@Article{fdmp.2023.026707,
AUTHOR = {Zhe Geng, Feng Feng, Shuzhen Zhang, Jie Li, Chengwei Liu, Yang Li, Tiantian Liu, Suoying He},
TITLE = {Spray Effect on the Thermal Performances of a Dry Cooling Tower},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {19},
YEAR = {2023},
NUMBER = {9},
PAGES = {2289--2304},
URL = {http://www.techscience.com/fdmp/v19n9/52753},
ISSN = {1555-2578},
ABSTRACT = {Pre-cooling the inlet air of a dry cooling tower by means of a spray can improve the tower performance during periods of high temperature. To study the spray effect on the thermal performance of natural draft dry cooling towers (NDDCTs), in this study 3-D numerical simulations of such a process have been conducted using Fluent 16.2 (a two-way coupled Eulerian-Lagrangian approach). The considered NDDCT is 120 m high and only half system is simulated due to its structural symmetry. Three different spray strategies have been investigated at a typical crosswind speed of 4 m/s, which is the most frequent wind speed. The results have shown that: (1) The three implemented spray strategies can improve the thermal performance of the studied NDDCT with a varying degree of success. In one case, the heat rejection rate can be increased by 35.2%, and the tower outlet water temperature can be decreased by 2.1°C when compared with the no spray case; (2) To improve the thermal performance of the NDDCT using a small amount of water, the design of the spray pre-cooling system must include more nozzles on the windward and fewer or even no nozzles on the leeward sides of the NDDCT.},
DOI = {10.32604/fdmp.2023.026707}
}