External and Internal Natural Convection Mass Transfer at Cylindrical Tubular Electrodes

Autor:	Özlem Korkut, Hanifi Saraç
Rok vydání:	1999
Předmět:	Convection Natural convection Chemistry Internal flow General Chemical Engineering education Grashof number Thermodynamics General Chemistry Mechanics External flow Physics::Fluid Dynamics Combined forced and natural convection Mass transfer Tube (fluid conveyance)
Zdroj:	JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 32:130-133
ISSN:	1881-1299 0021-9592
Popis:	External and internal natural convection mass transfer rates were investigated at both vertical and horizontal cylindrical tubes using the electrochemical technique. Measurements were carried out witha.the tube outside surface only active (external flow)b.the tube inside surface only active (internal flow)c.both the tube outside and inside surface active (simultaneous external and internal flow)The electrode length and the electrolyte concentration were varied at constant temperature. External natural convection mass transfer rates were in good agreement with literature data. Internal natural convection mass transfer at vertical electrodes rates depended on the diameter-to-length ratio (d/L) and concentration. In the case of simultaneous external and internal natural convection, the measured mass transfer rate for internal convection was lower than that for external convection. Results were correlated in terms of d/L ratio, Sherwood, Schmidt and Grashof numbers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4cdb27e8535be46eea3f9fd9dd1ac70d https://doi.org/10.1252/jcej.32.130 Zobrazit plný text záznamu