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Title: Heat transfer from an immersed vertical tube in a gas-fluidized bed

Abstract

The total heat-transfer coefficient, h/sub W/, is measured for vertical tubes of diameters 12.7, 28.6, and 50.8 mm immersed in beds of glass beads and silica sands at ambient conditions as a function of fluidizing velocity. A general trend of the dependence of h/sub W/ on the tube diameter is observed. This trend is most explicit for h/sub W,MAX/, which consistently increases as the tube diameter decreases. The correlations of Nu/sub MAX/ proposed by various investigators are found incapable of predicting Nu/sub MAX/ values, and, therefore, a correlation is proposed which reproduces all the existing and present data with +-25%. The dependence of h/sub W/ on tube diameter is discussed and explained in the context of distributor design, bed geometry, and hydrodynamics.

Authors:
; ;
Publication Date:
Research Org.:
Dept. of Chemical Eng., Univ. of Illinois at Chicago, Chicago, IL 60680
OSTI Identifier:
5747241
Resource Type:
Journal Article
Journal Name:
Ind. Eng. Chem. Process Des. Dev.; (United States)
Additional Journal Information:
Journal Volume: 25:1
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FLUIDIZED BEDS; DESIGN; HEAT TRANSFER; HYDRODYNAMICS; GEOMETRY; SAND; SILICA; CHALCOGENIDES; ENERGY TRANSFER; FLUID MECHANICS; MATHEMATICS; MECHANICS; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; SILICON COMPOUNDS; SILICON OXIDES; 400201* - Chemical & Physicochemical Properties

Citation Formats

Mathur, A, Saxena, S C, and Chao, A. Heat transfer from an immersed vertical tube in a gas-fluidized bed. United States: N. p., 1986. Web. doi:10.1021/i200032a024.
Mathur, A, Saxena, S C, & Chao, A. Heat transfer from an immersed vertical tube in a gas-fluidized bed. United States. https://doi.org/10.1021/i200032a024
Mathur, A, Saxena, S C, and Chao, A. 1986. "Heat transfer from an immersed vertical tube in a gas-fluidized bed". United States. https://doi.org/10.1021/i200032a024.
@article{osti_5747241,
title = {Heat transfer from an immersed vertical tube in a gas-fluidized bed},
author = {Mathur, A and Saxena, S C and Chao, A},
abstractNote = {The total heat-transfer coefficient, h/sub W/, is measured for vertical tubes of diameters 12.7, 28.6, and 50.8 mm immersed in beds of glass beads and silica sands at ambient conditions as a function of fluidizing velocity. A general trend of the dependence of h/sub W/ on the tube diameter is observed. This trend is most explicit for h/sub W,MAX/, which consistently increases as the tube diameter decreases. The correlations of Nu/sub MAX/ proposed by various investigators are found incapable of predicting Nu/sub MAX/ values, and, therefore, a correlation is proposed which reproduces all the existing and present data with +-25%. The dependence of h/sub W/ on tube diameter is discussed and explained in the context of distributor design, bed geometry, and hydrodynamics.},
doi = {10.1021/i200032a024},
url = {https://www.osti.gov/biblio/5747241}, journal = {Ind. Eng. Chem. Process Des. Dev.; (United States)},
number = ,
volume = 25:1,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1986},
month = {Wed Jan 01 00:00:00 EST 1986}
}