Field Test and Research on Heat-transfer Performance of Plate Air-cooled Condenser

Based on field test data, the performance of plate air-cooled condenser unit is studied and simulated using CFD software, and numerical results agree well with actual data. Then with VAV (variable air volume) numerical simulation, the correlation formula between Nusselt number and Reynolds number is acquired. And with numerical simulation of variable surrounding DB (dry bulb) temperature, the outlet air temperature is shown linear to the surrounding. When surrounding temperature gets 34.2 °C, the outlet reaches 69 °C. That high surrounding temperature could reduce output of condenser. Aiming at the problem of condenser output limit, the spray humidification system is presented here to reduce inlet air temperature. Then temperature drops of different contact factors are studied, and results show the higher surrounding temperature, the bigger temperature drop, which means spray humidification system could reduce inlet air temperature effectively, especially in high surrounding temperature.