SACTI模型在核电厂大型自然通风冷却塔对局地环境影响预测评价中的应用

Application of SACTI Model in Environmental Impact Prediction and Assessment of NPP's Large Scale Natural Draft Cooling Tower

大型自然通风冷却塔造成的荫屏、太阳辐射损失、水沉积和盐沉积等环境影响已逐渐成为当前国内研究的热点。由于国内目前尚未有已建成的核电厂大型自然通风冷却塔,所以利用预测模型研究大型自然通风冷却塔的环境影响成为当前的一个关注点。首先介绍了美国Argonne国家实验室开发的冷却塔评价模型SACTI的基本原理和结构组成,以江西彭泽核电厂为例,与美国Amos电厂的预测结果进行比较分析,说明了SACTI模型在实际工作中的应用及影响其计算结果的主要因素。结果表明,在缺乏监测数据的情况下,SACTI模型的模拟结果具有重要的参考意义,同时本文的研究成果为深入开展该项研究工作提供了有意义的基础。

The environmental impacts caused by the large scale natural draft cooling tower such as shadowing, solar energy loss, water deposition and salt deposition has become a popular subject of research in China. As there is no large scale natural draft cooling tower in nuclear power plant built in China yet, model prediction thusly becomes a common method to solve this problem. This paper presents basic principles and structure of SACTI model, from which the simulation results derived of China Pengze NPP and US Amos Power Plant is compared then demonstrating its practical application and main factors affecting the results. Conclusions show that simulation results of SACTI model have a great potential when lack input of monitoring data, this research work will provide reference to future research.