丙烷R290是理想的制冷剂替代物之一。目前换热器的小型化是一种趋势,直径5mm的小管已广泛应用于空调蒸发器中。文中针对目前关于R290小管内两相流动研究不足的情况,采用Fluent软件,开展了R290在外径5mm水平光滑管内两相流动沸腾换热和压降特性的相关性能模拟,详细分析了质流密度、热流密度、饱和蒸发温度以及入口干度等因素的影响规律。 Propane R290 is one of the ideal refrigerant replacements. At present, the miniaturization of the heat exchanger is a trend, and the small tube of 5mm in diameter has been widely used in the air-conditioner evaporator. Aiming at the current lack of research on the two-phase flow in the R290 small tube, Fluent software was used to simulate the correlation performance of two-phase flow boiling heat transfer and pressure drop characteristics of the R290 in the smooth tube with an outer diameter of 5mm. The effects of mass flow density, Heat flux density, saturated evaporation temperature and inlet dryness and other factors.