Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055759
Yalong Wang, Xiao Chen, Shouxiang Lu, Dongfeng Li
The combustion characteristic of commercial bus floor leather with adding the different volume of combustion improver (gasoline) was experimentally investigated in the cone calorimeter. The gasoline ranged from 2mL to 10mL. The influence of the irradiance heat flux on the floor leather combustion characteristics had also been examined, the irradiance intensity ranged from 20kW/m2 to 50 kW/m2. Several parameters such as mass loss, heat release rate and CO production rate were obtained to characterize the combustion behavior of bus floor leather. Results demonstrated that the volume of gasoline can significantly affect the combustion behavior of the fire-retardant bus floor leather sample. The mass loss and peak HRR generally increased with the volume of gasoline, indicating that the more gasoline was added, the faster the sample burned. With the increase of gasoline volume, the combustion of the sample could last for longer time. The duration of relatively high HRR could sustain longer when the dosage of gasoline increased. Insufficient combustion of sample could lead to the release of more CO, application of gasoline could aggravate the CO production to a worse state. In the real bus arson cases, that may trigger more deaths. Even though much attention had been attached to the fire retardant performance of bus interior materials itself, the combustion improver like gasoline should also be taken into consideration due to its effects on the fire characteristics of bus interior materials, so that the deaths can be decreased in arson cases.
{"title":"Experimental Study of the Combustion Characteristic of Commercial Bus Floor Leather with Adding Combustion Improver","authors":"Yalong Wang, Xiao Chen, Shouxiang Lu, Dongfeng Li","doi":"10.1109/ICFSFPE48751.2019.9055759","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055759","url":null,"abstract":"The combustion characteristic of commercial bus floor leather with adding the different volume of combustion improver (gasoline) was experimentally investigated in the cone calorimeter. The gasoline ranged from 2mL to 10mL. The influence of the irradiance heat flux on the floor leather combustion characteristics had also been examined, the irradiance intensity ranged from 20kW/m2 to 50 kW/m2. Several parameters such as mass loss, heat release rate and CO production rate were obtained to characterize the combustion behavior of bus floor leather. Results demonstrated that the volume of gasoline can significantly affect the combustion behavior of the fire-retardant bus floor leather sample. The mass loss and peak HRR generally increased with the volume of gasoline, indicating that the more gasoline was added, the faster the sample burned. With the increase of gasoline volume, the combustion of the sample could last for longer time. The duration of relatively high HRR could sustain longer when the dosage of gasoline increased. Insufficient combustion of sample could lead to the release of more CO, application of gasoline could aggravate the CO production to a worse state. In the real bus arson cases, that may trigger more deaths. Even though much attention had been attached to the fire retardant performance of bus interior materials itself, the combustion improver like gasoline should also be taken into consideration due to its effects on the fire characteristics of bus interior materials, so that the deaths can be decreased in arson cases.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"865 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81635958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055786
Zheng Zhang, Yuanhua He, Yi Wu
The smoke density and gas concentration of FXL aviation cable material were carried out by cone calorimeter, and the smoke production rate (SPR), specific extinction area (SEA), heat release rate (HRR), total smoke production (TSP), smoke parameters (SP), O2, CO and CO2 of gas concentrations were measured respectively. In addition, smoke parameters and toxicity of aviation cables were evaluated according to the experimental results. The experimental results showed that, under the radiation condition of 40-60kW /m2, the SPR of mode 1 and mode2 increased first and then decreased, the TSP were almost unchanged, while the SPR of mode3 and mode4 presented a double-peak phenomenon, and the TSP increased slightly with the radiation intensity. With the increase of radiation intensity, the SEA and SP of mode 1–4 both increased firstly and then declined slowly. and the peak value of them was the largest under the radiation intensity of 50 kW/m2. In addition, the SEA and SP of mode 1 were the smallest, while mode 4 those of were the largest. The CO volumetric concentration of mode 1–4 increased slowly and then decreased with the radiation time. The volumetric concentration of O2 and CO2 varied inversely, and the peak time was approximately 20 seconds apart. In addition, under the radiation condition of 40–60 kW/m2, the peak volume concentration of O2, CO and CO2gradually increased while the corresponding peak-time decreased. The experimental results revealed the smoke characteristics of aviation cable materials under different thermal radiation, and provide data reference for ensuring the safe operation of civil aviation.
{"title":"Experimental Study on Smoke Characteristics of Aviation Cable Material Based on Cone Calorimeter","authors":"Zheng Zhang, Yuanhua He, Yi Wu","doi":"10.1109/ICFSFPE48751.2019.9055786","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055786","url":null,"abstract":"The smoke density and gas concentration of FXL aviation cable material were carried out by cone calorimeter, and the smoke production rate (SPR), specific extinction area (SEA), heat release rate (HRR), total smoke production (TSP), smoke parameters (SP), O2, CO and CO2 of gas concentrations were measured respectively. In addition, smoke parameters and toxicity of aviation cables were evaluated according to the experimental results. The experimental results showed that, under the radiation condition of 40-60kW /m2, the SPR of mode 1 and mode2 increased first and then decreased, the TSP were almost unchanged, while the SPR of mode3 and mode4 presented a double-peak phenomenon, and the TSP increased slightly with the radiation intensity. With the increase of radiation intensity, the SEA and SP of mode 1–4 both increased firstly and then declined slowly. and the peak value of them was the largest under the radiation intensity of 50 kW/m2. In addition, the SEA and SP of mode 1 were the smallest, while mode 4 those of were the largest. The CO volumetric concentration of mode 1–4 increased slowly and then decreased with the radiation time. The volumetric concentration of O2 and CO2 varied inversely, and the peak time was approximately 20 seconds apart. In addition, under the radiation condition of 40–60 kW/m2, the peak volume concentration of O2, CO and CO2gradually increased while the corresponding peak-time decreased. The experimental results revealed the smoke characteristics of aviation cable materials under different thermal radiation, and provide data reference for ensuring the safe operation of civil aviation.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"56 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85048913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055767
Jin-Mei Li, Zhengbing Dong, Qiang Li, Jiaqing Zhang, Yixin Luo
Due to the high altitude, plateau possesses a hyperpiesia and hypoxia environment, its fire behaviors has different characteristics with those of low-lying areas. Through the literature research, this paper was summarized the plateau fire safety research at home and abroad on the directions of flame characteristics in recent years, combustion products and fire spread, looked forward to the development trend of the field and made several research directions.
{"title":"Fuel Combustion Characteristics under Plateau Environment","authors":"Jin-Mei Li, Zhengbing Dong, Qiang Li, Jiaqing Zhang, Yixin Luo","doi":"10.1109/ICFSFPE48751.2019.9055767","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055767","url":null,"abstract":"Due to the high altitude, plateau possesses a hyperpiesia and hypoxia environment, its fire behaviors has different characteristics with those of low-lying areas. Through the literature research, this paper was summarized the plateau fire safety research at home and abroad on the directions of flame characteristics in recent years, combustion products and fire spread, looked forward to the development trend of the field and made several research directions.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"344 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76912351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055774
Linyuan Huang, Changchun Liu, Hua Jiang
In this paper, propane was used as the research object, and the self-built experimental platform was used to study the influence of two different cross-wind directions on the flame characteristics such as the blow-out limit on the rectangular nozzle diffusion flame, flame shape and flame mean length. The experimental results show that when the fuel jet velocity is low, the cross-wind directions has little effect on the flame blow-out limit. As the fuel jet velocity increases, the cross-wind directions has a greater influence on the flame blow-out limit. And when the cross-wind acts vertically on the cross section of the nozzle, the flame tends to be down-wash. When the cross-wind horizontally acts on the cross section of the nozzle, the flame is easy to exhibit the lift-off phenomenon. It is found that the flame length monotonously increases with the increase of the momentum flux ratio of fuel jet to cross-wind when the cross-wind horizontally acts on the nozzle section, but the flame length shows two growth curves with increases of the momentum flux ratio when the cross-wind acts vertically on the nozzle section.
{"title":"Study on Influence of Jet Diffusion Flame Characteristics of Rectangular Nozzles by Cross-wind Flow in Different Directions","authors":"Linyuan Huang, Changchun Liu, Hua Jiang","doi":"10.1109/ICFSFPE48751.2019.9055774","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055774","url":null,"abstract":"In this paper, propane was used as the research object, and the self-built experimental platform was used to study the influence of two different cross-wind directions on the flame characteristics such as the blow-out limit on the rectangular nozzle diffusion flame, flame shape and flame mean length. The experimental results show that when the fuel jet velocity is low, the cross-wind directions has little effect on the flame blow-out limit. As the fuel jet velocity increases, the cross-wind directions has a greater influence on the flame blow-out limit. And when the cross-wind acts vertically on the cross section of the nozzle, the flame tends to be down-wash. When the cross-wind horizontally acts on the cross section of the nozzle, the flame is easy to exhibit the lift-off phenomenon. It is found that the flame length monotonously increases with the increase of the momentum flux ratio of fuel jet to cross-wind when the cross-wind horizontally acts on the nozzle section, but the flame length shows two growth curves with increases of the momentum flux ratio when the cross-wind acts vertically on the nozzle section.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"80 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81118559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055841
Junwei Feng, D. Liang, Hao Shen
Lightning fire is an important causes of forest fire. With the global warming, lightning fire tends to increase. In this paper, the characteristics of a lightning strike wood were investigated. The damage of lightning strike wood can be divided into two forms: linear split and explosion. In addition, the effect of three kinds of ash composition on the soil resistance was measured. The soil containing Agropyron cristatum $(L.)$ Gaertn. ash had the lowest electrical resistance. The impulse voltage generator and impulse current generator were used to measure the breakdown voltage and lightning critical ignition energy of different grass beds. Compared with the other three grass beds, the breakdown voltage of Agropyron cristatum $(L.)$ Gaertn. bed was the smallest. The lightning critical ignition energy of Medicago sativa. bed was the smallest. This paper provides a quantitative way to understand the lightning fire and will help to prevent the lightning fire.
{"title":"An Experimental Study on the Characteristics of Lightning Fire","authors":"Junwei Feng, D. Liang, Hao Shen","doi":"10.1109/ICFSFPE48751.2019.9055841","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055841","url":null,"abstract":"Lightning fire is an important causes of forest fire. With the global warming, lightning fire tends to increase. In this paper, the characteristics of a lightning strike wood were investigated. The damage of lightning strike wood can be divided into two forms: linear split and explosion. In addition, the effect of three kinds of ash composition on the soil resistance was measured. The soil containing Agropyron cristatum $(L.)$ Gaertn. ash had the lowest electrical resistance. The impulse voltage generator and impulse current generator were used to measure the breakdown voltage and lightning critical ignition energy of different grass beds. Compared with the other three grass beds, the breakdown voltage of Agropyron cristatum $(L.)$ Gaertn. bed was the smallest. The lightning critical ignition energy of Medicago sativa. bed was the smallest. This paper provides a quantitative way to understand the lightning fire and will help to prevent the lightning fire.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"17 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81118646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055875
Li Deng, Yuanhua He, Quanyi Liu
This paper studies the application of the unmanned aerial vehicles for fire-fighting in emergency rescue missions, discusses the characteristics of these drones, the ways to participate in emergency rescue missions and related technical indicators. An emergency rescue effectiveness evaluation model based on BPNN network model is proposed. Experiments show that the model has a more objective evaluation effect on various types of emergency rescue missions, which has a good guiding significance for the future fire-fighting drones to participate in emergency rescue operations.
{"title":"Research on Application of Fire Uumanned Aerial Vehicles in Emergency Rescue","authors":"Li Deng, Yuanhua He, Quanyi Liu","doi":"10.1109/ICFSFPE48751.2019.9055875","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055875","url":null,"abstract":"This paper studies the application of the unmanned aerial vehicles for fire-fighting in emergency rescue missions, discusses the characteristics of these drones, the ways to participate in emergency rescue missions and related technical indicators. An emergency rescue effectiveness evaluation model based on BPNN network model is proposed. Experiments show that the model has a more objective evaluation effect on various types of emergency rescue missions, which has a good guiding significance for the future fire-fighting drones to participate in emergency rescue operations.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"245 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77788191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055763
Huiqiang Liu, Yanfeng Li, Yixin Zhang, Sinan Tian, Yaxin Qiao
Due to the buried structure of the cross subway transfer station, effect of piston wind in the station will influence fire smoke spread in underground platform. In this paper, large eddy simulation (LES) method is used to study the fire simulation in a cross-typed metro transfer station. Smoke diffusion, temperature and CO concentration distributions, wind speed at the stairway are predicted for different smoke control modes. Based on the on-site measurement results of piston wind at platform in a condition with non-stopping train, the influence of deep buried structure and piston wind effect on fire smoke spreading rule of underground platform is studied. Results show that the buried structure of transfer station affects the natural air supplement of the ground floor platform. The piston wind effect has an adverse effect on the air distribution in the fire. In addition, air supplement volume at stairway cannot meet the requirements of the standard of metro design.
{"title":"Study on The Influence of Piston Wind on Smoke Propagation in a Cross-typed Metro Transfer Station","authors":"Huiqiang Liu, Yanfeng Li, Yixin Zhang, Sinan Tian, Yaxin Qiao","doi":"10.1109/ICFSFPE48751.2019.9055763","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055763","url":null,"abstract":"Due to the buried structure of the cross subway transfer station, effect of piston wind in the station will influence fire smoke spread in underground platform. In this paper, large eddy simulation (LES) method is used to study the fire simulation in a cross-typed metro transfer station. Smoke diffusion, temperature and CO concentration distributions, wind speed at the stairway are predicted for different smoke control modes. Based on the on-site measurement results of piston wind at platform in a condition with non-stopping train, the influence of deep buried structure and piston wind effect on fire smoke spreading rule of underground platform is studied. Results show that the buried structure of transfer station affects the natural air supplement of the ground floor platform. The piston wind effect has an adverse effect on the air distribution in the fire. In addition, air supplement volume at stairway cannot meet the requirements of the standard of metro design.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"426 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76748421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this work, a facile flame-retardant nanocoating was developed to reduce the fire hazard of flexible polyurethane (FPU) foam. MoS2 nanosheets was prepared using an ultrasonic-assisted liquid-phase exfoliation method. Subsequently, FPU foam was deposited with a three-layered coating composed of the positively charged guargum and negatively charged MoS2/sodium alginate by a layer-by-layer method. TEM analysis indicated the successful preparation of MoS2 nanosheets, and SEM images showed that MoS2 nanocoating was covered well on the surface of FPU foams. The cone calorimeter results indicated that the MoS2 coated FPU foam showed a remarkable increase in the char residues yield (from 3.6 to 11.9 wt%), great reduction in total CO production (from 0.54 to 0.30 g) and total CO2 production (from 22.08 to 15.13 g), respectively, as compared with those of the pure FPU foam. Char residue analysis showed that MoS2 nanosheets promoted the formation of compact char residue layer. Such a significant reduction in the CO and CO2 production for FPU foams could be attributed to the surface adsorption, physical barrier and catalytic carbonization effects of MoS2 nanosheets.
{"title":"Suppression Effect of MoS2 Nanosheets for CO and CO2 Production During Combustion of Flexible Polyurethane Foams","authors":"Maoyong Zhi, Hao Chen, Xuhong Jia, Xinhua Zhu, Sihai Feng, Quanyi Liu","doi":"10.1109/ICFSFPE48751.2019.9055827","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055827","url":null,"abstract":"In this work, a facile flame-retardant nanocoating was developed to reduce the fire hazard of flexible polyurethane (FPU) foam. MoS2 nanosheets was prepared using an ultrasonic-assisted liquid-phase exfoliation method. Subsequently, FPU foam was deposited with a three-layered coating composed of the positively charged guargum and negatively charged MoS2/sodium alginate by a layer-by-layer method. TEM analysis indicated the successful preparation of MoS2 nanosheets, and SEM images showed that MoS2 nanocoating was covered well on the surface of FPU foams. The cone calorimeter results indicated that the MoS2 coated FPU foam showed a remarkable increase in the char residues yield (from 3.6 to 11.9 wt%), great reduction in total CO production (from 0.54 to 0.30 g) and total CO2 production (from 22.08 to 15.13 g), respectively, as compared with those of the pure FPU foam. Char residue analysis showed that MoS2 nanosheets promoted the formation of compact char residue layer. Such a significant reduction in the CO and CO2 production for FPU foams could be attributed to the surface adsorption, physical barrier and catalytic carbonization effects of MoS2 nanosheets.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"15 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87068278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055867
Zhen Chen, Min Peng, Wei Cong, Hui Yang, Xudong Cheng
In this paper, a numerical study was carried out to analyze the smoke exhaust effect under different patterns. Fixed, movable, fixed-movable combined patterns and various settings in each pattern are taken into account. Smoke spread and tunnel ceiling temperature are the main characteristics of smoke exhaust effect. Results show that under normal operating condition of fixed pattern, the smoke spread in the upstream of the fire source can be suppressed. Under the fixed-movable combined pattern, the addition of the movable fan further produces a cooling effect on the downstream of the fire source, which is helpful to maintain the temperature downstream below the safe temperature threshold. In the movable smoke exhaust pattern, the influences of the inclined angle of the movable fan and the distance from the fire source are related to the air volume of the moving fan. When applying the arrangement pattern of movable fans in series, compared with increasing the number of movable fan of the same specification, increasing the ventilation volume of movable fan has a more significant effect on reducing the temperature in the tunnel.
{"title":"Numerical Investigation on the Effect of Fixed and Movable Smoke Exhaust in Subway Tunnel Fire","authors":"Zhen Chen, Min Peng, Wei Cong, Hui Yang, Xudong Cheng","doi":"10.1109/ICFSFPE48751.2019.9055867","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055867","url":null,"abstract":"In this paper, a numerical study was carried out to analyze the smoke exhaust effect under different patterns. Fixed, movable, fixed-movable combined patterns and various settings in each pattern are taken into account. Smoke spread and tunnel ceiling temperature are the main characteristics of smoke exhaust effect. Results show that under normal operating condition of fixed pattern, the smoke spread in the upstream of the fire source can be suppressed. Under the fixed-movable combined pattern, the addition of the movable fan further produces a cooling effect on the downstream of the fire source, which is helpful to maintain the temperature downstream below the safe temperature threshold. In the movable smoke exhaust pattern, the influences of the inclined angle of the movable fan and the distance from the fire source are related to the air volume of the moving fan. When applying the arrangement pattern of movable fans in series, compared with increasing the number of movable fan of the same specification, increasing the ventilation volume of movable fan has a more significant effect on reducing the temperature in the tunnel.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"11 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82649813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055849
Yingying Li
Strengthening the education of fire safety education of the rural school students is an important ground work, which universal knowledge of fire safety in rural areas. This paper researches the present situation of fire knowledge ability of rural primary and middle school and demand situation of fire safety education in Yunnan ethnic minority areas, and discusses the effective approach and education mode to improve students' learning ability of fire control knowledge. By strengthening fire safety education in rural schools, will play a good role in promoting the fire safety awareness of the whole society. Ultimately, fire safety will be ensuring fully penetrated into every corner of the society.
{"title":"The Research on the Fire Knowledge Education Mode of Rural Primary and Middle Schools in Yunnan's Minority Area","authors":"Yingying Li","doi":"10.1109/ICFSFPE48751.2019.9055849","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055849","url":null,"abstract":"Strengthening the education of fire safety education of the rural school students is an important ground work, which universal knowledge of fire safety in rural areas. This paper researches the present situation of fire knowledge ability of rural primary and middle school and demand situation of fire safety education in Yunnan ethnic minority areas, and discusses the effective approach and education mode to improve students' learning ability of fire control knowledge. By strengthening fire safety education in rural schools, will play a good role in promoting the fire safety awareness of the whole society. Ultimately, fire safety will be ensuring fully penetrated into every corner of the society.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"23 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83224543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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