For the cooling delta unit, the basic heat transfer element of the cold end of the indirect air-cooling system, the wind speed, air temperature, and wall temperature measuring points were arranged laterally along the heat transfer bundle in the cooling columns on both sides of cooling delta with or without air equalizing apparatus. The wall temperature measuring points were further arranged on the left and right side of water outlet cooling columns. The changes of lateral windward wind speed, wind temperature, wall temperature and outlet water temperature of the cooling columns on both sides along the heat transfer bundles were compared and analyzed. And the influence mechanisms of the air equalizing apparatus on the flow and heat transfer characteristics of the cooling delta unit and the outlet water temperature were studied. The results show that, with the air equalizing apparatus, the distribution of lateral windward wind speed and wall temperature of the two sides cooling columns are more uniform along the heat transfer bundle.
