Pool evaporation: Experimental tests at medium-scale with gasoline |
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Affiliation: | 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;2. Key Laboratory of Building Fire Protection Engineering and Technology of MPS, Tianjin 300381, China |
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Abstract: | Pool evaporation is a major source of flammable vapour clouds. Predicting the evaporation rate of a liquid hydrocarbon pool is therefore a key issue of dispersion modelling for safety concerns. This paper presents small- and medium-scale experiments of pool evaporation carried out with liquid hydrocarbons (pentane, heptane), hydrocarbon “gasoline-like” mixtures and gasoline. Liquid mass loss was measured and the evaporation rate deduced with its evolution in time. Other observations are highlighted, regarding the evolution of liquid temperatures, mixture compositions, and scale effects like the influence of pool length on surface evaporation rate. Comparisons with well-known correlations are then shown. The authors finally suggest a new semi-empirical correlation with a set of parameters fitted on the performed experiments. |
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Keywords: | Evaporation rate Hydrocarbon mixtures Gasoline Accidental spill Medium-scale experiments Flammable vapour dispersion |
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