Abstract
A theoretical model for horizontal tubes was proposed to analyze heat transfer performance of the condenser with liquid-vapor separation device in this paper. The model was on basis of convection boundary condition and effects of gravity and shear force to express the feature of the condensing film growth inside a horizontal smooth circular tube. In order to validate the model, a set of relevant experiments were carried out to gauge the heat transfer coefficients of condensers with liquid-vapor separation device. The predicted heat transfer coefficients showed a nice agreement with these experimental results. The refrigerant circuitry of a condenser with liquid-vapor separation device was designed according to the principle of equal mass flux with predicted results. Besides, the heat transfer performance of a condenser unit with liquid-vapor separation device in actual operating condition was calculated and analyzed. The influences of refrigerant vapor mass flux and saturation temperature on the performance were investigated and the enhancement of the liquid-vapor separation device on heat transfer was verified.
Published Version
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