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Vapor-liquid phase equilibria of nonideal fluids with a G(E)-EoS model.

机译：具有G（E）-EoS模型的非理想流体的汽液相平衡。

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This study dealt with the prediction and correlation of vapor-liquid equilibria behavior of nonideal fluids. The thermodynamic formalism of the G{dollar}rmsp{lcub}E{rcub}{dollar}-EoS models, which combines the two traditional methods {dollar}rmgamma{lcub}-{rcub}phi and phi{lcub}-{rcub}phi{dollar} used so far for low and high pressure phase equilibria correlations respectively, has been combined with the 1FG{dollar}rmsp{lcub}E{rcub}{dollar} model, based on one-fluid theory, to produce a more consistent approach to the phase equilibrium problem.; In the first part of our study we examine the predictive abilities of our model for vapor-liquid equilibria of highly nonideal fluids. The results establish the fact that the Huron-Vidal mixing rule with a one parameter version of the 1FG{dollar}rmsp{lcub}E{rcub}{dollar} model, is able to successfully utilize available experimental information at low pressures for phase equilibria predictions of multicomponent mixtures over an extended range of pressures and temperatures.; In the second part of the study we perform an analysis of the correlative abilities of the 1FG{dollar}rmsp{lcub}E{rcub}{dollar} model, as applied to hydrogen-hydrocarbon mixtures. The results of this part suggest that the unique local composition character of the 1FG{dollar}rmsp{lcub}E{rcub}{dollar} model, along with its one size and one temperature-dependent energy parameter, make it able to adequately describe vapor-liquid equilibria behavior of multicomponent mixtures for this highly asymmetric class of mixtures. Moreover, it is shown that the model parameters for binary hydrogen-hydrocarbon mixtures can be correlated to the acentric factor of the hydrocarbon.; The important class of the refrigerant mixtures was modeled in the third part of this study. The 1FG{dollar}rmsp{lcub}E{rcub}{dollar} model was introduced into the Wong-Sandler mixing rule, based on the infinite pressure state thermodynamic formalism. The results for these systems showed that a limited amount of experimental data, either at low or high pressures can be utilized to provide a parameter which is practically independent of the temperature set used. As shown from the results, this single parameter can be used to extend vapor-liquid equilibria predictions over a range of conditions for this difficult class of systems. More importantly, we set a heuristic rule able to screen multiparameter and one parameter models. A coordination temperature-parameter planet can be used as a predictive tool from a limited amount of information.; Our model comes in lieu of the G{dollar}rmsp{lcub}E{rcub}{dollar} models based on two-fluid theory, which are inconsistent with the one fluid character of an EoS. The 1FG{dollar}rmsp{lcub}E{rcub}{dollar}-EoS framework proposed in this work meets current needs in the area of Applied Thermodynamics, which require that the model's parameters can be obtained from a limited information of experimental data and can give for accurate phase equilibria predictions of nonideal mixtures from low to high pressures.
机译：这项研究涉及非理想流体的汽液平衡行为的预测和相关性。 G {dollar} rmsp {lcub} E {rcub} {dollar} -EoS模型的热力学形式主义，结合了两种传统方法{dollar} rmgamma {lcub}-{rcub} phi和phi {lcub}-{rcub迄今为止，分别用于低压和高压相平衡相关性的} phi {dollar}已与1FG {dollar} rmsp {lcub} E {rcub} {dollar}模型结合，基于一种流体理论，生成了解决相平衡问题的方法更加一致。在研究的第一部分中，我们检验了我们模型对高度非理想流体的汽液平衡的预测能力。结果建立了一个事实，即具有1FG {dollar} rmsp {lcub} E {rcub} {dollar}模型的一个参数版本的Huron-Vidal混合法则能够成功地利用低压下的可用实验信息进行相平衡在更大的压力和温度范围内预测多组分混合物。在研究的第二部分中，我们对应用于氢-碳氢化合物混合物的1FG {rmsp {lcsp} lc {lcub} E {rcub} {dollar}模型的相关能力进行了分析。这部分的结果表明，1FG {dollar} rmsp {lcub} E {rcub} {dollar}模型的独特局部组成特征，以及其一个大小和一个与温度相关的能量参数，使其能够充分描述对于这种高度不对称的混合物，多组分混合物的气液平衡行为。而且，表明二元氢-烃混合物的模型参数可以与烃的偏心因子相关。在本研究的第三部分中，对制冷剂混合物的重要类别进行了建模。基于无限压力状态热力学形式论，将1FG {dollar} rmsp {lcub} E {rcub} {dollar}模型引入Wong-Sandler混合规则。这些系统的结果表明，可以利用有限量的低压或高压实验数据来提供实际上与所使用的温度设定无关的参数。从结果可以看出，对于该类困难的系统，该单个参数可用于扩展汽-液平衡预测的条件范围。更重要的是，我们设置了一种启发式规则，能够筛选多参数和一个参数模型。可以从有限的信息量中将协调温度参数行星用作预测工具。我们的模型代替了基于二流体理论的G {dollar} rmsp {lcub} E {rcub} {dollar}模型，该模型与EoS的一个流体特性不一致。这项工作中提出的1FG {dollar} rmsp {lcub} E {rcub} {dollar} -EoS框架可以满足应用热力学领域的当前需求，该需求要求可以从有限的实验数据信息中获得模型的参数，并且可以给出从低压到高压的非理想混合物的精确相平衡预测。

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