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Internal flow field and heat transfer investigation inside the working chamber of a scroll compressor

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  • Rak, Józef
  • Pietrowicz, Sławomir

Abstract

The paper analyzes the influence of specific parameters such as scroll vane shape, discharge pressure and the rotational speed of a scroll compressor, on the thermal balance inside of a working chamber with tangential leakages. A two-dimensional numerical model of unsteady flow including leakages between working chambers and a special numerical grid deformation procedure is proposed. The developed set of governing equations of mass conservation, momentum, and energy is solved using the Finite Volume Method. In order to determine the upper limit of the heat transfer between vanes and the working medium - air and carbon dioxide, three cases such as: both vanes are assumed to be adiabatic, on one vane a constant temperature is applied and both vanes held at a constant temperature, are investigated. The average values of the Nusselt number inside a working chamber were elaborated and compared with other relations available in the literature, called the lumped model. It was found that tangential leakages have a high effect on thermal processes. A new relation to the Nusselt number including leakages is proposed. After the introduction of the correction factor, the deviation from the lumped model is reduced to less than 15% compared to the numerical model.

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  • Rak, Józef & Pietrowicz, Sławomir, 2020. "Internal flow field and heat transfer investigation inside the working chamber of a scroll compressor," Energy, Elsevier, vol. 202(C).
    • Handle: RePEc:eee:energy:v:202:y:2020:i:c:s0360544220308070
    DOI: 10.1016/j.energy.2020.117700
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    References listed on IDEAS

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    1. Olmedo, Luis Eric & Mounier, Violette & Mendoza, Luis Carlos & Schiffmann, Jürg, 2018. "Dimensionless correlations and performance maps of scroll expanders for micro-scale Organic Rankine Cycles," Energy, Elsevier, vol. 156(C), pages 520-533.
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    3. Liu, Chao & Wang, Shukun & Zhang, Cheng & Li, Qibin & Xu, Xiaoxiao & Huo, Erguang, 2019. "Experimental study of micro-scale organic Rankine cycle system based on scroll expander," Energy, Elsevier, vol. 188(C).
    4. Saidur, R. & Rahim, N.A. & Hasanuzzaman, M., 2010. "A review on compressed-air energy use and energy savings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(4), pages 1135-1153, May.
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    Cited by:

    1. Xiaoran Li & Weifeng Wu & Jing Zhang & Chengqiang Guo & Feng Ke & Fuqiang Jiang, 2023. "Analysis of 3D Transient Flow in a High-Speed Scroll Refrigeration Compressor," Energies, MDPI, vol. 16(7), pages 1-18, March.
    2. Massimo Cardone & Bonaventura Gargiulo, 2020. "Numerical Simulation and Experimental Validation of an Oil Free Scroll Compressor," Energies, MDPI, vol. 13(22), pages 1-11, November.
    3. Kui Lu & Ibrahim A. Sultan & Truong H. Phung, 2023. "A Literature Review of the Positive Displacement Compressor: Current Challenges and Future Opportunities," Energies, MDPI, vol. 16(20), pages 1-25, October.
    4. Xiao Qu & Yantao Shi & Jiongjiong Cai, 2022. "Target Force Curve Searching Method for Axial Electromagnetic Dynamic Balance of Scroll Compressor," Energies, MDPI, vol. 15(5), pages 1-17, February.
    5. Wang, Jun & Han, Yi & Pan, Shiyang & Wang, Zengli & Cui, Dong & Geng, Maofei, 2022. "Design and development of an oil-free double-scroll air compressor used in a PEM fuel cell system," Renewable Energy, Elsevier, vol. 199(C), pages 840-851.
    6. Jian Sun & Bin Peng & Bingguo Zhu, 2021. "Performance Analysis and Test Research of PEMFC Oil-Free Positive Displacement Compressor for Vehicle," Energies, MDPI, vol. 14(21), pages 1-18, November.
    7. Yuheng Du & Shuang Li & Michael Pekris & Wei Li & Guohong Tian, 2023. "Surrogate-Assisted Multi-Objective Optimisation of Transcritical Carbon Dioxide Scroll Expander Flank Clearance Based on Computational Fluid Dynamics," Energies, MDPI, vol. 16(14), pages 1-19, July.

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