Fire Protection of Steel Structures by Low Pressure Water Mist in Large-Scale Fire Test

Central Europe towards Sustainable Building

生态环境科学

Pokorný, M.^1 ; Eliá, M.^1 ; Kregl, F.^2

UCEEB, CTU, Prague, Buthrad, Czech Republic^1

FKservis S.r.o., Libuín, Czech Republic^2

关键词: Conventional sprinklers;    Cooling effects;    Cooling structures;    Extinguishing systems;    Further utilization;    Large scale fire tests;    Steel roof construction;    Water consumption;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/290/1/012028/pdf
DOI  :  10.1088/1755-1315/290/1/012028

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Water mist extinguishing systems are becoming more popular due to their much higher fire-fighting efficiency at lower water consumption compared to conventional sprinklers. The article focuses on the possibility of further utilization in a form of cooling structures and presents the results of a research in the area of low-pressure water mist and the development of a new low-pressure water mist cooling system. It also introduces a new possible direction for application of cooling steel structures or their surroundings in order to increase fire resistance of steel structures. To verify the cooling effects of low-pressure water mist, a large-scale fire test with a model of steel roof construction was carried out in a room with dimensions of 4.0 × 4.0 × 2.0 m. The fire test was conducted in two scenarios. The first scenario is a reference test without application of water mist, where temperatures of the burning room and steel structures are monitored. Compared to the first scenario, the second scenario includes the use of low-pressure water mist protection of the steel structure model at the time of full fire development.