Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine Fires
The application of liquid nitrogen injection is an important technique in the field of coal mine fire prevention. However, the mechanism of heat and mass transfer of cryogenic nitrogen in the goaf porous medium has not been well accessed. Hence, the implementation of fire prevention engineering of l...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/293142 |
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| author | Bobo Shi Fubao Zhou |
| author_facet | Bobo Shi Fubao Zhou |
| author_sort | Bobo Shi |
| collection | DOAJ |
| description | The application of liquid nitrogen injection is an important technique in the field of coal mine fire prevention. However, the mechanism of heat and mass transfer of cryogenic nitrogen in the goaf porous medium has not been well accessed. Hence, the implementation of fire prevention engineering of liquid nitrogen roughly relied on an empirical view. According to the research gap in this respect, an experimental study on the heat and mass transfer of liquid nitrogen in coal porous media was proposed. Overall, the main mechanism of liquid nitrogen fire prevention technology in the coal mine is the creation of an inert and cryogenic atmosphere. Cryogenic nitrogen gas vapor cloud, heavier than the air, would cause the phenomenon of “gravity settling” in porous media firstly. The cryogen could be applicable to diverse types of fires, both in the openings and in the enclosures. Implementation of liquid nitrogen open-injection technique in Yangchangwan colliery achieved the goals of fire prevention and air-cooling. Meanwhile, this study can also provide an essential reference for the research on heat and mass transfer in porous media in the field of thermal physics and engineering. |
| format | Article |
| id | doaj-art-6a94027fb7c641dc9bc93407874aea3e |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-6a94027fb7c641dc9bc93407874aea3e2025-08-20T03:33:41ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/293142293142Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine FiresBobo Shi0Fubao Zhou1School of Safety Engineering, China University of Mining and Technology (CUMT), Xuzhou 221116, ChinaSchool of Safety Engineering, China University of Mining and Technology (CUMT), Xuzhou 221116, ChinaThe application of liquid nitrogen injection is an important technique in the field of coal mine fire prevention. However, the mechanism of heat and mass transfer of cryogenic nitrogen in the goaf porous medium has not been well accessed. Hence, the implementation of fire prevention engineering of liquid nitrogen roughly relied on an empirical view. According to the research gap in this respect, an experimental study on the heat and mass transfer of liquid nitrogen in coal porous media was proposed. Overall, the main mechanism of liquid nitrogen fire prevention technology in the coal mine is the creation of an inert and cryogenic atmosphere. Cryogenic nitrogen gas vapor cloud, heavier than the air, would cause the phenomenon of “gravity settling” in porous media firstly. The cryogen could be applicable to diverse types of fires, both in the openings and in the enclosures. Implementation of liquid nitrogen open-injection technique in Yangchangwan colliery achieved the goals of fire prevention and air-cooling. Meanwhile, this study can also provide an essential reference for the research on heat and mass transfer in porous media in the field of thermal physics and engineering.http://dx.doi.org/10.1155/2014/293142 |
| spellingShingle | Bobo Shi Fubao Zhou Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine Fires The Scientific World Journal |
| title | Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine Fires |
| title_full | Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine Fires |
| title_fullStr | Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine Fires |
| title_full_unstemmed | Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine Fires |
| title_short | Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine Fires |
| title_sort | impact of heat and mass transfer during the transport of nitrogen in coal porous media on coal mine fires |
| url | http://dx.doi.org/10.1155/2014/293142 |
| work_keys_str_mv | AT boboshi impactofheatandmasstransferduringthetransportofnitrogenincoalporousmediaoncoalminefires AT fubaozhou impactofheatandmasstransferduringthetransportofnitrogenincoalporousmediaoncoalminefires |