RKS方程在天然气热物性计算中的应用
The Application of RKS Equation in Calculating Thermo-physical Properties of Natural Gas
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摘要: 由于天然气输送中的压力高达几个甚至几十个兆帕, 因此, 计算天然气的热物性时不能按理想气体处理。介绍了采用RKS方程求解天然气热物性的求解方法和技巧。计算结果表明, 应用RKS方程计算天然气的热物性参数能较好地满足工程需要。Abstract: The pressure ranges from several to tens of MPa in gas transmission, so the natural gas can not be handled as ideal gas in the property calculation. The method and technique of calculating thermo-physical properties of natural gas using RKS equation are mainly introduced in this paper. The results indicate that RKS equation can meet the needs of engineering calculation of thermo-physical properties of natural gaswell.