| R32/R134a混合工质水平管内流动凝结换热的实验研究 |
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| 引用本文： | 陈民,王秋旺,陶文铨.R32/R134a混合工质水平管内流动凝结换热的实验研究[J].化工学报,1999,50(6):834-837. |
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| 作者姓名： | 陈民 王秋旺 陶文铨 |
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| 作者单位： | 西安交通大学能源与动力工程学院,西安交通大学能源与动力工程学院,西安交通大学能源与动力工程学院 西安710049,西安710049,西安710049 |
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| 基金项目： | 西安交通大学动力工程多相流国家重点实验室基金 |
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| 摘 要： | <正>R32/R134a非共沸混合工质是近期比较理想的R22替代物之一。但迄今为止,报道其管内凝结换热性能研究的实验和数据都很少。在已有的报道中,Torikoshi和Ebisu以及Ro等人都只对R32质量分数为30％这种浓度配比下的R32/R134a混合物进行了管内凝结换热实验。Doerr等人则对R32质量分数为10％和25％时的R32/R134a混合工质的水平管内流动凝结换热系数进行实验测量。可以说已研究过的浓度配比和已获得的实验数据都还很少。本文对R32质量分数分别为10％,19.9％,30％,40％,51.9％和60.1％时的R32/R134a混
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| 关 键 词： | 制冷剂 凝结换热 |
EXPERIMENTAL INVESTIGATION ON FORCED CONVECTIVE CONDENSATION HEAT TRANSFER OF R32/R134a MIXTURES |
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| Chen Min,Wang Qiuwang,Tao Wenquan.EXPERIMENTAL INVESTIGATION ON FORCED CONVECTIVE CONDENSATION HEAT TRANSFER OF R32/R134a MIXTURES[J].Journal of Chemical Industry and Engineering(China),1999,50(6):834-837. |
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| Authors: | Chen Min Wang Qiuwang Tao Wenquan |
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| Abstract: | Forced convective condensation heat transfer characteristics of nonazeotropic mixtures of R32/ R134a in a horizontal tube were experimentally investigated, with six different R32 mass fractions ranged from 0 to 60%. Nearly 2000 local - average heat transfer coefficients were taken. The measured heat transfer coefficients were compared with those of the pure R22 and R134a. When compared on an equal mass flux basis, the R32/R134a mixture with about 20% R32 mass fraction had the lower heat transfer coefficient than those of the other mixtures, and those of pure R22 and R134a. The results also revealed considerable degradation of heat transfer coefficients of R32/R134a mixtures, when compared with the linearly interpolated values between the two pure components. |
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| Keywords: | R32/R134a refrigerants R32/R134a condensation heat transfer |
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