Abstract
Generator unit No.1 in an electric power plant cannot run at full load owing to the high temperature of generator cooling air. Analysis has proved that the problem lay in the large cooling load and low air side heat transfer coefficient, and thus, the cooling requirement cannot be meet in summer. Therefore, a generator air cooler with circular fin structure is optimized under summer operating conditions. The heat transfer coefficient, air side pressure drop, water side pressure drop resistance and overall weight are used as the optimization objectives using genetic algorithm, to optimize structure parameters of the generator air cooler. Through analysis, the best structure combination can be selected to manufacture a product. The optimized generator air cooler could meet the generator cooling requirements, operate at full load, and also reduce the investment and operation costs.
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