Effect of Temperature on Gas Transfer at Low Surface Renewal Rates

by Niels Aagaard Jensen, Univ of Aalborg, Aalborg, Denmark,

Document Type: Proceeding Paper

Part of: Air-Water Mass Transfer

Abstract: In order to investigate the dependence of gas transfer coefficients on temperature under conditions of low surface renewal rates, laboratory experiments were conducted using simultaneous measurements of oxygen and krypton-85 transfer. The literature showing decreasing gas transfer coefficients were evaluated. It is concluded that, contrary to some reports, gas transfer coefficients increase with increasing temperature under conditions of low turbulence.

Subject Headings: Oxygen transfer | Temperature effects | Turbulence | Mass transfer | Water management

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