R32和R32/R1234yf混合工质黏度实验测量及模型

文针对含HF〇s类混合制冷剂黏度开展实验和模型研究。采用振动弦法黏度计对R32纯质和R32/R1234yf混合制冷剂黏度进行了实验测量,测量的温度范围分别为263~350K、263~360K,压力最高均为30MPa,实验系统黏度测量的不确定度为2%。本文共获得了177组实验数据,利用得到的实验数据,基于硬球模型分别拟合了R32纯质和R32/R1234yf混合制冷剂黏度方程。R32纯质黏度实验数据与方程的平均绝对偏差为0.28%,最大绝对偏差为0.92%;R32/R1234yf混合工质黏度实验数据与方程的平均绝对偏差为〇.69%,最大绝对偏差为2.09%。由此可见,实验数据和黏度模型吻合较好,为...

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Bibliographic Details
Published in制冷学报 Vol. 39; no. 2; pp. 39 - 47
Main Author 孟现阳;孙裕坤;曹法立;温辰阳;吴江涛
Format Journal Article
LanguageChinese
Published 西安交通大学能源与动力工程学院热流科学与工程教育部重点实验室 西安710049 2018
Subjects
混合制冷剂;热物理性质;黏度;R32/R1234yf
mixed refrigerants
viscosity
黏度
thermophysical properties
混合制冷剂
热物理性质
R32/R1234yf
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ISSN0253-4339
DOI10.3969/j.issn.0253-4339.2018.02.039

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Summary:文针对含HF〇s类混合制冷剂黏度开展实验和模型研究。采用振动弦法黏度计对R32纯质和R32/R1234yf混合制冷剂黏度进行了实验测量,测量的温度范围分别为263~350K、263~360K,压力最高均为30MPa,实验系统黏度测量的不确定度为2%。本文共获得了177组实验数据,利用得到的实验数据,基于硬球模型分别拟合了R32纯质和R32/R1234yf混合制冷剂黏度方程。R32纯质黏度实验数据与方程的平均绝对偏差为0.28%,最大绝对偏差为0.92%;R32/R1234yf混合工质黏度实验数据与方程的平均绝对偏差为〇.69%,最大绝对偏差为2.09%。由此可见,实验数据和黏度模型吻合较好,为R32和R32/R1234yf混合制冷剂的应用研究提供了重要参考依据。
Bibliography:11-2182/TB
There is current interest in developing working fluids with low global warming potential(GWP).One such fluid is2,3,3,3-tetrafluoroprop-1-ene(R1234yf).Although the thermophysical properties are critical for the selection of the potential refrigerant,only a few studies have been conducted on the thermophysical properties of refrigerant mixtures containing R1234yf.In this work,we focused on the viscosity of R32and the binary mixture of R32/R1234yf.The liquid viscosity of R32and binary mixture of R32/R1234yf were presented over the temperature ranges of(263to350)K and(263to360)K at pressures up to30MPa using the vibrating wire viscometer.The measurements of mixtures containing the mole fraction(0.2448,0.4108,0.6086and0.8356)of R32were carried out.The overall uncertainties of these results were±2.0%.The experimental results of the pure R32and the mixture were correlated with hard-sphere scheme.The average absolute deviations between the experimental results and the correlations were0.28%for R32and0.69%fo
ISSN:0253-4339
DOI:10.3969/j.issn.0253-4339.2018.02.039