소형 냉장고용 왕복동식 압축기의 열전달에 관한 수치해석 연구 = A Numerical Study on Heat Transfer in a Reciprocating Compressor for a Domestic Refrigerator

다국어 초록 (Multilingual Abstract)

An analytical model was developed using the lumped mass parameter method to estimate temperature distribution of metal parts and refrigerant of the hermetic reciprocating compressor. All of the lumped mass has been equated with the first law of thermodynamics. In the delivered equation, correlations of heat transfer coefficient in the heat transfer equation were taken from open literature. The equations are solved by Gauss-Jordan method simultaneously.To verify the developed numerical program, an experiment was conducted with a domestic refrigerator. The compressor which had been installed at the bottom of the experimental refrigerator was modified to measure internal temperature. Model verification test was conducted at 30℃ outdoor temperature with variation of compressor cooling conditions. As a result, there is a good consistency between calculated temperature and measured one.

참고문헌 (Reference)

1 "Unsteady-state analysis of the compression cycle of a hermetic reciprocating compressor" 2 : 883-888, 1998

2 "S. V. 1986 Prediction of heat transfer in compressor cylinders" 159-169,

3 "Modeling of cylinder heat transfer－Large effort Proc. of the Purdue Compressor Technology Conf." 43-50, 1980

4 "Instantaneous heat transfer to the cylinder wall in reciprocating compressors Proceedings of the 1972 Purdue Compressor Technology Conference" Purdue University 521-526, 1972

5 "Friction losses measurements on a reprocating compressor mechanism Proceedings of the 1990 International Compressor Engineering Conference at Purdue" 741-748, 1990

6 "An analytical model of heat transfer to the suction gas in a low-side hermetic refrigeration compressor International Compressor Engineering Conference at Purdue" 898-907, 1990

7 "A new correlation for instantaneous heat transfer between gas and cylinder in reciprocating compressors" 2 : 871-876, 1998