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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

SIMILARITY BETWEEN COOLING HEAT TRANSFER IN THE SUB- AND SUPER-CRITICAL REGIONS

Get access (open in a dialog) DOI: 10.1615/IHTC13.p6.360
10 pages

Resumo

The natural convective heat transfer of the carbon dioxide to a vertical cooling cylinder were investigated both in the sub- and super-critical pressure regions near the critical point and the fluid flow around the cylindrical heat transfer surface were observed. In the subcritical region, experiments on the condensation were conducted for both saturated and superheated vapours, and in the supercritical pressure region, experiments on the heat transfer from fluid being in the pseudocritical temperature and beyond the pseudocritical temperature have been done. In the supercritical region, the “liquid-like” fluid layer was observed and also heat transfer coefficient showed a very similar tendency to the condensation heat transfer. Thus, the similarities of the fluid flow and the heat transfer between the sub- and super-critical pressure regions were confirmed.