Reference Test Method for Calculating the Thermal Effect of Coal Spontaneous Combustion
During a heating experiment, there are two sources of heat that increase the temperature of a coal sample: the heat released by the oxidation reaction of the coal itself, and the heat provided by the experimental system. Here, we propose a method for measuring the thermal effect of oxidation and sel...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/20/7707 |
| _version_ | 1797473532823732224 |
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| author | Wenyong Liu Wenzhao Zhang Shuai Ma Ze Zhang |
| author_facet | Wenyong Liu Wenzhao Zhang Shuai Ma Ze Zhang |
| author_sort | Wenyong Liu |
| collection | DOAJ |
| description | During a heating experiment, there are two sources of heat that increase the temperature of a coal sample: the heat released by the oxidation reaction of the coal itself, and the heat provided by the experimental system. Here, we propose a method for measuring the thermal effect of oxidation and self-ignition through a reference experiment conducted with a material that is physically similar to coal but does not combust. The reference material used was an aggregate of alumina, fly ash, and concrete, and experiments were conducted on both materials simultaneously. The temperature of the coal sample was obtained under self-heating conditions, and compared with that of the non-combusting material. The relationship of temperature as a function of time for both materials was determined from the data, the comparison of which allowed for the thermal effect of oxidation and coal spontaneous combustion (CSC) to be calculated. The reliability of the thermal effect data obtained by the experiment was verified by chemical bond energy estimation. These results provide theoretical guidance for on-site fire prevention and extinguishing in coal mines, and are important for the further development of the understanding of CSC. |
| first_indexed | 2024-03-09T20:16:48Z |
| format | Article |
| id | doaj.art-b75c245c4c97432f8075c04b86f33213 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T20:16:48Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b75c245c4c97432f8075c04b86f332132023-11-23T23:59:17ZengMDPI AGEnergies1996-10732022-10-011520770710.3390/en15207707Reference Test Method for Calculating the Thermal Effect of Coal Spontaneous CombustionWenyong Liu0Wenzhao Zhang1Shuai Ma2Ze Zhang3College of Safety and Engineering, Xi’an University of Science and Technology, Xi’an 710054, ChinaXi’an Tianhe Mining Technology Co., Ltd., Xi’an 710054, ChinaCollege of Safety and Engineering, Xi’an University of Science and Technology, Xi’an 710054, ChinaXi’an Tianhe Mining Technology Co., Ltd., Xi’an 710054, ChinaDuring a heating experiment, there are two sources of heat that increase the temperature of a coal sample: the heat released by the oxidation reaction of the coal itself, and the heat provided by the experimental system. Here, we propose a method for measuring the thermal effect of oxidation and self-ignition through a reference experiment conducted with a material that is physically similar to coal but does not combust. The reference material used was an aggregate of alumina, fly ash, and concrete, and experiments were conducted on both materials simultaneously. The temperature of the coal sample was obtained under self-heating conditions, and compared with that of the non-combusting material. The relationship of temperature as a function of time for both materials was determined from the data, the comparison of which allowed for the thermal effect of oxidation and coal spontaneous combustion (CSC) to be calculated. The reliability of the thermal effect data obtained by the experiment was verified by chemical bond energy estimation. These results provide theoretical guidance for on-site fire prevention and extinguishing in coal mines, and are important for the further development of the understanding of CSC.https://www.mdpi.com/1996-1073/15/20/7707coal spontaneous combustionoxidation heat effectphysical similarity reference testpositive temperature difference leadingheating rate |
| spellingShingle | Wenyong Liu Wenzhao Zhang Shuai Ma Ze Zhang Reference Test Method for Calculating the Thermal Effect of Coal Spontaneous Combustion Energies coal spontaneous combustion oxidation heat effect physical similarity reference test positive temperature difference leading heating rate |
| title | Reference Test Method for Calculating the Thermal Effect of Coal Spontaneous Combustion |
| title_full | Reference Test Method for Calculating the Thermal Effect of Coal Spontaneous Combustion |
| title_fullStr | Reference Test Method for Calculating the Thermal Effect of Coal Spontaneous Combustion |
| title_full_unstemmed | Reference Test Method for Calculating the Thermal Effect of Coal Spontaneous Combustion |
| title_short | Reference Test Method for Calculating the Thermal Effect of Coal Spontaneous Combustion |
| title_sort | reference test method for calculating the thermal effect of coal spontaneous combustion |
| topic | coal spontaneous combustion oxidation heat effect physical similarity reference test positive temperature difference leading heating rate |
| url | https://www.mdpi.com/1996-1073/15/20/7707 |
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