Abstract: A simplified, selectively actuatable deicing apparatus for evaporative water cooling towers is provided which permits selective delivery of hot water from the upper distribution basin to the outer margin of the tower for deicing of the fill structure and inlet louvers thereof in order to maintain adequate airflow through the tower during sub-freezing ambient conditions. The deicing apparatus includes a substantially continuous slot in the bottom of the distribution basin adjacent its outer margin, in combination with valving devices for directing the flow of hot water through any selected segment of the slot to the underlying outer margin of the tower. The hot water carrying flume which feeds the distribution basin has a normal water level spaced above the bottom of the basin and is in direct flow communication with the latter at an elevation corresponding to its bottom such that a substantial part of the tower water is available for delivery through the selected segment of the slot.

Abstract: A simplified, selectively actuatable deicing apparatus for evaporative water cooling towers is provided which permits selective delivery of hot water from the upper distribution basin to the outer margin of the tower for deicing of the fill structure and inlet louvers thereof in order to maintain adequate airflow through the tower during sub-freezing ambient conditions. The deicing apparatus includes structure defining a substantially continuous water passageway or slot in the distribution basin adjacent the outer margin thereof, in combination with valving devices in the form of a series of elongated, individually shiftable cover members which can be selectively raised to permit flow of hot water through the slot in sufficient quantities to deice the outermost areas of the tower which are prone to ice clogging.

Abstract: Hot liquid supply and distribution structure for use with crossflow cooling towers is disclosed which permits selective variation of the amount of liquid delivered to respective fill sections of the tower in order to optimize liquid cooling therein under varying ambient weather conditions while also minimizing the amount of piping and manually operated controls needed for precise flow and distribution control. Primary supply means preferably in the form of an elongated flume or conduit is situated inwardly of and adjacent to an inner distribution basin with a plurality of outwardly extending secondary flumes or conduits interconnecting the primary supply means and an outer distribution basin.