Patent ID: 7765827
Filing Date: 2010-08-03
Classification: F24F,F28C,F28D,Y02B

Abstract:
1. A multi-stage hybrid evaporative cooling system comprising: a first stage including a first plurality of heat exchangers, the first plurality of heat exchangers configured to exchange heat between a first direct evaporative cooling subsystem and a first indirect evaporative cooling subsystem; and a second stage adjacent to the first stage, the second stage including a chamber, a second plurality of heat exchangers, the second plurality of heat exchangers configured to exchange heat between a second direct evaporative cooling subsystem and a second indirect evaporative cooling subsystem; wherein the second plurality of heat exchangers has an upper set of heat exchangers and a lower set of heat exchangers, the lower set of heat exchangers extending only partially through the chamber of the second stage, the lower set of heat exchangers has at least some airflow out of an outlet of the lower set that surrounds an exterior surface of an end section of the lower set of heat exchangers and the airflow flows through the second direct evaporative cooling subsystem.