Abstract:This study investigated the evaporation heat transfer and pressure drop characteristics of R32 in a horizontal multiport tube consisting of rectangular minichannels with straight microfins. The heat transfer coefficient and pressure drop were measured for a mass velocity range of 50–400[Formula: see text]kgm[Formula: see text]s[Formula: see text] and heat flux range of 5–20[Formula: see text]kWm[Formula: see text] at a saturation temperature of 15[Formula: see text]C. The frictional pressure drop during an adi… Show more
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