Numerical simulation of a GM-type pulse tube cryocooler system: Part I. Characterization of compressors. (January 2017)

• Record Type: Journal Article
• Authors: Liu, Dongli; Dietrich, Marc; Thummes, Guenter; Gan, Zhihua
• Is Part Of: Cryogenics. Volume 81(2017)
• Page Start: 8
• Page End: 13
• Publication Date: 2017-01
• Subjects: GM-compressor -- Oil lubricated -- Cryocooler -- Pulse tube cryocooler -- Characteristics; Low temperature engineering -- Periodicals; Low temperature research -- Periodicals; 536.56
• DOI: 10.1016/j.cryogenics.2016.11.002
• Languages: English
• ISSNs: 0011-2275

Abstract

Highlights: Several GM-compressors are characterised with a simple method. Empirical relations of suction volume flow with pressure ratio are given. Empirical relations of exergetic efficiency with pressure ratio are also listed. The discharge and suction volumes of these GM-compressors are determined. These characteristics are useful for the simulation of GMPTCs. Abstract: For the numerical simulation of GM-type pulse tube cryocoolers (GMPTCs), several compressors with different input powers were characterised under static conditions, including their mass flow, input power, discharge and suction pressures. Based on the measured data, the relationships between suction volume flow, exergetic efficiency, and pressure ratio were found to be independent of the working gas amount contained in the compressor package. A method to evaluate the volume distribution inside the compressor package was proposed and verified. The empirically determined relations of suction volume flow and exergetic efficiency together with the volume distributions are given for the measured compressors. With these characteristics, the mass flow, electrical input power, discharge and suction pressures of the compressors operating in a GMPTC system can be predicted at various working conditions.