Abstract
Abstract The effect of porous wind screens, installed in a cross-type arrangement below the fan platform, on the performance of El Dorado Power Plant’s 6 × 5 fan air-cooled steam condenser (ACC) under windy conditions is investigated using computational fluid dynamics. The existing wind screen configuration is found to increase ACC performance under windy conditions relative to the no screens case. The ACC performance enhancement can be attributed to an increase in the performance of the fans upstream of the wind screens brought about by the stagnation effect of the screens on the flow below the fan platform. The potential for further ACC performance enhancement at El Dorado is identified since the existing screen configuration is found to reduce the performance of the fans downstream of its location. An improved screen configuration consisting of screens with a loss coefficient of Ksc = 10 installed to half the fan platform height, with the remaining space below the fan platform left open, is identified for El Dorado. This configuration provides the favorable stagnation effect upstream of its location while having less of a detrimental effect on the downstream fans. It is further found that additional performance benefits could be gained under the prevailing wind conditions at El Dorado by relocating the N–S orientated screens by one fan row, thus increasing the number of fans operating in the beneficial upstream stagnation region.
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