通风机流量测量不确定度评定

Uncertainty Assessment of Mine Fan Flowrate Measurement

在用标准化风道进行通风机气动性能试验条件下,采用锥形进口测定流量时,根据标准对试验装置的要求,提出了通风机流量测量不确定度的评定方法,并通过测量实例进行了评定。为正确评定通风机流量测量不确定度、提高通风机试验准确度寻找科学依据。

In this paper the author puts forward the assessment method of uncertainty in fan's flowrate measurement according to the standard requirements for the test device when fan's flowrate is measured with a conical inlet under the test conditions of fan's aerodynamic performance in a standardized air tunnel. Assessment was conducted through some measurement examples. Thus, this will provide basis for the correct assessment of uncertainty of fan's flowrate measurement and the improvement of the accuracy degree of fan test.