纯工质水平管内凝结换热研究进展

摘要

相对于混合工质,纯工质(单一成分制冷剂)不存在温度滑移、系统泄漏时的成分变化等问题,在制冷设备中得到了广泛应用.研究纯工质水平管内凝结换热特性对其及其混合物在制冷、空调、热泵方面的应用具有重要意义.文章从理论和实验两个方面,综述了国外对纯工质在水平管内流动凝结换热的研究,分析了凝结换热关联式的适用性和局限性,并提出了进一步研究的建议.%Pure refrigerants are widely used in air conditioning and heat pumps due to the characteristics of no temperature glide and no composition variable during leaking compared with refrigerant mixtures. This paper presents a detailed review of research work on condensation inside horizontal tubes of pure refrigerants in the literature , from theoretical and experimental study, which is of significance in refrigeration, air conditioning and heat pump applications. The applicability and limitation of correlations of condensation heat transfer for pure refrigerants are analyzed, and suggestions are presented for further study in this field.