D-35392 [5]国家冷冻冷藏设备质量检验中心,河南民权476800

出　　处：《工程热物理学报》2017年第3期459-463,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51376157);浙江大学能源工程学院博士研究生国际合作研究与交流项目

摘　　要：采用针阀、流量计、压力表和功率计等组件,对现有的一台商用GM型氦压缩机进行了实验测试。通过对测得的质量流量、输入电功和进排气压力等数据的分析处理,拟合得到了以压比为自变量的吸气体积流量和效率的关系式,提出了确定压缩机内部容积分布的方法。吸气体积流量、效率和容积分布三种特性可用于计算GM型氦压缩机在不同工况下的质量流量、输入电功和进排气压力。A commercial compressor was measured with a setup which mainly composed of a needle valve,a mass-flow meter,two pressure gauges and a power meter.Based on the measured data of mass flow,input power,discharge and suction pressures,the relationships between suction volume flow,exergetic efficiency,and pressure ratio were derived by fitting the data.Meanwhile,a method to evaluate the volume distribution inside the compressor package was proposed.With the determined characteristics of suction volume flow,exergetic efficiency and volume distribution,the mass flow,electrical input power,discharge and suction pressures of the compressors operating in a GM-type cryocooler can be predicted at various working conditions.

关 键 词：低温制冷机 氦压缩机 GM制冷机 GM型脉管制冷机 模拟 

分 类 号：TB651[一般工业技术—制冷工程]