Thermodynamic Properties of Steam in the Critical Region
Thermodynamic Properties of Steam in the Critical Region
复制标题
临界区蒸汽的热力学性质
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
J. Sengers
中科院分区：
文献类型：
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作者：
J. L. Sengers;B. Kamgar;F. W. Balfour;J. Sengers
本文对临界区水蒸气热力性质的实验数据进行了分析。所使用的模型是由临界现象的现代理论所给出的修正和扩展的标度。所有的热力学性质都以封闭（参数）形式给出。除了理论给出的三个普适常数外，该模型还具有十六个可调参数，这些参数是通过对PVT和声速数据的最小二乘拟合获得的。它在密度为200-420 kg/m3和温度为644-693 K的范围内有效。它准确地代表了状态方程，蒸汽压，潜热，比热Cp和Cv和声速的实验数据。我们的分析允许新的估计的临界参数的蒸汽，并导致了一些结论的相互一致性的实验数据。文后附有水蒸气热力学性质的表列值。
An analysis is presented of the experimental data on thermodynamic properties in the critical region of steam. The model used is that of revised and extended scaling, as given by the modern theory of critical phenomena. All thermodynamic properties are given in closed (parametric) form. The model has, in addition to three universal constants that are given by theory, sixteen adjustable parameters that were obtained by least‐squares fit to PVT and speed‐of‐sound data. It is valid in the range 200–420 kg/m3 in density and 644–693 K in temperature. It accurately represents the experimental data for equation of state, vapor pressure, latent heat, specific heats Cp and Cv and speed of sound. Our analysis permits new estimates of the critical parameters of steam, and has led to a number of conclusions regarding the mutual consistency of the experimental data. Tabulated values of the thermodynamic properties of steam are appended to the paper.