Study on the Protection Effect of Sprinklers on Glass by Fire Scale in Building Fires
Window sprinklers are commonly used to protect glass, but there is a lack of research on the effect of fire scale on protection. In this study, full-scale experiments on sprinkler-protected glass in building fires were carried out. The experimental process was simulated using CFD numerical simulatio...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Fire |
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| Online Access: | https://www.mdpi.com/2571-6255/5/4/100 |
| _version_ | 1797410387779387392 |
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| author | Jia Gui Dong Wang Yaqiang Jiang Junjun Liu Lizhong Yang |
| author_facet | Jia Gui Dong Wang Yaqiang Jiang Junjun Liu Lizhong Yang |
| author_sort | Jia Gui |
| collection | DOAJ |
| description | Window sprinklers are commonly used to protect glass, but there is a lack of research on the effect of fire scale on protection. In this study, full-scale experiments on sprinkler-protected glass in building fires were carried out. The experimental process was simulated using CFD numerical simulation software (FDS), and the effect of the heat release rate on the protection effect was revealed based on the glass surface temperature and heat insulation efficiency. It was found that in a full-size compartment fire, the window sprinkler was able to protect the glass from being damaged by high-temperature smoke. The numerical simulation could effectively simulate the spray distribution pattern of a window sprinkler as well as the gas temperature evolution, and the simulation results matched well with the full-size experiments. The window surface temperatures all decreased rapidly and increased linearly with the HRR after the window sprinkler was activated. The steady-state window center temperatures were 40 °C, 60 °C and 76 °C when the HRR was 2 MW, 4 MW and 6 MW, respectively. The window center temperature was less than the critical temperature of glass breakage, indicating that the window sprinkler could protect the glass from fire damage well, within the fire scale of 6 MW. The thermal insulation efficiency in the edge region was slightly lower than that in the center of the window. In the range of 2 to 6 MW, there was no significant correlation between the thermal insulation efficiency and the HRR, and the thermal insulation efficiency was in the range of 54% to 59%. |
| first_indexed | 2024-03-09T04:29:14Z |
| format | Article |
| id | doaj.art-def89ff493eb4591a19f10dc3a0dddfa |
| institution | Directory Open Access Journal |
| issn | 2571-6255 |
| language | English |
| last_indexed | 2024-03-09T04:29:14Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fire |
| spelling | doaj.art-def89ff493eb4591a19f10dc3a0dddfa2023-12-03T13:38:17ZengMDPI AGFire2571-62552022-07-015410010.3390/fire5040100Study on the Protection Effect of Sprinklers on Glass by Fire Scale in Building FiresJia Gui0Dong Wang1Yaqiang Jiang2Junjun Liu3Lizhong Yang4State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, ChinaState Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, ChinaSichuan Fire Research Institute of MEM, Chengdu 610036, ChinaSichuan Fire Research Institute of MEM, Chengdu 610036, ChinaState Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, ChinaWindow sprinklers are commonly used to protect glass, but there is a lack of research on the effect of fire scale on protection. In this study, full-scale experiments on sprinkler-protected glass in building fires were carried out. The experimental process was simulated using CFD numerical simulation software (FDS), and the effect of the heat release rate on the protection effect was revealed based on the glass surface temperature and heat insulation efficiency. It was found that in a full-size compartment fire, the window sprinkler was able to protect the glass from being damaged by high-temperature smoke. The numerical simulation could effectively simulate the spray distribution pattern of a window sprinkler as well as the gas temperature evolution, and the simulation results matched well with the full-size experiments. The window surface temperatures all decreased rapidly and increased linearly with the HRR after the window sprinkler was activated. The steady-state window center temperatures were 40 °C, 60 °C and 76 °C when the HRR was 2 MW, 4 MW and 6 MW, respectively. The window center temperature was less than the critical temperature of glass breakage, indicating that the window sprinkler could protect the glass from fire damage well, within the fire scale of 6 MW. The thermal insulation efficiency in the edge region was slightly lower than that in the center of the window. In the range of 2 to 6 MW, there was no significant correlation between the thermal insulation efficiency and the HRR, and the thermal insulation efficiency was in the range of 54% to 59%.https://www.mdpi.com/2571-6255/5/4/100building firefire sizenumerical simulationsprinkler systemglass protection |
| spellingShingle | Jia Gui Dong Wang Yaqiang Jiang Junjun Liu Lizhong Yang Study on the Protection Effect of Sprinklers on Glass by Fire Scale in Building Fires Fire building fire fire size numerical simulation sprinkler system glass protection |
| title | Study on the Protection Effect of Sprinklers on Glass by Fire Scale in Building Fires |
| title_full | Study on the Protection Effect of Sprinklers on Glass by Fire Scale in Building Fires |
| title_fullStr | Study on the Protection Effect of Sprinklers on Glass by Fire Scale in Building Fires |
| title_full_unstemmed | Study on the Protection Effect of Sprinklers on Glass by Fire Scale in Building Fires |
| title_short | Study on the Protection Effect of Sprinklers on Glass by Fire Scale in Building Fires |
| title_sort | study on the protection effect of sprinklers on glass by fire scale in building fires |
| topic | building fire fire size numerical simulation sprinkler system glass protection |
| url | https://www.mdpi.com/2571-6255/5/4/100 |
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