Abstract:Flow boiling of R-134a refrigerant was experimentally conducted in a test section which is a stainless steel tube having internal diameter of 1 mm. The DC power supply was connected to the test section to provide constant surface heat flux conditions. Flow pattern and heat transfer data were obtained for a mass flux range of 252–820 kg/m2s, a heat flux range of 1–21 kW/m2 and a saturation pressure of 8 bar. The flow visualization results showed four different flow patterns including slug flow, throat-annular f… Show more
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