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ISSN Online: 2377-424X

International Heat Transfer Conference 4
August 31 - September 5, 1970, Paris-Versailles, France

CONVECTIVE AND RADIATIVE HEAT TRANSFER TO WATER VAPOR IN UNIFORMLY HEATED TUBES

Get access (open in a dialog) DOI: 10.1615/IHTC4.3830
pages 1-10

摘要

Total heat transfer by radiation and turbulent convection to water vapor was measured along 915 mm long by 12.7 mm I.D. uniformly heated tubes. Parameter ranges were: pressure (1.7, 3.4, 5.1 atm), inlet temperature (150, 370, 595°C), bulk inlet Reynolds number (1900-35,000), wall temperature (200-1100°C), and wall-to-bulk temperature ratio (1.1-2.11). Superposition of convective and radiative heat transfer in fully turbulent flow is shown to be valid in the thin gas limit. A closed form expression for the radiative transfer accounting for real gas properties is in substantial agreement with experiment. Data of intermediate optical thickness is correlated empirically.