Numerical Simulation of Heat Transfer Process for R1234yf in Plate Evaporative Condenser
By establishing a two-dimensional mathematical model of the plate evaporative condenser,the heat exchange process of the new refrigerant R1234yf in the plate evaporative condenser is simulated,and the distribution of cooling water temperature,air humidity,and refrigerant temperature in the plate evaporative condenser is summarized.The results show that,the heat transfer capacity of the plate evaporative condenser increases with the increase of the condensation temperature,decreases with the increase of the air wet bulb temperature,and first increases and then decreases with the increase of the falling film Reynolds number.When the condensing temperature changes from 41℃to 45℃,the heat flux of plate evaporative condenser increases by 16.2%.When the wet bulb temperature increases from 21℃to 26℃,the heat flux of plate evaporative condenser decreases by 14.6%.When the falling film Reynolds number changes from 60 to 120,the maximum change rate of heat flux density of plate evaporative condenser is 6.06%.
R1234yfPlate evaporative condenserHeat and mass transferNumerical simulation
万方数据
维普
