Influence Mechanism from the Inner Walkway on the Performance of an Air-Cooled Power Plant

AbstractIn view of the sensitivity to the wind conditions, the architecture of the air-cooled steam condenser (ACSC) always affects the characteristics of the whole power plant. As a result, it is important to structure a reasonable ACSC for better comprehensive performance in the power plant. This paper uses an existing numerical model to discuss the impact mechanisms from the inner walkway on the performance of the ACSC, and the relevant characteristics of the power plant at different inner walkways is also studied. It is found that the performance of the ACSC as well as the power plant is improved by extending the length extending of the inner walkway, thus shrinking the negative pressure regions around the fan surfaces. Finally, the net power and the thermal efficiency are improved by an amplitude of 1.2 and 0.3% from Lw=0 to 2 m, respectively, for the inner walkway based on the relevant value at the design wind speed case. It is concluded that an appropriate inner walkway should be chosen during the ...