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Mass Transfer to Clean Bubbles at Low Turbulent Energy Dissipation.
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SYSNO ASEP 0081953 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Mass Transfer to Clean Bubbles at Low Turbulent Energy Dissipation. Title Přestup hmoty čistých bublin při malé disipaci turbulentní energie. Author(s) Alves, S. S. (PT)
Vasconcelos, J.M.T. (PT)
Orvalho, Sandra (UCHP-M) RID, ORCID, SAISource Title Chemical Engineering Science. - : Elsevier - ISSN 0009-2509
Roč. 61, 4 (2006) , s. 1334-1337Number of pages 4 s. Language eng - English Country GB - United Kingdom Keywords bubble ; mass tranfer ; turbulence Subject RIV CI - Industrial Chemistry, Chemical Engineering CEZ AV0Z40720504 - UCHP-M (2005-2011) Annotation Experimental gas-liquid mass transfer data from a system where single bubbles are kept stationary by a low turbulence downward liquid flow are compared with predictions from theoretical models which take turbulence into account. The data clearly show that, for the turbulence intensities at play, turbulence does not affect mass transfer. Higbie's equation with contact time te=d/u may be used for the calculation of the gas-liquid mass transfer coefficient of clean bubbles in systems with levels of turbulent kinetic energy dissipation of, at least, up to ?~0.04m2s-3. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2007
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