Two-Phase Flow Boiling Pressure Drop with R290 in Horizontal 3 mm Diameter Mini Channel

Abstract

Various experiments about the pressure drop of two-phase flow boiling in a mini channel tube have been carried out. In addition to obtaining data on the experimental pressure drop, many researchers compare their experimental data and even add the data from the other researchers with existing correlations. The main objective of this study is to obtain the pressure drop experimental data and characteristics of two-phase flow boiling using refrigerant R290, where the experiment used a horizontal mini channel tube made of stainless steel with an inner diameter of 3 mm, a hydraulic diameter of 2 mm, and a length of 2 m. In this experiment, the data were varied from the mass flux of 50 kg/m²s to 180 kg/m²s, and heat flux of 5 kW/m² to 20 kW/m2, while the value of vapor qualities was 0.1 to 0.9. The experimental data are then predicted with several homogeneous and separated method pressure drop correlations. The result of the pressure drop value most accurate with Li and Hibiki correlation with 13.53% as a deviation with the condition the saturation temperature is varied from 9.5 to 8.7 ⁰C and a constant mass flux of 169.85 kg/m²s, and the deviation of 11.48% with the condition the saturation temperature is varied from 9.97 to 9.58 ⁰C and a constant mass flux of 101.43 kg/m²s.