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research-article

A CORRELATION FOR HEAT TRANSFER TO GAS-SOLID SUSPENSIONS FLOWING IN PIPES

[+] Author and Article Information
Mirza Mohammed Shah

10 Dahlia Lane Redding, CT 06896 mmshahpe@hotmail.com

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the Journal of Thermal Science and Engineering Applications. Manuscript received February 10, 2019; final manuscript received May 6, 2019; published online xx xx, xxxx. Assoc. Editor: Gerard F. Jones.

ASME doi:10.1115/1.4043743 History: Received February 10, 2019; Accepted May 06, 2019

Abstract

Heat transfer to flowing gas-solid mixtures in pipes is required in many applications including chemical processing, pneumatic transport, and nuclear reactors but no well-verified method for predicting heat transfer is available. A new correlation is presented which has been validated with a wide range of data that includes a variety of particles (minerals, metals) in several gases. Particle diameters range from 13 to 1130 µm, pipe diameters 5.1 to 77 mm, and solids loading ratio of 0 to 520. Flow orientations include horizontal, vertical up, and vertical down. The new correlation has mean absolute deviation (MAD) of 18.9 % with 630 data points from 20 studies. The same data were also compared with six published correlations. Their MAD ranged from 35 to 57 %. Hence the new correlation is likely to help in more accurate design.

Copyright © 2019 by ASME
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