ABSTRACT

This paper presents the experimental analysis of partially condensed refrigerant R-32 in an adiabatic straight capillary tube. The capillary test section is tested for variation of the mass flow rate for different inlet conditions. The capillary tube test section is selected for a diameter of 1.12 mm, 1.27 mm, and 1.52 mm, and for length 1000 mm, 1500 mm, and 2000 mm. The capillary inlet pressures are 15.85 bar, 16.55 bar, and 17.24 bar. All the data is taken for the steady-state and choked flow conditions. The Buckingham π theorem is applied to find out the correlation for the mass flow rate for nondimensional analyses.

摘要

本文介绍了在绝热直毛细管中部分冷凝制冷剂 R-32 的实验分析。毛细管测试部分针对不同入口条件的质量流量变化进行测试。毛细管测试段选择的直径为 1.12 mm、1.27 mm 和 1.52 mm，长度为 1000 mm、1500 mm 和 2000 mm。毛细管入口压力为 15.85 bar、16.55 bar 和 17.24 bar。所有数据均取自稳态和阻塞流条件。白金汉 π 定理用于找出无量纲分析中质量流量的相关性。