Abstract
Cooling efficiency of a natural draft, dry cooling tower (NDDCT) is significantly affected under cross-wind condition and might decrease to 75 percent in the range of moderate to high wind-velocity condition. Separated flow occurring at the rear radiators, along with deflected plume exiting tower stack, reduces the cooling efficiency. Various researchers have recommended wind breakers to partially decrease the undesirable effect of the flow separation. But in the present research work, a new exit configuration has been proposed for tower stack, which could reduce the throttling effect of deflected plume. Numerical simulation of the proposed configuration showed improvement in the cooling efficiency up to 9 percent compared to the present, usual one at the generally investigated wind-velocity value of 10 m/s.
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