Abstract
Usage of linear compressors is on the rise due to their high efficiency. In this paper, leakage of a linear compressor has been studied through numerical analysis and experiments. First, nitrogen leakage for a stagnant piston with fixed cylinder pressure as well as for a moving piston with fixed cylinder pressure was analyzed to verify the validity of the two-phase flow analysis model. Next, refrigerant leakage of a linear compressor in operation was finally predicted through 3-dimensional unsteady, two phase flow CFD (Computational fluid dynamics). According to the research results, the numerical analyses for the fixed cylinder pressure models were in good agreement with the experimental results. The refrigerant leakage of the linear compressor in operation mainly occurred through the oil exit and the leakage became negligible after about 0.4s following operation where the leakage became lower than 2.0x10-4 kg/s.
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References
H. K. Lee, G. Y. Song, J. S. Park, E. P. Hong and W. H. Jung, Development of the linear compressor for a household refrigerator, Proceedings International Compressor Engineering Conference, Purdue University (2000) 31–38.
B. Yang, C. R. Bradshaw and E. A. Groll, Modeling of a semi-hermetic CO2 reciprocating compressor including lubrication submodels for piston rings and bearings, International Journal of Refrigeration, 36 (7) (2013) 1925–1937.
M. Ozsipahi, S. Cadirci, H. Gunes, K. Sarioglu and H. Kerpicci, A numerical study on the lubrication system for hermetic reciprocating compressor used in household refrigerators, International Journal of Refrigeration, 48 (2014) 210–220.
H. Lee, S. H. Ki, S. S. Jung and W. H. Rhee, The innovative green technology for refrigerators development of innovative linear compressor, Proceedings International Compressor Engineering Conference, Purdue University (2008).
C. R. Bradshaw, E. A. Groll and S. V. Garimella, Sensitivity analysis of a comprehensive model for a miniature-scale linear compressor for electronics cooling, International Journal of Refrigeration, 36 (2013) 1998–2006.
J. K. Kim and J. H. Jeong, Dynamic response of a capacitymodulated linear compressor to supply voltage disturbances, International Journal of Refrigeration, 40 (2014) 84–96.
N. Chen, Y. J. Tang, Y. N. Wu, X. Chen and L. Xu, Study on static and dynamic characteristics of moving magnet linear compressors, Cryogenics, 47 (2007) 457–467.
J. K. Kim and J. B. Kim, Modulation characteristics of a linear compressor for evaporating and condensing temperature variations for household refrigerators, International Journal of Refrigeration, 40 (2014) 370–379.
Ansys Inc., Ansys fluent version 14, User’s Manual version, 14 (2013).
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Recommended by Associate Editor Hyoung-gwon Choi
Il Sun Hwang graduated from Kongju National University with a major in Mechanical and Automotive Engineering in 2012. Now he is a graduate student in M.S. 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 toilets as well as electronics cooling, vacuum glazing and heat pumps.
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Hwang, I.S., Oh, W., Park, K. et al. A study on two phase flows of linear compressors for the prediction of refrigerant leakage. J Mech Sci Technol 29, 4737–4743 (2015). https://doi.org/10.1007/s12206-015-1021-1
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DOI: https://doi.org/10.1007/s12206-015-1021-1