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ISSN Online: 2377-424X

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

DROPWISE AND FILMWISE CONDENSATION OF ANILINE, ETHANEDIOL AND NITROBENZENE

Get access (open in a dialog) DOI: 10.1615/IHTC5.1140
pages 269-273

Resumo

Aniline, ethanediol and nitrobenzene were condensed on vertical ptfe-coated and uncoated copper plates. Precise measurements of heat flux and vapour-to-surface temperature difference were made for a range of vapour pressures. For the ptfe-coated surface, dropwise condensation was obtained with ethanediol at all coolant flow rates. With aniline and nitrobenzene, dropwise condensation was observed only when using air as coolant or when using water at low flow rates. Transition to mixed or filmwise condensation occurred as the coolant (water) flow rate was increased. The transition was found to be repeatable and reversible. Implications of these results for the theory of dropwise condensation are discussed.