Citation

Yang S, Wang J, Wang L, Zhang H, Zhao L. China Saf. Sci. J. 2022; 32(3): 131-136.

Copyright

(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2022.03.018

PMID

unavailable

Abstract

In order to make a quantitative analysis on gas composition, response signals of pressure drop generated by gas samples were measured after they flew through a specially designed viscosity sensor. Then, according to Poiseuille's Law and theoretical model of gas mixture viscosity, quantitative analysis was conducted to obtain concentration of combustible gas, and measurement experiments were carried out for different concentration of hydrogen. The results show that concentration of gas samples can be calculated by utilizing measured pressure drop based on theoretical relationship of mixed gas viscosity, and the absolute deviation between measurement results and benchmark concentration are no more than ±1.0%. And the relative error is no more than ±3% when volume fraction is over 15%. It has been proved by the quantitative test results that the proposed method has a high accuracy and is capable of predicting volume fraction of combustible gas accurately. © 2022 China Safety Science Journal. All rights reserved.

Language: zh