Wind Effects and the Challenge to Enhance Thermal Performance of Three Aligned Natural Draft Dry Cooling Towers

The performance of natural draft dry cooling towers (NDDCTs) depends on the environmental conditions. Crosswind is known to have the most destructive effect, whereas the ambient temperature is marked as the next. A 3-D numerical model was developed to investigate the thermal performance of a single...

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Bibliographic Details
Published in:Iranian journal of science and technology. Transactions of mechanical engineering 2018-12, Vol.42 (4), p.347-354
Main Authors: Ghafari, Samad, Golneshan, Ali-Akbar
Format: Article
Language:English
Subjects:
Engineering
Mechanical Engineering
Research Paper
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Summary:The performance of natural draft dry cooling towers (NDDCTs) depends on the environmental conditions. Crosswind is known to have the most destructive effect, whereas the ambient temperature is marked as the next. A 3-D numerical model was developed to investigate the thermal performance of a single as well as three aligned units of NDDCTs under crosswind conditions. The computed results showed major discrepancies between computed velocity patterns and pressure fields around three aligned towers and those of the single tower due to windshield effect of neighboring cooling towers. The thermal performance losses for the single tower under crosswind showed higher values compared with those of towers in the aligned arrangement. The best thermal performance of three aligned NDDCTs was achieved when the crosswind was directed along the towers’ connection line.
ISSN:2228-6187
2364-1835
DOI:10.1007/s40997-017-0102-4