示踪气体法测量空气交换率的不确定度估算。

Estimation of uncertainty in tracer gas measurement of air change rates.

机构信息

Research Center for Sustainable Science and Engineering, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Sendai, Miyagi 980-8577, Japan.

出版信息

Int J Environ Res Public Health. 2010 Dec;7(12):4238-49. doi: 10.3390/ijerph7124238. Epub 2010 Dec 16.

DOI:10.3390/ijerph7124238

PMID:21318005

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3037051/

Abstract

Simple and economical measurement of air change rates can be achieved with a passive-type tracer gas doser and sampler. However, this is made more complex by the fact many buildings are not a single fully mixed zone. This means many measurements are required to obtain information on ventilation conditions. In this study, we evaluated the uncertainty of tracer gas measurement of air change rate in n completely mixed zones. A single measurement with one tracer gas could be used to simply estimate the air change rate when n = 2. Accurate air change rates could not be obtained for n ≥ 2 due to a lack of information. However, the proposed method can be used to estimate an air change rate with an accuracy of <33%. Using this method, overestimation of air change rate can be avoided. The proposed estimation method will be useful in practical ventilation measurements.

摘要

采用被动式示踪气体注入器和采样器可以简单、经济地测量空气交换率。但是，由于许多建筑物不是单一的完全混合区，这使得情况变得更加复杂。这意味着需要进行多次测量才能获得通风条件的信息。在这项研究中，我们评估了在 n 个完全混合区域中使用示踪气体测量空气交换率的不确定度。当 n = 2 时，单次使用一种示踪气体的测量可以简单地估计空气交换率。由于信息不足，无法获得 n ≥ 2 的准确空气交换率。然而，该方法可用于估计空气交换率，精度可达<33%。使用该方法可以避免对空气交换率的高估。该估计方法在实际通风测量中将会很有用。