Studies on phase change heat transfer of R290 and its refrigerant mixtures in horizontal tube

doi:10.16085/j.issn.1000-6613.2016.11.004

Abstract

Abstract: R290(propane)and its refrigerant mixtures have been treated as ideal alternative refrigerants due to their favourable environmental and thermo-physical properties. However, they are flammable. The heat exchangers of the refrigeration system can be optimized, and the charge amount of R290 and its refrigerant mixtures can be reduced by studying the phase change heat transfer of R290 and its refrigerant mixtures in horizontal tube. In this paper, studies on phase change heat transfer of R290 and its refrigerant mixtures in horizontal tube were review. The results showed that the heat transfer performance of R290 and its refrigerant mixtures can be comparable to or above synthetic refrigerants. The phase change heat transfer correlations of R290 and its refrigerant mixtures obtained in related research were listed and compared, and the influence of mass flow, heat flux, vapor quality and other factors on phase change heat transfer from relevant researches were summarized. Finally, it is pointed out that all above researches have been conducted mainly on the traditional heat transfer pipes, the phase change heat transfer correlations and factors of R290 and its refrigerant mixtures in small tube (with the diameters of 7mm、6mm、5mm or even 4mm) should be studied in order to reduce the charge amount and flammability.

Key words: propane, phase change, heat transfer, flow, refrigerant mixture, horizontal tube

摘要： R290（丙烷）及其混合制冷剂具有优秀的环保性和热物性，是理想的替代制冷剂，但存在可燃的问题。通过对R290及其混合制冷剂在水平管内相变换热的研究，可以优化制冷系统的换热器，减少充灌量，降低R290及其混合制冷剂的可燃性。本文综述了国内外R290及其混合制冷剂在水平管内相变换热的研究，表明R290及其混合制冷剂拥有接近或超越传统合成制冷剂的相变换热性能。列出并对比了相关研究中得到的相变换热关联式，汇总了相关研究中质量流量、热流密度、干度等因素对相变换热的影响。指出当前研究大多在过去常用的传热管进行，为了降低R290及其混合制冷剂的可燃性，减少制冷系统的制冷剂充灌量，必须对R290及其混合制冷剂在小管径（7mm、6mm、5mm，甚至4mm）传热管内相变换热的关联式和影响因素进行深入研究。

关键词: 丙烷, 相变, 传热, 流动, 混合制冷剂, 水平管

CLC Number:

TB61⁺1

ZOU Sikai, DAI Yuande, HE Guogeng. Studies on phase change heat transfer of R290 and its refrigerant mixtures in horizontal tube[J]. Chemical Industry and Engineering Progress, 2016, 35(11): 3413-3420.

邹思凯, 戴源德, 何国庚. R290及其混合制冷剂在水平管内相变换热的研究进展[J]. 化工进展, 2016, 35(11): 3413-3420.

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