直接空冷系统冬季防冻问题研究

Research on Anti-freezing of Air-cooling Condenser System in Winter

冬季直接空冷系统面临的一个最为严重的问题是凝汽器管束发生冻结,在环境温度低于0℃时,直接空冷凝汽器翅片管内饱和蒸汽热负荷与翅片管冷却能力不平衡是导致直接空冷凝汽器的管束发生冻结的主要因素,而不凝气体的聚集则加剧冻结。控制蒸汽流量与冷却空气流量、避免不凝气体的聚集能够避免凝汽器冻结的发生。

The most serious question for Directed Air-Cooled Condenser in winter is the freezing of tube bundle. The imbalance of saturated steam heat load and cooling capacity is the main factors which result in the freezing of tube bundle. And the gathering of the non-condensable gas will increase this process. Controlling the steam flow and the cooling air flow rate and to avoid the gathering of the non - condensable gas will prevent the freezing of air-cooled condenser.