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Modeling of pool spreading of LNG on land
Institution:1. Texas A&M University at Qatar, PO Box 23874, Doha, Qatar;2. Mary Kay O''Connor Process Safety Center, Texas A&M University, College Station, TX 77843, USA;1. Mary Kay O''Connor Process Safety Center, College Station, TX, USA;2. Mary Kay O''Connor Process Safety Center Extension, Texas A&M University at Qatar, Doha, Qatar;1. Institute of Refrigeration and Cryogenics, Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province, Zhejiang University, Hangzhou, 310027, China;2. State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing, 100028, China;3. Beijing Institute of Aerospace Testing Technology, Beijing, 100074, China;1. Institute of Refrigeration and Cryogenics/Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province, Zhejiang University, Hangzhou 310027, China;2. State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing 100028, China;3. Beijing Institute of Aerospace Testing Technology, Beijing 100074, China;1. Mary Kay O''Connor Process Safety Center, Texas A&M University, College Station, TX, USA;2. Mary Kay O''Connor Process Safety Center Extension at Qatar, Texas A&M University at Qatar, Doha, Qatar
Abstract:This paper presents a source term model for estimating the rate of spreading of LNG and other cryogenic mixtures on unconfined land. The model takes into account the composition changes of a boiling mixture, the varying thermodynamic properties due to preferential boiling within the mixture and the effect of the various boiling regimes on conductive heat transfer. A sensitivity analysis is conducted to determine the relative effect of each of these phenomena on pool spread. The model is applied to continuous and instantaneous spills. The model is compared to literature experimental data on cryogenic pool spreading.
Keywords:LNG  Source term  Modeling  Boiling  Vapor liquid equilibrium
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