Parametric study on spray cooling systems in natural draft dry cooling towers with a new nozzle representation approach

Alkhedhair, Abdullah, Guan, Zhiqiang, Jahn, Ingo and Gurgenci, Hal (2015). Parametric study on spray cooling systems in natural draft dry cooling towers with a new nozzle representation approach. In: Kamel Hooman, Hal Gurgenci, Zhiqiang Guan, Yuanshen Lu and Manuel Lucas, Proceedings of the 17th IAHR International Conference on Cooling Tower and Heat Exchanger. IAHR International Conference on Cooling Tower and Heat, Gold Coast, QLD, Australia, (1-12). 7-11 September 2015.

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Name Description MIMEType Size Downloads
Author Alkhedhair, Abdullah
Guan, Zhiqiang
Jahn, Ingo
Gurgenci, Hal
Title of paper Parametric study on spray cooling systems in natural draft dry cooling towers with a new nozzle representation approach
Conference name IAHR International Conference on Cooling Tower and Heat
Conference location Gold Coast, QLD, Australia
Conference dates 7-11 September 2015
Proceedings title Proceedings of the 17th IAHR International Conference on Cooling Tower and Heat Exchanger
Place of Publication Brisbane, Australia
Publisher The University of Queensland
Publication Year 2015
Sub-type Fully published paper
Open Access Status Not Open Access
ISBN 9780646943770
Editor Kamel Hooman
Hal Gurgenci
Zhiqiang Guan
Yuanshen Lu
Manuel Lucas
Start page 1
End page 12
Total pages 12
Collection year 2016
Language eng
Formatted Abstract/Summary
Pre-cooling of inlet air with water spray is proposed for performance enhancement of natural draft dry cooling towers (NDDCTs) during high ambient temperature periods. In this study, an Eulerian-Lagrangian 3-D numerical model was used and validated to simulate evaporating water sprays produced by real nozzles. A new adaptable method of hollow-cone spray representation into an Eulerian-Lagrangian numerical modeling was developed to reproduce the real nozzle behavior using experimentally measured initial spray characteristics and taking into account radial evolution of droplet size distribution and air/droplets momentum exchange. A parametric analysis using the validated CFD model with the new nozzle representation method was conducted on the effect of different spray characteristics parameters on spray cooling system performance for nozzle design optimisation.
Keyword Spray cooling
Air pre-cooling
Natural draft cooling technologies
Nozzle optimisation
Spray representation
Air pre-cooling
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

 
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Created: Mon, 26 Oct 2015, 09:52:46 EST by Zhiqiang Guan on behalf of School of Mechanical and Mining Engineering