Cooling performance of solid containing water for spray assisted dry cooling towers

Sadafi, M. H., Jahn, I. and Hooman, K. (2015) Cooling performance of solid containing water for spray assisted dry cooling towers. Energy Conversion and Management, 91 158-167. doi:10.1016/j.enconman.2014.12.005

Author Sadafi, M. H.
Jahn, I.
Hooman, K.
Title Cooling performance of solid containing water for spray assisted dry cooling towers
Journal name Energy Conversion and Management   Check publisher's open access policy
ISSN 0196-8904
Publication date 2015
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.enconman.2014.12.005
Open Access Status
Volume 91
Start page 158
End page 167
Total pages 10
Place of publication London, United Kingdom
Publisher Elsevier
Collection year 2015
Language eng
Formatted abstract
This article investigates the performance of saline water, compared to pure water in spray cooling and demonstrates the existence of several advantages. To simulate the crystallisation behaviour of saline water droplets, a set of modifications are made to the multicomponent discrete phase model (DPM) of ANSYS FLUENT. After validation against single droplet data, a practical spraying application with a single nozzle in a vertical flow path is studied. The results are compared with a similar case using pure water as the coolant. It is shown that using saline water for spray cooling improves cooling efficiency by 8% close to the nozzle. Furthermore, full evaporation takes place substantially earlier compared to the pure water case. The mechanism behind this phenomenon is explained. The consequence of this is a reduction of up to 30% in the distance between nozzle and the creation of a dry gas stream. This paper provides new fundamental understanding in the area of saline spray cooling, and shows that the use of saline water can lead to a number of benefits, such as reduced water costs (compared to pure fresh water), reduced infrastructure costs (more compact cooling towers), and improved cooling performance.
Keyword Discrete phase model
Heat and mass transfer
Hybrid cooling
Saline water
Scanned electron microscope
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
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