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A study on cycle performance variation of a linear compressor considering valve behavior

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Abstract

The suction valve of a linear compressor is a reed valve and the discharge valve is a circular plate valve. The reed valve moves in three dimensions while the discharge valve translates in one dimension. Thus, the reed valve needs a FSI model but the discharge valve can use a rigid body model. In this study, both the FSI model and the rigid body model were applied to the suction valve to find out if they are appropriate for the cycle analysis of the linear compressor. The effects of the valve dynamics on the cooling capacity, the compression power, and EER were investigated for each valve model. The results show that both models are in good agreement with the experiments although the FSI model is more appropriate for the prediction of the valve lift or closing time. However, the computation time of the FSI model is approximately 10 times greater than that of the rigid body model. Therefore, if the structural analysis of the valve is not necessary, the rigid body model can be effectively used to predict the cycle performance such as EER or compression work.

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Authors and Affiliations

  1. Dept. of Mechanical Engineering, Graduate School, Kongju National University, Cheonan, Chungnam, 330-717, Korea

    Sang Jun Park & Il Sun Hwang

  2. Refrigeration Comp. Team, LG Electronics, Gasan R&D Campus, Gasan-dong, Geumcheon-gu, Seoul, 153-802, Korea

    Won Sik Oh

  3. Dept. of Mechanical and Automotive Engineering, Kongju National University, Cheonan, Chungnam, 330-717, Korea

    Young Lim Lee

Authors
  1. Sang Jun Park
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  2. Il Sun Hwang
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  3. Won Sik Oh
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  4. Young Lim Lee
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Corresponding author

Correspondence to Young Lim Lee.

Additional information

Recommended by Associate Editor Chang Yong Park

Sang Jun Park graduated from Kongju National University with a major in Mechanical and Automotive Engineering in 2012. Now he is a graduate student in Ph.D. program at the Department of Mechanical Engineering of Kongju National University.

Young Lim Lee graduated from Hanyang University with a major in Mechanical Engineering in 1986. He got a Ph.D. at University of Texas at Austin in 1995. He is currently interested in the research topics of high efficiency linear compressor as well as electronics cooling, vacuum glazing and heat pumps.

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Park, S.J., Hwang, I.S., Oh, W.S. et al. A study on cycle performance variation of a linear compressor considering valve behavior. J Mech Sci Technol 31, 4481–4488 (2017). https://doi.org/10.1007/s12206-017-0848-z

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  • DOI: https://doi.org/10.1007/s12206-017-0848-z

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