ISSN Online: 2377-424X
International Heat Transfer Conference 5
FREE CONVECTIVE HEAT TRANSFER IN THE SUPERCRITICAL REGION
Аннотация
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.