Experimental validation and sensitivity analysis of a dynamic simulation model for linear compressors

Abstract In comparison with other types of conventional positive displacement compressors for domestic refrigerators, oil-free linear compressors have a number of advantages due to their compactness, low friction, limited number of moving parts, and excellent performance. Limited work was found in the open literature related to comprehensive compressor modeling and model validation of commercially available linear compressors. A comprehensive and generalized simulation model of linear compressors has been recently presented by the same authors. The current paper expands on this work by using experimental data for the simulated compressors to characterize their performance over the operating envelopes and to validate the linear compressor model. The validated model was then used to quantify the major sources of losses and analyze system vibration as well as piston eccentricity, which ultimately could be used to design the next generation of linear compressors.

[1]  R. V. Cadman,et al.  Electrodynamic Oscillating Compressors: Part 1—Design Based on Linearized Loads , 1969 .

[2]  B. Hamrock,et al.  Fundamentals of Fluid Film Lubrication , 1994 .

[3]  Seong-Je Park,et al.  A study on the linear compressor characteristics of the Stirling cryocooler , 2002 .

[4]  H. Hasegawa,et al.  A Study Of A Linear Compressor With A Gas Spring , 2002 .

[5]  K. Liang.  Analysis of oil-free linear compressor operated at high pressure ratios for household refrigeration , 2018 .

[6]  Chul-Gi Roh,et al.  An experimental and numerical study on dynamic characteristic of linear compressor in refrigeration system , 2009 .

[7]  Werner Soedel,et al.  On the resonance and operational behavior of an oscillating electrodynamic compressor , 1979 .

[8]  Zhaohua Li,et al.  Thermodynamic analysis of linear compressor using R1234yf , 2019, International Journal of Refrigeration.

[9]  Paul Bailey,et al.  Modelling and measurement of a moving magnet linear compressor performance , 2014 .

[10]  James E. Braun,et al.  Theoretical analysis of dynamic characteristics in linear compressors , 2020 .

[11]  Kun Liang,et al.  A review of linear compressors for refrigeration , 2017 .

[12]  Kun Liang,et al.  Characteristics of a novel moving magnet linear motor for linear compressor , 2019, Mechanical Systems and Signal Processing.

[13]  Craig R. Bradshaw,et al.  A Miniature-Scale Linear Compressor for Electronics Cooling. , 2011 .

[14]  Jun Tan,et al.  Theoretical modeling and experimental verification of the motor design for a 500 g micro moving-coil linear compressor operating at 90–140 Hz , 2019, International Journal of Refrigeration.