New Correlation Model of Thermal Conductivity of Liquid Hydrofluorochloro Derivatives of Olefins, Hydrofluorocarbons, and Hydrochlorofluorocarbons

IF 1 4区物理与天体物理 Q4 PHYSICS, APPLIED

High Temperature Pub Date : 2024-03-22 DOI:10.1134/s0018151x23050140

S. V. Rykov, I. V. Kudryavtseva, V. A. Rykov

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引用次数: 0

Abstract

The correlation dependence of thermal conductivity \({{\lambda }_{{\text{s}}}}\) of liquid refrigerants on the saturation line is developed as a simple function of temperature \(T\): \({{\lambda }_{{\text{s}}}}{\text{/}}{{\lambda }_{0}} = {{(1 + \tau )}^{2}} + A{{\tau }^{{ - \chi }}}\) (where \({{\lambda }_{0}}\) is the criterion unit, \(\tau = 1 - T{\text{/}}{{T}_{{\text{c}}}}\), and \({{T}_{{\text{c}}}}\) is the critical temperature). This dependence satisfies the requirements of dynamic scale theory (ST), and in particular, the passage to the limit \({{\lambda }_{{\text{s}}}}(T \to {{T}_{{\text{c}}}}) \to + \infty \). The proposed correlation dependence is tested using the example of describing the thermal conductivity of 17 liquid substances in the range of state parameters from the saturation line to the critical pressure \({{p}_{{\text{c}}}}\) and in the temperature range from the triple point temperature T_tr to \({{T}_{{\text{c}}}}\). The substances reviewed include nine fourth-generation refrigerants of hydrofluorochloro derivatives of olefins, seven hydrochlorofluorocarbons and hydrofluorocarbons, and C₃H₈. Using the description of \({{\lambda }_{{\text{s}}}}\) of C₃H₈ as an example, it is shown that the proposed correlation dependence not only qualitatively but also quantitatively accurately conveys the behavior of \({{\lambda }_{{\text{s}}}}\) in the vicinity of the critical point. Based on the statistical analysis, it is shown that the proposed correlation with significantly less uncertainty describes the data on the thermal conductivity of liquid hydrofluorochloro derivatives of olefins both on the saturation line and in the single-phase region. Based on the proposed methodology, the thermal conductivity of the cis-isomer R1225ye(Z) is calculated for the first time in the temperature range \(134.3\,\,{\text{K}} \leqslant T \leqslant 373.15\,\,{\text{K}}\).

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烯烃、氢氟碳化合物和氢氯氟碳化合物的液态氢氟氯衍生物导热系数的新相关模型

Abstract The correlation dependence of thermal conductivity \({{\lambda }_{{text\{s}}}}\) of liquid refrigerants on the saturation line is developed as a simple function of temperature \(T\)：\{{\lambda }_{{text\{s}}}}\{text{/}}{{\lambda }_{0}} = {{(1 + \tau )}^{2}}+ A{{\tau }^{{ - \chi }}}) （其中，\({{\lambda }_{0}}\)是标准单位，\(\tau = 1 - T{{text{/}}{{T}_{{\{c}}}}\) ，\({{T}_{text{c}}}}\)是临界温度）。这种相关性满足动态尺度理论（ST）的要求，特别是通过极限 \({{\lambda }_{{\text{s}}}}(T \to {{T}_{{text{c}}}}) \to + \infty \)。以描述 17 种液态物质在从饱和线到临界压力 \({{p}_{text{c}}}}\)的状态参数范围内以及在从三相点温度 Ttr 到 \({{T}_{text{c}}}}\)的温度范围内的热导率为例，检验了所提出的相关性。所审查的物质包括九种第四代烯烃氢氟氯衍生物制冷剂、七种氯氟烃和氢氟烃以及 C3H8。以 C3H8 的 \({{\lambda }_{text/{s}}}}\)的描述为例，证明了所提出的相关依赖不仅定性而且定量地准确表达了临界点附近的 \({{\lambda }_{text/{s}}}}\)行为。基于统计分析，结果表明所提出的相关性在描述烯烃的液态氢氟氯衍生物在饱和线和单相区域的热导率数据时，不确定性明显降低。根据所提出的方法，首次计算了顺式异构体 R1225ye(Z) 在温度范围 \(134.3\,\,{text{K}} \leqslant T \leqslant 373.15\,\,{text{K}}) 内的热导率。

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来源期刊

High Temperature 物理-物理：应用

CiteScore

1.50

自引率

40.00%

发文量

审稿时长

4-8 weeks

期刊介绍： High Temperature is an international peer reviewed journal that publishes original papers and reviews written by theoretical and experimental researchers. The journal deals with properties and processes in low-temperature plasma; thermophysical properties of substances including pure materials, mixtures and alloys; the properties in the vicinity of the critical point, equations of state; phase equilibrium; heat and mass transfer phenomena, in particular, by forced and free convections; processes of boiling and condensation, radiation, and complex heat transfer; experimental methods and apparatuses; high-temperature facilities for power engineering applications, etc. The journal reflects the current trends in thermophysical research. It presents the results of present-day experimental and theoretical studies in the processes of complex heat transfer, thermal, gas dynamic processes, and processes of heat and mass transfer, as well as the latest advances in the theoretical description of the properties of high-temperature media.