Coal Temperature Variation Mechanism during Gas Desorption Process
Joint Authors
Ye, Q. S.
Yang, T.
Nie, B. S.
Chen, P.
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-08
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
To further reveal the mechanism of coal gas migration, the reasons for coal temperature changes during the methane desorption process were analyzed from the aspect of molecular motion and the thermodynamic theory.
The temperature change mechanism was investigated, and the mathematical equation was established to describe the variation of temperature change during the methane desorption and diffusion process.
The established equation was applied for the calculation of temperature change for two types of coal samples, and the measured and theoretical values of temperature changes were obtained.
The results show that the temperature changes in the coal gas desorption process are mainly caused by the heat adsorption.
The heat adsorption phenomenon was also caused by free gas expansion during the pressure relief process.
The gas diffusion and work done for gas seepage also need heat adsorption.
The temperature change is positively correlated to the coal gas pressure, quantity, and limit value of gas desorption volume.
Due to the poor insulation in the test system, the difference between the theoretical and the measured temperature change values increase with the adsorption equilibrium pressure.
It is helpful to further reveal the mechanism of coal and gas outburst.
It also has an important reference value for controlling gas dynamic disasters in coal mines.
American Psychological Association (APA)
Yang, T.& Nie, B. S.& Ye, Q. S.& Chen, P.. 2018. Coal Temperature Variation Mechanism during Gas Desorption Process. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1116720
Modern Language Association (MLA)
Yang, T.…[et al.]. Coal Temperature Variation Mechanism during Gas Desorption Process. Advances in Civil Engineering No. 2018 (2018), pp.1-7.
https://search.emarefa.net/detail/BIM-1116720
American Medical Association (AMA)
Yang, T.& Nie, B. S.& Ye, Q. S.& Chen, P.. Coal Temperature Variation Mechanism during Gas Desorption Process. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1116720
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116720