所属单位：

建筑设备科学与工程学院

发表刊物：

Building and Environment

关键字：

中文关键字：捕集效率;工业通风;缩尺试验;温度场;热分层高度;速度场，英文关键字：Capture efficiency;Industrial ventilation;Reduced-

摘要：

Local ventilation systems are widely used in industrial production processes to capture heat release and/or gaseous/particulate contaminants. The primary objective of this study was to determine important empirical factors on local pollutant capture efficiency and characteristics of thermal stratification in the working areas of industrial plants. Investigated factors were confined airflow boundaries, flow rates of the exhaust hoods, source strengths, airflow obstacles and distances between sources and exhaust hoods. Reduced-scale experiments were conducted with a geometric scale of 1:15 corresponding to a portion of the blast furnace workshop of a steel plant. The dependency of capture efficiency on Archimedes numbers was established. The results showed that confined airflow boundaries, flow rates of the exhaust hoods and source strengths were important empirical factors on pollutant capture efficiency. Hood performance was also evaluated by thermal stratification heights in the plants. This study could help improve the capture efficiency of local ventilation systems used in industrial plants. Safe operation heights are recommended in the upper space of industrial plants based on the thermal stratification in the plants.

备注：

王怡

合写作者：

刘荔,NielsenPeterV.,JensenRasmusL.,闫翻辽

第一作者：

王怡[重名-待确认],黄艳秋

论文类型：

期刊论文

卷号：

卷：85

期号：

期：

页面范围：

页：94-103

是否译文：

否

发表时间：

2015-04-01