Performance characteristics of a downward spray water-jet cooling tower
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Publication Details
Author list: Muangnoi T., Asvapoositkul W., Hungspreugs P.
Publisher: Elsevier
Publication year: 2014
Journal: Applied Thermal Engineering (1359-4311)
Volume number: 69
Issue number: #
Start page: 165
End page: 176
Number of pages: 12
ISSN: 1359-4311
eISSN: 1873-5606
Languages: English-Great Britain (EN-GB)
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Abstract
The performance characteristics of a new type of cooling tower, which is called water-jet cooling tower, are analyzed using experiments and numerical simulations. The water-jet cooling tower would be designed as a modified wet cooling tower, operating without fill and fan. A comparison of the water-jet cooling tower test results with those of the model simulation has demonstrated the validity of that simulation and its use as a design tool. For the preliminary study, we chose tower spray zone height (H), water to air flow rate ratio (L/G), droplet diameter (dd), discharge droplet velocity (vd), and air velocity (va) as the variation parameters. The results indicate that exergy values and 2nd law efficiency are normally sensitive to reasonable variation in dd, L/G and H, but do not respond greatly to reasonable variation in vd, and va. It is also found from the present calculation that the evaporation share of the total energy transfer and that of the total exergy supplied seems to have influence on the tower's performance. ฉ 2014 Elsevier Ltd. All rights reserved.
Keywords
2nd Law efficiency, Water-jet cooling tower
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