Kühlturm

摘要

A cooling tower includes a hot water vessel (5) in whose bottom spray ports (6) are formed. The spray ports (6) communicate with passages (16) defined by vertical heat transfer surface members (12). A fan (2) draws air in from the atmosphere through the passages (16) and then discharges it to the atmosphere. Hot water flowing through the spray ports (6) runs down the surfaces of the heat transfer surface members (12) and is cooled by direct contact with the air. Certain pairs of the heat transfer surface members define permanent wet passages (17), with which the spray ports (6) communicate. The remaining pairs of heat transfer surface members define wet-dry changeover passages (18), which are isolated from the permanent wet passages (17) and which communicate with a separate auxiliary hot water supply vessel (21) via spray pipes (19) below the hot water vessel (5). Hot water may thus be selectively supplied to the wet-dry changeover passages (18). The hot water vessel (5) is supported by the spray pipes (19).