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Evaporative condenser is a heat exchanger equipment , has been widely used in refrigeration , chemical, food and other industries . As evaporative condenser has energy-saving , water-saving , small footprint , and many other advantages , so consider the growing shortage of domestic water and industrial water under the status quo , it has a very good application in thermal power plant steam pump cooling will energy-saving effect and economic benefits , the study also specific significance . Research program to design a set of 1 000MW Direct Air Cooling Units steam pump cooling evaporative condenser . Variable conditions , numerical simulation and calculation methods to study the the evaporative condenser VARIABLE CONDITIONS fluid flow characteristics . First , the use of the thermal calculation method , calculate the amount of small turbine exhaust , evaporative condenser heat transfer tube steam condensation heat transfer coefficient , the heat transfer coefficient between the wall and the water film , water film with pipe outflow the heat transfer coefficient between the air and the mass transfer coefficient , and ultimately determine the heat transfer area , the air pressure drop and fan model . Secondly, for the calculated heat transfer area of the evaporative condenser disposed in heat load in the same case , the steam condensation temperature in the tube and outside the tube of the cooling water spray water influence factors are also considered , and the vARIABLE CONDITIONS analysis . The results show : the temperature of the steam condensate with the air inlet of the wet-bulb temperature increases ; with the amount of water spray , the water film temperature and the wind velocity is reduced ; in the higher air flow velocity , the evaporation of water pass a larger volume . Finally , using the FLUENT software for numerical simulation of evaporative condenser , the effects of the fluid flow characteristics , and to deepen the understanding of the flow characteristics of the evaporative condenser .
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