A preliminary method for estimating the effective plume chimney height above a forced draft air-cooled heat exchanger operating under natural convection

Chu, Christopher (2002) A preliminary method for estimating the effective plume chimney height above a forced draft air-cooled heat exchanger operating under natural convection. Heat Transfer Engineering, 23 (3). pp. 3-12. ISSN 0145-7632

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Abstract

A preliminary method to estimate the plume chimney height for a still ambient condition is presented here. The method predicts a negligible plume chimney effect on the laboratory-size test exchanger. Measurements from an industrial-size heat exchanger (2.4 × 6.0 m²) in forced-draft mode have been compared with simulations incorporating the new method. The simulated heat loads agree with the 11 measurements to within +25/-40%, compared to an average of +70% if calculated by an existing formula and -75% by assuming negligible effective plume chimney height. Agreement between the new method and the measured exchange performance did not appear to be affected by wind speeds in the range 2-6 m/s.

Item Type: Article
Uncontrolled Keywords: Computer simulation, Heat transfer, Natural convection, Thermal load, Thermal plumes, Effective plume chimney height, Forced-draft air-cooled heat exchanger, Heat exchangers
Subjects: ?? TH7005-7699 ??
Divisions: SCHOOL > School of Engineering and Information Technology
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 25 Jan 2012 07:34
Last Modified: 17 Feb 2015 07:22
URI: http://eprints.ums.edu.my/id/eprint/1432

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