ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Distribution of local heat transfer coefficient values in the wall region of an agitated vessel
Magdalena Cudak and Joanna Karcz
Department of Chemical Engineering, Szczecin University of Technology, Al. Piastów 42, PL-71-065 Szczecin, Poland
Received: 31 March 2007 Revised: 21 June 2007 Accepted: 5 July 2007
Abstract: Experimentally found local heat transfer coefficients are analyzed as a function of the measuring point on the heat transfer
surface area of the agitated vessel wall and of the impeller eccentricity. Eccentric Rushton turbine and A 315 impeller are
considered. Local heat transfer coefficients were measured by means of the computer-aided electrochemical method. The measurements
were performed in an agitated vessel with inner diameter 0.3 m, filled with liquid up to the height equal to the vessel diameter.
The experiments were carried out within the turbulent regime of the Newtonian liquid flow in the agitated vessel. The results
were compared with the data obtained for the agitated vessel equipped with an eccentrically located axial flow propeller or
an HE 3 impeller. Experimental studies show that the distributions of the heat transfer coefficient values depend on the impeller
eccentricity, impeller type and the direction of the liquid circulation in the agitated vessel.
Keywords: agitation - local heat transfer - agitated vessel - eccentricity
Full paper is available at www.springerlink.com.
Chemical Papers 62 (1) 92–99 (2008)
Monday, February 06, 2023