The new thermal management models of linear compressors have been recently reported. These models adopt the simplified transient flow effects to shorten the excessive analysis time. Among the unsteady flow effects of the linear compressor, the effect of the gap flow between the compressor housing and the body due to the body vibration on the heat transfer performance was studied in this paper. For this study, a numerical analysis for the unsteady axisymmetric flows was performed by using CFD (Computational Fluid Dynamics). The results show that the high-speed refrigerant flows occurred in the gap between the compressor housing and the body, which contribute to increasing the heat transfer from high temperature refrigerants in the housing to the outside air. In addition, as the gap decreases, the refrigerant flow rate through the gap increases and the heat transfer rate increases as well.
목차
ABSTRACT 1. 서론 2. 수치해석 2.1 수치해석 방법 3. 결과 및 고찰 3.1 전체 속도장 변화 3.2 갭 크기에 따른 속도 변화 3.3 갭 크기에 따른 대류열전달계수 변화 4. 결론 References
키워드
냉매 압축기스프링 진동흡입계 온도전산유체 역학Refrigerant compressorSpring vibrationSuction system temperatureCFD
저자
황일선 [ Il-Sun Hwang | Member, Postdoctora fellow, Kongju National University ]
이영림 [ Young-Lim Lee | Member, Dept. of Mch. and Auto. Eng., Kongju National University ]
Corresponding Author