FLOW BOILING OF NATURAL REFRIGERANTS IN HORIZONTAL MINICHANNELS PART 1: TWO-PHASE FLOW PRESSURE DROP
Pressure drop experiments were performed in horizontal minichannels vaporization with R-744 and R-290. The test sections were made of stainless steel tubes, uniformly heated by applying electric current directly to the tubes. The inner tube diameters of the test section were 1.5 mm and 3.0 mm with heated lengths of 1000 and 2000 mm. Experiments were performed at inlet saturation temperature ranges from -10 to 10℃, mass flux ranges from 50 to 600 kg/m2s and heat flux from ranges of 5 to 40 kW/m2. The current study showed the significant effect of mass flux, tube diameter, saturation temperature, and refrigerant properties on the pressure drop. The experimental results were compared against several existing two-phase pressure drop prediction methods. A new pressure drop prediction method based on the Lockhart-Martinelli method was developed using the experimental data with minichannels.
A.S.PAMITRAN K.I.CHOI J.T.OH H.K.OH
Graduate School, Chonnam National University, Yeosu, Chonnam, South Korea Dept. of Refrigeration and Air Conditioning Engineering, Chonnam National University, San 96-1,Dundu Dept. of Refrigeration and A/C Engineering, Pukyong National University, Busan, South Korea
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）