Abstract The increase of the superheat is one of several factors adversely affecting the efficiency of the refrigeration cycle. To this end, it is important to release the heat inside the compressor. Therefore, in this paper, we have increased the convective heat transfer coefficient inside the compressor by utilizing the vibration of the moving part of the compressor. The results show that reducing the gap between the shell and the moving part increases the flow velocity in the gap resulting in the increase of convective heat transfer coefficient.

Abstract
 1. 서론
 2. 수치해석 방법
 3. 결과 및 고찰
 4. 결론
 References

• 황일선(Dept. of Mechanical Engineering, Graduate School, Kongju National University) | Il Sun Hwang
• 이영림(Dept. of Mechanical and Automotive Engineering, Kongju National University) | Young Lim Lee Corresponding Author