【摘要】 直接空冷电厂的安全运行与空冷凝汽器在冬季自然通风条件下的换热性能有着密切的联系。依托实际工程项目,确定了某135MW直接空冷凝汽器(ACC)冬季自然通风下的热压。利用计算传热学(NHT)软件FLUENT,对不同迎面风速下,直接空冷凝汽器双排管换热元件的冬季性能进行了数值模拟、分析和研究。根据空气的作用压力与流经空冷凝汽器时所产生阻力之间的对应关系,确定了冬季自然通风状态下空冷凝汽器性能。它为直接空冷系统的优化设计提供帮助。更多还原

【Abstract】 The safe operation of the direct air cooled power plant has close relationship with the heat transfer performance of air cooled condenser(ACC) in winter under natural Draft.Based on actual project,the thermal pressure of direct air cooled condenser in a 135MW power plant under natural Draft is determined.Using the numerical heat transfer(NHT) software called fluent,the thermal performance double row tube of air cooled condenser under different frontal air velocity is simulated,analyzed and studied.Using the matching law between the air operation force and pressure loss caused by the ACC when the air passing through,the performances of direct air cooled condenser under winter natural Draft can be determined.It offers good help for the optimal design of direct air cooling system.更多还原