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ISSN Online: 2377-424X

International Heat Transfer Conference 5
September, 3-7, 1974, Tokyo, Japan

FREE CONVECTIVE HEAT TRANSFER IN THE SUPERCRITICAL REGION

Get access (open in a dialog) DOI: 10.1615/IHTC5.2810
pages 5-9

Resumo

Experiments were performed under pool conditions on horizontal wires in two different pressure vessels fi lied with supercritical carbon dioxide. The pressure ratio ranged from Psub>b/Pc = 1.002÷1.29, the temperature ratio tb/tc = 0.322÷1.77. Platinum and nickel-chromium alloy wires were used. Enhancement in heat transfer, with peaks in the heat transfer coefficients, strongly depends on the relation of bulk- and film-temperature to the pseudo-critical temperature. The formation of bubble-like structures on various nichrome wires was observed in either vessel.