Hydrodynamic and heat transfer characteristics of crater bed

Name: Naree Somrattanaku

Organization : King Mongkut's Institute of Technology Thonburi. Faculty of Engineering. Department of Chemical Engineering

keyword: Hydrodynamics

; Heat transfer

Abstract: Hydrodynamic and heat transfer characteristics of a circulating particles system, named crater bed, in which a fountain of particles is raised by a jet of gas flowing downward into a crater formed below the bed surface, were studied. These characteristics were experimentally examined for both single and multi-mozzle inlet tube with varying inlet pipe size, bed particle size, height between bed surface and nozzle, and velocity of fluid. The empirical correlations for the fountain height of circulating particles and minimum gas velocity for crater forming with the effective parameters were proposed. The effective heat transfer coefficients between the circulating particles in the form of fountain and the inlet tube surface in contact with were determined for both low and high temperature conditions, and were found to be 40-150 W/m2C (<100 C) and 60-500 W/m2C (250-900 C), respectively. The correlation for Nusselt number was also proposed

King Mongkut's Institute of Technology Thonburi

Address: Bangkok

Email: info.lib@mail.kmutt.ac.th

Created: 1997

Issued: 2006-05-26

Modified: 2552-03-27

บทความ/Article

BibliograpyCitation : Compiled Research and Technical Papers/Posters , KMITT1997 p. 142-149

CallNumber: 12001175

eng

©copyrights King Mongkut's University of Technology Thonburi

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