摘要
目前测量风量的方法有风速仪法和风量罩法,风量罩因其使用的简便快捷,已越来越多被人们了解和使用。但对测量方法是否正确,读出来的数值是否合适,罩体形状与风口尺寸是否匹配,位置摆放是否合理,是否需要修正等并不多加考虑,这势必造成测量的不准确。本文将针对市场上常用的几种风量罩体进行实验,说明罩体的选择及不同摆放位置对测量的影响。
Anemometer and flow hood are used to measure air volume at present,flow hood is known and used by more and more people because its simple and convenient usage.But some factors are not taken into consideration such as the validity of the measuring method,the rightness of the indicated number,the matching of flow hood shape with the dimension of air port as well as the placed position and whether revise is needed.This leads to the measurement inaccuracy.This paper considered some frequently-used flow hood on market and illustrated the influence of the choice of flow hood and the placed position.
出处
《低温建筑技术》
2012年第2期106-108,共3页
Low Temperature Architecture Technology
关键词
风量罩
风量
误差
摆放位置
flow hood
air volume
error
placed position
