空冷机组混合冷却的综合应用及发展前景

为降低空冷机组的煤耗,介绍了混合冷却综合应用的思路与技术要点。通过使用辅助冷却设备,夏季可增大空冷岛的散热面积,解决空冷机组夏季运行经济性差、背压高而限负荷的问题;在冬季,结合空冷机组高背压运行的特点,可实现乏汽供热,提高热电联产的效率。提出在不同环境、不同资源特点下,开展多种技术综合应用,实现分区域、分阶段、有针对性的节能优化。并以湿冷尖峰冷却器、蒸发式冷却器和热泵为例,介绍混合冷却综合应用的具体实施方案。

Comprehensive Application and Prospect of Hybrid Cooling for Air-Cooled Units

To lower coal consumption of air-cooled units, the idea and technical points of hybrid cooling are introduced. By adopting auxiliary cooling equipment, the radiating area of the air-cooling island is increased to solve the problems of poor unit economics and load limitation due to high back pressure in summer; while in high back-pressure operation in winter, exhaust steam heating can be realized so that the efficiency of cogeneration is improved. Optimization on energy saving with multiple technologies accommodating local conditions and local resources is suggested. In addition, taking the wet peak cooler, the evaporative cooler and the heat pump for example, detailed implementation schemes on comprehensive application of hybrid cooling are presented.