Pre-cooling with Munters media to improve the performance of Natural Draft Dry Cooling Towers

He, Suoying, Gurgenci, Hal, Guan, Zhiqiang and Alkhedhair, Abdullah M. (2013) Pre-cooling with Munters media to improve the performance of Natural Draft Dry Cooling Towers. Applied Thermal Engineering, 53 1: 67-77. doi:10.1016/j.applthermaleng.2012.12.033

Author He, Suoying
Gurgenci, Hal
Guan, Zhiqiang
Alkhedhair, Abdullah M.
Title Pre-cooling with Munters media to improve the performance of Natural Draft Dry Cooling Towers
Journal name Applied Thermal Engineering   Check publisher's open access policy
ISSN 1359-4311
Publication date 2013-04-01
Sub-type Article (original research)
DOI 10.1016/j.applthermaleng.2012.12.033
Open Access Status Not yet assessed
Volume 53
Issue 1
Start page 67
End page 77
Total pages 11
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Subject 2102 Energy Engineering and Power Technology
2209 Industrial and Manufacturing Engineering
Abstract This paper presents a simulation study on pre-cooling of inlet air using Munters media to enhance the performance of a Natural Draft Dry Cooling Tower (NDDCT) on hot and dry days. The ambient humidity was kept constant at 30% while the ambient temperature ranged from 10° to 50 °C during simulation. Three Munters media (CELdek7060, CELdek7090 and CELdek5090), each with three thicknesses, were employed to pre-cool the tower inlet air. Results show that NDDCT can benefit from pre-cooling with wetted media when the ambient air is hot and dry. The trade-off between the air pressure drop across the media and the benefit of evaporative pre-cooling of the inlet air was also examined. It was found that there is a critical ambient temperature below which pre-cooling application does not benefit NDDCT performance. The value of this critical temperature is a function of the tower design and the selection of wetted media. Amongst the studied media, only the pre-cooling with 0.10 m and 0.15 m CELdek7060 is to be useful in the studied case. The dependence of heat rejection improvement of the proposed tower on medium thickness is weak. Besides, thicker medium does not necessarily bring more benefit.
Keyword Natural Draft Dry Cooling Tower
Munters media
Cooling efficiency
Pressure drop
Direct Evaporative Cooler
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 2014 Collection
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