Possible Benefits of DustTamer Wind Screen Systems:

  1. Less wear on gear boxes from wind gust
  2. Less chance for Fan Stall from wind gust
  3. Reduce the negative impact of Hot plume air recirculation where a fraction of the hot buoyant outlet air (plume) is drawn back into the inlet. This results in an increase in the effective temperature of the cooling air with a corresponding reduction in heat rejection rate.
  4. Increased Fan performance by decreasing distorted inlet air flow conditions and increasing air mass flow rate through the system.

Air‐cooled steam condensers are increasingly employed to reject heat in modern power plants, due to the decreasing availability and increasing cost of cooling water.

During windy periods the effectiveness of such cooling systems is reduced. The electrical output of power plants incorporating air‐cooled steam condensers is correspondingly reduced during these periods. This reduction in plant performance leads to increased pollution and cost of electricity, a phenomenon that is particularly undesirable during periods when demand for power is high.

For known flow patterns, improved fan designs are possible and flow distortions can be reduced by means of extended surfaces or skirts, windwalls, and screens.

Two reasons were found for poor air‐cooled steam condenser performance: (1) distorted airflow patterns that significantly reduce fan performance in certain areas, and (2) recirculatory flows that entrain hot plume air. Researchers found that the reduction in fan performance is the main reason for the poor air‐cooled steam condenser performance,

Introduction

Air‐cooled steam condensers are increasingly employed to reject heat in modern power plants, due to the decreasing availability and increasing cost of cooling water.

During windy periods the effectiveness of such cooling systems is reduced. The electrical output of power plants incorporating air‐cooled steam condensers is correspondingly reduced during these periods. This reduction in plant performance leads to increased pollution and cost of electricity, a phenomenon that is particularly undesirable during periods when demand for power is high.

Understanding and predicting the factors or mechanisms that reduce the heat rejection rate of an air‐cooled steam condenser under windy and hot conditions is essential before potential cost effective modifications can be identified and implemented.

Modern flow simulation software (three‐dimensional computational fluid dynamic analysis) can be used to predict the air‐flow patterns and performance of an air‐cooled steam condenser under windy conditions. Researchers can determine the influence of distorted air‐flow patterns on the performance of individual fans.

Air Cooled Condensers