本文研究了制冷剂共沸混合物在绝热毛细管中的流动。首先，对这些膨胀装置的实验研究进行了广泛的文献综述。文献检索的结果表明，R-407c和R-404a两种流体缺乏实验数据，尽管这些流体现在作为R-22和R-502的替代品发挥着重要作用，并且在制冷系统中实际使用了绝热毛细管。给出了五种不同几何结构的大量实验数据，包括两个内径，1。 06毫米和1.85毫米（0.0417英寸和0.0728英寸），长度分别为1.05米、1.30米和1.60米（41.33英寸、51.18英寸和62.99英寸）。流量范围为10 kg/h至112 kg/h（22 lb/h至246.4 lb/h）。操作条件为冷凝压力220 psig至280 psig（1618 kPa至2031 kPa），过冷温度5°C至30°C（9°F至54°F）。这些结果以图形和表格的形式呈现，旨在为环境友好型制冷系统的发展做出贡献。单位:双引文:研讨会，ASHRAE交易，第卷。 第106页。1.

This paper investigates the flow of zeotropic mixtures of refrigerants through adiabatic capillary tubes. First, an extensive literature review related to the experimental study of these expansion devices was carried out. The results of this literature search showed a lack of experimental data for two fluids, R-407c and R-404a, in spite of the important role that these fluids now play as substitutes for R-22 and R-502 and the practical use of adiabatic capillary tubes in refrigeration systems. Extensive experimental data are presented for five different geometric configurations covering two inner diameters, 1.06 mm and 1.85 mm (0.0417 in. and 0.0728 in.), and three lengths, 1.05 m, 1.30 m, and 1.60 m (41.33 in., 51.18 in., and 62.99 in.). The flow rate covers a range of 10 kg/h to 112 kg/h (22 lb/h to 246.4 lb/h). The operating conditions were 220 psig to 280 psig (1618 kPa to 2031 kPa) of condensing pressure and 5°C to 30°C (9°F to 54°F) of subcooling. These results are presented in both graphical and tabulated forms and are intended to be a contribution to the development of environmentally benign refrigeration systems.Units: Dual