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Achieving higher accuracies for process simulations by implementing the new reference equation for natural gases

机译：通过实施新的天然气参考方程式，实现更高的过程模拟精度

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For efficient design and operation of technical processes, accurate simulations are essential. Therefore, a precise representation of thermophysical properties using an adequate thermodynamic model is necessary. The GERG-2008 (Kunz, Klimeck, Wagner, & Jaeschke, 2007; Kunz & Wagner, submitted for publication) is the new reference equation of state for natural gases consisting of up to 21 specific compounds. As the equation of state describes the gas and liquid phase as well as the super-critical region and the vapour-liquid equilibrium with the highest accuracy available, it has high potential for accurate process-modeling. In order to implement the software available for the new equation into various common simulation tools, the GERG-2008 Property Package has been developed, which complies with the CAPE-OPEN standards specification. The influence of thermodynamic models on the simulation of the only liquefaction plant for natural gas existing in Europe is investigated. Results show significant improvements in accuracy for simulations using the new thermodynamic model.
机译：为了有效地设计和运行技术流程，准确的仿真至关重要。因此，有必要使用适当的热力学模型精确表示热物理性质。 GERG-2008（Kunz，Klimeck，Wagner和Jaeschke，2007； Kunz和Wagner，提交出版）是天然气的新状态方程，由多达21种特定化合物组成。由于状态方程以最高的可用精度描述了气相和液相以及超临界区域和蒸气-液体平衡，因此它具有进行精确过程建模的巨大潜力。为了将可用于新方程式的软件实施到各种通用仿真工具中，已开发了符合CAPE-OPEN标准规范的GERG-2008属性包。研究了热力学模型对欧洲唯一的天然气液化工厂的模拟的影响。结果表明，使用新的热力学模型进行模拟时，准确性显着提高。

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