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Journal of Mechanical Science and Technology

, Volume 33, Issue 6, pp 2665–2670 | Cite as

Study on performance change in a linear compressor considering refrigerant leakage through the suction valve clearance

  • Il Sun Hwang
  • Young Lim LeeEmail author
Article
  • 32 Downloads

Abstract

Leakage of refrigerant in a linear compressor is one of the main factors affecting compressor performance. The refrigerant leakage mainly occurs due to piston clearance or valve clearance. Valve clearance leakage has been studied [1, 2]. However, as in the present study, there is no research that accurately predicts the performance of a compressor using CFD while considering the valve clearance of a linear compressor. Therefore, in this study, the valve clearance leakage was experimentally measured according to the compression chamber pressure and a 3 - dimensional CFD cycle analysis was performed considering the valve clearance leakage. It was found that the actual clearance of the suction valve corresponds to about 2 ∼ 4 μm. According to the cycle analysis, when the valve clearance decreases from 5 μm to 3 μm, the cooling capacity increases by about 5 % and the EER increases by 6 %. Furthermore, considering leakage due to valve clearance, the simulated valve opening period and the valve vibration at closing were more in agreement with the experiment.

Keywords

Linear compressor Suction valve leakage Suction valve clearance Reed valve CFD analysis 

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Notes

Acknowledgments

This research was supported by a research grant of the Kongju National University in 2018.

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Copyright information

© KSME & Springer 2019

Authors and Affiliations

  1. 1.Dept. of Mechanical Engineering, Graduate SchoolKongju National UniversityCheonan, ChungnamKorea
  2. 2.Dept. of Mechanical and Automotive EngineeringKongju National UniversityCheonan, ChungnamKorea

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