火災模式及鋼結構防火被覆之熱分析

Fire Model and Thermal Analysis of Steel Fireproofing Coating

林文山(Wen-Shan Lin) ； 卓世偉(Shih-Wei Cho)

《中華科技大學學報》 68期 (2016/10) Pp. 31-44

摘要

本研究考慮火載量、火災邊界熱性質、通風狀況、火災燃燒類型及火災熱釋放率，利用熱平衡方法建立火災溫度歷時，其結果與ISO834、ECCS Model和LieModel相比較，並利用火災溫度歷時分析鋼結構防火被覆後之鋼材溫度歷時。研究結果顯示，本研究之火災模式可考慮之參數較多，例如熱釋放率、通風控制型或燃料控制型火災，而ECCS Model、Lie Model並無考量燃料控制型火災和火災之成長階段。因此對於燃料控制型火災，各模式預測之火災溫度與鋼構溫度差異頗大。

關鍵字

火載量 ； 通風狀況 ； 熱平衡

並列摘要

This paper develops a theoretical time-temperature relationship for compartment fire based on the fundamental heat balance. The heat balance equation takes into account the fire load, thermal properties of boundary, ventilation, combustion and heat release rate. The result of time-temperature relationship was compared with ISO 834, ECCS model and Lie model. Thermal analysis of steel fireproofing coating was analyzed by using the different fire model. The results of this study show that the more parameters can be considered, such as the rate of heat release, ventilation-controlled fire or fuel-controlled fire. On the contrary, the ECCS model and Lie model are not consideration the fuel-controlled fire and the growth phase. For fuel-controlled fires, the predictions of temperature of fire and steel are significant differences by using different fire model.

並列關鍵字

Fire Load ； Ventilation ； Heat Balance