INCREASING THE EFFICIENCY OF HEAT REMOVAL FROM AIR STEAM CONDENSERS

This paper presents the results of experimental studies of an air-cooled condenser (ACC) with a cooling air moisturizing system at the inlet to its heat exchange surface. Tests have been conducted with various flow rates of cooling air with no water supply to the moisturizing nozzle, with various water flow rates to the moisturizing nozzle with cooling air constant flow rate, and with various cooling air flow rates with constant water flow rate to the moisturizing nozzle. Cross-plots have been provided for the amount of heat taken from the ACC heat exchange surface and the amount of water supplied to the moisturizing nozzle and cooling air flow rate. It has been shown that supplying water at 22 g/s to the moisturizing nozzle results in an increased coefficient of heat transfer of the ACC model for more than 75% as compared to the dry heat exchange surface at moderate ambient air temperatures. Using the cooling air moisturizing system, when it is above 30 °C and has the same relative humidity, will give a higher effect.