Experimental study on inlet air cooling by water spray for natural draft dry cooling towers enhancement

Alkhedhair, A., Guan, Z., Gurgenci, H., Jahn, I. and He, S. (2014). Experimental study on inlet air cooling by water spray for natural draft dry cooling towers enhancement. In: Harun Chowdhury and Firoz Alam, Proceedings of the 19th Australasian Fluid Mechanics Conference. 19th Australasian Fluid Mechanics Conference, Melbourne, VIC, Australia, (71.1-71.4). 8-11 December 2014.

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Name Description MIMEType Size Downloads
Author Alkhedhair, A.
Guan, Z.
Gurgenci, H.
Jahn, I.
He, S.
Title of paper Experimental study on inlet air cooling by water spray for natural draft dry cooling towers enhancement
Conference name 19th Australasian Fluid Mechanics Conference
Conference location Melbourne, VIC, Australia
Conference dates 8-11 December 2014
Proceedings title Proceedings of the 19th Australasian Fluid Mechanics Conference
Place of Publication Melbourne, VIC, Australia
Publisher RMIT University
Publication Year 2014
Sub-type Fully published paper
Open Access Status
ISBN 9780646596952
Editor Harun Chowdhury
Firoz Alam
Start page 71.1
End page 71.4
Total pages 4
Collection year 2015
Language eng
Formatted Abstract/Summary
This paper deals with an experimental investigation of inlet air pre-cooling with water sprays aimed to enhance the performance of Natural Draft Dry Cooling Towers during high ambient temperature periods. An open-circuit wind tunnel with a test 1x1m2 test cross section and length of 5.2 m was employed as an approximation to the inlet flow in a Natural Draft Cooling Tower.  Experimental measurements of droplet evaporation and air cooling are presented. Nine high pressure, hollow cone nozzles were tested at various droplet sizes, air velocities (1, 2, 3 m/s), and injection rates under different ambient conditions. The water spray was characterized using a Phase Doppler Particle Analyser (PDPA). The effects of drop size distribution and air velocity on droplet evaporation and cooling effectiveness were investigated. The data shows clear trends of cooling with low air velocity or small droplet size distribution. It was found that the spray cooling efficiency, to a large extent, is dependent on spray coverage area. The experimental findings will benefit optimizing spray cooling performance in Natural Draft Dry Cooling Towers and nozzle arrangement.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Paper 71

 
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Created: Fri, 30 Jan 2015, 16:23:49 EST by Katie Gollschewski on behalf of School of Mechanical and Mining Engineering