Publicado 8 números por año
ISSN Imprimir: 1065-5131
ISSN En Línea: 1563-5074
Indexed in
FLOW BOILING HEAT TRANSFER IN R-600A FLOWS INSIDE AN ANNULAR TUBE WITH METALLIC POROUS INSERTS
SINOPSIS
This investigation was undertaken to better understand the characteristics of flow boiling heat transfer (in which only the inlet is subcooled) in a hydrocarbon refrigerant, R-600a (isobutane), flowing in an annular tube with and without perforated copper porous inserts. Testing was conducted at a saturation temperature of 5° C, vapor qualities of 0.08−0.87, mass fluxes of 300−400 kg/m2s, and heat fluxes of 119.5−195.3 kW/m2. The effects of mass flux, heat flux, vapor quality, and insert geometry (porosity, mean pore diameter, and permeability) on R-600a heat transfer and pressure drop are discussed.
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