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Modelling and measurement of a moving magnet linear compressor performance

Author

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  • Liang, Kun
  • Stone, Richard
  • Davies, Gareth
  • Dadd, Mike
  • Bailey, Paul

Abstract

A novel moving magnet linear compressor with clearance seals and flexure bearings has been designed and constructed. It is suitable for a refrigeration system with a compact heat exchanger, such as would be needed for CPU cooling. The performance of the compressor has been experimentally evaluated with nitrogen and a mathematical model has been developed to evaluate the performance of the linear compressor. The results from the compressor model and the measurements have been compared in terms of cylinder pressure, the ‘P–V’ loop, stroke, mass flow rate and shaft power. The cylinder pressure was not measured directly but was derived from the compressor dynamics and the motor magnetic force characteristics. The comparisons indicate that the compressor model is well validated and can be used to study the performance of this type of compressor, to help with design optimization and the identification of key parameters affecting the system transients. The electrical and thermodynamic losses were also investigated, particularly for the design point (stroke of 13 mm and pressure ratio of 3.0), since a full understanding of these can lead to an increase in compressor efficiency.

Suggested Citation

  • Liang, Kun & Stone, Richard & Davies, Gareth & Dadd, Mike & Bailey, Paul, 2014. "Modelling and measurement of a moving magnet linear compressor performance," Energy, Elsevier, vol. 66(C), pages 487-495.
    • Handle: RePEc:eee:energy:v:66:y:2014:i:c:p:487-495
    DOI: 10.1016/j.energy.2014.01.035
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    References listed on IDEAS

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    1. Bolaji, B.O., 2010. "Experimental study of R152a and R32 to replace R134a in a domestic refrigerator," Energy, Elsevier, vol. 35(9), pages 3793-3798.
    2. Zhao, Lei & Cai, Wenjian & Ding, Xudong & Chang, Weichung, 2013. "Model-based optimization for vapor compression refrigeration cycle," Energy, Elsevier, vol. 55(C), pages 392-402.
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    Cited by:

    1. Hao Shen & Zhaohua Li & Kun Liang & Xinwen Chen, 2022. "Numerical modeling of a novel two-stage linear refrigeration compressor [Linear compressors for electronics cooling: energy recovery and its benefits]," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 17, pages 436-445.
    2. Li, Chengzhan & Sun, Jian & Zou, Huiming & Cai, Jinghui & Zhu, Tingting, 2023. "Characteristic analysis and energy efficiency of an oil-free dual-piston linear compressor for household refrigeration with various conditions," Energy, Elsevier, vol. 270(C).
    3. Liang, Kun, 2018. "Analysis of oil-free linear compressor operated at high pressure ratios for household refrigeration," Energy, Elsevier, vol. 151(C), pages 324-331.
    4. Xue, Renjun & Tan, Jun & Zhao, Bangjian & Zhao, Yongjiang & Tan, Han & Wu, Shiguang & Zhai, Yujia & Ma, Dong & Wu, Dirui & Dang, Haizheng, 2023. "Thermodynamic characteristics of a single-stage stirling-type pulse tube cryocooler capable of 1220 W at 77 K with two cold fingers driven by one linear compressor," Energy, Elsevier, vol. 278(PB).
    5. Wu, Shiguang & Zhao, Bangjian & Tan, Jun & Zhao, Yongjiang & Zhai, Yujia & Xue, Renjun & Tan, Han & Ma, Dong & Wu, Dirui & Dang, Haizheng, 2023. "Thermodynamic study on throttling process of Joule-Thomson cooler to improve helium liquefaction performance between 2 K and 4 K," Energy, Elsevier, vol. 277(C).
    6. Chengzhan Li & Jian Sun & Huiming Zou & Jinghui Cai & Tingting Zhu, 2023. "Experimental Analysis of the Discharge Valve Movement of the Oil-Free Linear Compressor in the Refrigeration System," Sustainability, MDPI, vol. 15(7), pages 1-15, March.

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