供热方式下SCAL间接空冷系统降低背压运行和防冻的应用实践

Operation Practice of a SCAL Indirect Air Cooling System at Reduced Backpressures in Heating Mode and the Anti-freezing Measures

通过350 MW SCAL间接空冷系统的介绍以及在冬季供热期的运行工况的数据和经验积累,对冬季采取降低背压运行方式和冬季扇区的防冻措施进行了分析。结果表明:SCAL间接空冷系统冬季可以通过有效的防冻措施降低其背压运行,显著提高运行经济性。

An analysis was conducted on the operation mode at reduced backpressures and the antifreezing measures of a 350 MW SCAL indirect air cooling system in winter heating period, based on actual operation data and many years＇ experience. Results show that the SCAL indirect air cooling system can be operated at reduced backpressures in winter by taking effective anti-freezing measures, so as to remarkably improve the operation economy of the unit.