分析了两相换热器中制冷剂回路的设计。特别是研究了一种新型紧凑型换热器——微通道换热器。除了端口尺寸和端口形状效应外，还考虑了压降效应和错流换热器效应。说明从第一部分中介绍的单相热交换器分析中获得的制冷剂回路设计原则适用于两相热交换器。还发现，对于给定的端口直径，压降效应提供了平行制冷剂通道数量和热交换器长度之间的最佳关系；交叉流换热器效应与压降效应相互作用，尤其是当冷凝器表面面积受到限制时。存在端口数量和管数量的最佳组合，以使给定端口直径的冷凝器体积最小化。 关键词:1996年，制冷剂，流体流动，紧凑型热交换器，热交换器，压降，交叉流热交换器，冷凝器，空气温度，热流，优化，设计，R134a，比较，计算引用:研讨会，ASHRAE Trans。1996年，第102卷，第2部分

Analyses refrigerant circuiting design in two-phase heat exchangers. In particular, studies a new type of compact heat exchanger, the microchannel heat exchanger. In addition to port size and port shape effects, the pressure-drop effect and the cross-flow heat exchanger effect are considered. States that refrigerant circuiting design principles obtained from the single-phase heat exchanger analysis presented in part I are applicable to two-phase heat exchangers. Also found that for a given port diameter, the pressure-drop effect provides an optimum relationship between the number of parallel refrigerant passages and the heat exchanger length; and that the cross-flow heat exchanger effect interacts with the pressure-drop effect, particularly when the condenser face area is constrained. There exists an optimum combination of the number of ports and the number of tubes that minimises condenser volume for a given port diameter.KEYWORDS: year 1996, refrigerants, fluid flow, compact heat exchangers, heat exchangers, pressure drop, cross flow heat exchangers, condensers, air temperature, heat flow, optimisation, designing, R134a, comparing, calculating