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Augmented van der Waals Compressibility Factor and its Application to Supercritical Fluids
Author(s): 
Pages: 511-515
Year: Issue:  6
Journal: JOURNAL OF CHEMICAL ENGINEERING OF CHINESE UNIVERSITIES

Keyword:  热压力系数压缩因子状态方程超临界流体;
Abstract: 利用实验测得的液体的热压力系数,修正原始van der Waals模型中的排斥体积,得到了一个适用于高密度流体的推广的van der Waals压缩因子。将它与Redlich和Kwong提出的吸引项相结合,建立了一个流体状态方程。用某些有代表性的超临界流体的pVT数据检验,结果表明,其对体积、压力和逸度系数的计算准确度可与CS-RK方程相媲美。
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