suction gas superheating, heat transfer correlation, suction muffler
The efficiency and reliability of hermetic reciprocating compressors adopted for household refrigeration are affectedÂ by the temperature distribution of their components. Simulation models developed to assist the thermal design ofÂ compressors require heat transfer coefficients in different components, usually estimated from correlations availableÂ for simplified geometries. However, the geometries of some components are complex and require more representativeÂ heat transfer coefficients. This paper presents experimental results for heat transfer coefficients obtained from measurements of heat flux and temperature in different regions of the suction muffler of a small reciprocatingÂ compressor under different operating conditions. A least square method was employed to obtain correlations for localÂ heat transfer coefficients, which were then compared with estimates given by correlations available in the literatureÂ for simplified geometries.