Patent ID: 7234309

Claim:
A method for evaporative cooling of a cooling fluid comprising the steps of: (a) dividing the cooling fluid, which is evaporatively cooled by outside air while passing through an evaporative cooling section, into a first cooling fluid and a second cooling fluid, and re-circulating the first cooling fluid in an apparatus to be cooled; (b) circulating the second cooling fluid in a sensible air-cooling section in an outside air inlet and sensibly cooling the inflow outside air; (c) passing the second cooling fluid, which circulates in the sensible air-cooling section, and the first cooling fluid, which circulates in the apparatus to be cooled, through the evaporative cooling section again; and (d) evaporatively cooling the cooling fluid, which consists of the first and the second cooling fluids and passes through the evaporative cooling section, by the outside air, which is sensibly cooled in the sensible air-cooling section.