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Protection of Fire Exposures by Water Drenching, with Special Reference to Oil Tank Fires 通过淋水保护火灾暴露 特别是油罐火灾
在火灾情况下,由于供水有限,必须小心地分配给各个需求点。在石油仓库中,对可用供水需求最大的情况通常是储罐火灾,此时相邻储罐必须由喷淋水供应进行保护。考虑如何在数学上模拟燃烧罐上方的火焰和烟雾羽流的辐射强度,然后转向计算相邻点上的合成入射辐射的问题。因此,可以导出相邻储罐上的入射辐射模式,并估算落在储罐上的总热流。 考虑到热流,评估了受威胁储罐顶部和壳体上冷却水流的需求。基于之前的计算,推导出了一个简化公式,用于计算受威胁储罐上所需的雨淋器流量。在石油储罐火灾的专业领域之外,本文中对发射和入射辐射问题的处理将有助于研究其他火灾中产生的问题。关键词:火灾、消防、供水、油罐、热流、计算、雨淋器、水流。引用:研讨会论文,佐治亚州亚特兰大,1990年
In fire situations water supplies, being limited, have to be carefully allocated to the various demand points. In a petroleum depot, the situation making greatest demands on the available water supply is commonly that of a tank fire, when adjacent tanks must be protected by supplies of drencher water. Considers how the radiation intensity of the plume of fire and smoke over a burning tank may be mathematically simulated and then turns to the problem of calculating the resultant incident radiation on neighbouring points. The pattern of incident radiation on a neighbouring tank may thus be derived and the total heat flow falling on the tank estimated. Given the heat flow, the need for cooling water flow over the roof and shell of the threatened tank is evaluated. Based on the earlier calculations, a simplified formula is derived for calculating the needed drencher flow on threatened tanks. Outside the specialised field of petroleum tank fires, the treatment in the paper of the questions of emitted and incident radiation will be of use in studying problems arising in other fires.KEYWORDS: fire, fire protection, water supply, oil tanks, heat flow, calculating, drenchers, water flow.
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