Research on Evaporation Heat Transfer Performance of Refrigerant R410A in Plate and Shell Heat Exchanger
The evaporation heat transfer properties of refrigerant R410A in a plate and shell heat exchanger were investigated experimentally,and the effects of saturation temperature,mass flow rate,and average vapor qualities on the evaporation heat transfer coefficient and two-phase frictional pressure drop were analyzed.The experimental data were compared with existing correlations,and the correlations of Nussel number and friction factor of R410A in plate and shell heat exchanger is obtained by fitting.The results show that the evaporation heat transfer coefficient of R410A increases and then decreases with increasing average vapor qualities,increases with increasing mass flow rate,and decreases with increasing saturation temperature.The two-phase frictional pressure drop increases with average vapor qualities and mass flow rate and decreases with saturation temperature.The average error absolute value between the experimental values and the calculated values of the evaporation heat transfer coefficient is 3.78％,while the friction factor is 4.08％.
plate and shell heat exchangerrefrigerantevaporationheat transfer coefficientfrictional pressure dropcorrelation
万方数据
维普
