采用数值与物理风洞确定烟塔合一类项目环境防护距离  

Buffer Zone of Natural Draft Cooling Towers (NDCT) with Flue Gas Injection by Numerical Wind Tunnel and Physical Wind Tunnel

作　　者：朱明奕 张晓旭[2,3,4] 李志强[2,3,4] 吴岳[2,3,4] 刘玲[2,3,4] 李雨蒙[2,3,4] 

机构地区：[1]天津市环境工程评估中心,天津300191 [2]天津市环境保护科学研究院,天津300191 [3]天津市大气污染防治重点实验室,天津300191 [4]天津环科瞻云科技发展有限公司,天津300191

出　　处：《环境影响评价》2017年第4期57-59,65,共4页Environmental Impact Assessment

基　　金：天津市环境保护科学研究院院长基金资助项目(YZJJ-2015-005);天津市环境保护科学研究院院长基金资助项目(YZJJ-2015-001);天津市自然科学基金应用基础重点项目(13JCZDJC36100)

摘　　要：烟塔合一排烟方式具有很多独特的优势。由于该排烟方式原理较为复杂,所以很难确定烟塔合一类项目的环境防护距离。研究采用数值风洞与物理风洞方法预测冷却塔下风向空腔区范围,同时采用数值风洞预测冷却塔下风向酸沉降范围。预测结果表明,采用数值风洞与物理风洞方法所预测的冷却塔空腔区范围基本一致,数值风洞预测的酸沉降范围小于空腔区范围,可以根据空腔区范围确定烟塔合一防护距离。因此,采用数值风洞与物理风洞两种模式预测冷却塔空腔区的范围是必要且可行的,可以为烟塔合一类项目环境防护距离的制定提供依据。Natural Draft Cooling Towers （NDCT） with flue gas injection has many unique advantages, but due to its complexity, it is difficult to identify its buffer zone. In this paper, the area of cavity near the cooling towers is studied by numerical wind tunnel and physical wind tunnel, and the area of acid deposition is predicted by the numerical wind tunnel as well. Results showed that the precipitation areas of two modes were almost the same, while the area of acid deposition was usually smaller than that of cavity. Therefore, the study concludes that it is necessary and feasible to predict the air cavity of cooling towers by both the two tunnels. The study can provide references for identifying the buffer zone of NDCT.

关 键 词：烟塔合一 数值风洞 物理风洞 环境防护距离 

分 类 号：X773[环境科学与工程—环境工程]