电站循环冷却水排放温度对环境影响与经济效益分析

针对燃煤电站EPC项目国际招标中为保护环境,限定循环冷却水排放温度上限值问题,通过对循环水取水温度和汽轮机冷端损失的剖析,阐明了直流式循环冷却水排放对水源环境的影响是由于机组冷端损失引起的,循环水温升大小对周围水源温度场范围基本没有影响。进而对凝汽器优化设计与效益进行了论述分析,指出方案设计应尽量取用较低温水源,并优化凝汽器温升和循环冷却水量,以期减小EPC项目成本和获得较好机组性能。

Condenser Optimization in Steam Power Plant

In this paper the effects of the condenser design parameters(such as turbine inlet condition.turbine power and condenser pressure) on heat transfer area,cooling water flow-rate.condenser cost and specific energy generation cost are studied for surface type condenser.The results are given in the text and also shown as diagrams.