Research on the Variation Law of the Tube´s Inside-Wall Temperature of Direct Air-Cooled Condenser

Under low temperature in winter, the direct air-cooled condenser will freeze when the inside wall temperature of some regions comes up to freezing point. Based on the established models, this paper has studied the influencing rules of different factors to the tube´s inside wall temperature, such as the fan speed, the turbine exhaust steam flow rate, the ambient temperature and the content of the non-condensable gas. The results will pave the way for optimization measures of anti-freezing in the direct air-cooled condenser.