Gas detection and identification method based on viscosity characteristic

Fire Science and Technology ›› 2020, Vol. 39 ›› Issue (2): 243-247.

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Gas detection and identification method based on viscosity characteristic

YANG Song-cheng1, BAO Yu-peng2,ZHAO Lan-ming1,2

(1. School of Chemical Engineering, Jiangsu Ocean University, Jiangsu Lianyungang 222000, China; 2. State Key Laboratory of Fire Science, University of Science and Technology of China, Anhui Hefei 230026, China)

Received:2019-09-23 Online:2020-02-15 Published:2020-02-15

Abstract

Abstract: A gas component detection method based on differential pressure principle was proposed. By measuring the differential pressure signal response of the gas to be measured after passing through the special viscosity sensor, the gas viscosity data can be obtained through conversion. The gas composition can be obtained by inversion according to the quantitative relationship based on Poiseuille's law and the viscosity theory of mixed gas. The experimental results proved the feasibility of gas recognition using viscosity in theory and practice. Verification tests based on flowrate reference value and linear equation slope were carried out. Results showed that both two methods are effective ways to accurately identify the 4 unknown gas samples.

Key words: gas viscosity, gas identification, fire detection, Poiseuille's law

YANG Song-cheng, BAO Yu-peng, ZHAO Lan-ming, . Gas detection and identification method based on viscosity characteristic[J]. Fire Science and Technology, 2020, 39(2): 243-247.

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Gas detection and identification method based on viscosity characteristic

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