Publicado 8 números por año
ISSN Imprimir: 1065-5131
ISSN En Línea: 1563-5074
Indexed in
CONDENSATION HEAT TRANSFER AND PRESSURE DROP OF R-410A IN 5.0-MM-O.D. SMOOTH OR MICROFIN TUBES AT LOW MASS FLUXES
SINOPSIS
R-410A condensation heat transfer and pressure drop data are provided for a 5.0-mm-O.D. microfin tube at low mass fluxes (50 − 250 kg/m2 · s). The heat transfer coefficient of the microfin tube shows a minimum behavior with the mass flux. At a low mass flux, where the flow pattern is stratified, surface tension induced condensation by microfins overwhelms shear induced condensation, and the heat transfer coefficient decreases as mass flux increases. At a high mass flux,where the flow pattern is annular, shear induced condensation governs the heat transfer, and the heat transfer coefficient increases as mass flux increases. The pressure drop of the microfin tube is larger than that of the smooth tube. Data are compared with existing correlations.
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Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Enhancement of Two-Phase Flow Using EHD Technique, in Electric Fields, Additives and Simultaneous Heat and Mass Transfer in Heat Transfer Enhancement, 2020. Crossref