电厂取排水口温升特性影响因素分析

鉴于电厂温排水扩散关系到热污染等水环境问题及电厂发电效率等经济问题,建立了温排水小变率物理模型试验,在模型验证良好的基础上,对比分析了不同潮型、不同季节因素和不同的排水口结构尺寸对取排水口附近温升扩散范围和温升变化过程的影响。试验结果表明,受到涨落潮过程的影响,温升分布范围以西北和东南向为主,高温区温升包络线集中在排水口附近。在温排水的扩散能力方面,大潮优于小潮,夏季优于冬季,窄型排水口优于宽型。分析结果可为电厂的取排水工程设计提供依据。

Analysis of Influencing Factors on Temperature Rise Characteristics of Water Intake and Outlet of Power Plant

Thermal discharge of power plant concerns not only the environmental problems like thermal pollution but also economic issues like efficiency of electricity generating. In this paper, on the basis of setting up a physical mode, temperature rise diffusion and the process of temperature rise by the effect of the different tidal, season and size of water outlet were compared and analyzed. The results show that affected by the tidal process, temperature rise largely distributed on the northwest and southeast, and the high temperature area concentrated near the water outlet. For diffusion capacity of thermal discharge, spring tide, summer and narrow water outlet showed an advantage over neap, winter and wide water outlet respectively. This study can provide a scientific basis for water intake and outlet of power plant structure design.