COOLING TOWER WITH INDIRECT HEAT EXCHANGER

摘要

The present invention relates to a method of exchanging heat including the steps of, providing a first indirect evaporative heat exchange section, the first indirect evaporative heat exchange section conducting a fluid stream within a plurality of pathways, the first indirect evaporative heat exchange section including a top and a bottom providing a second evaporative indirect evaporative heat exchange section, the second evaporative indirect heat exchange section conducting a fluid stream within a plurality of pathways, the second evaporative indirect heat exchange section including a top and a bottom, the second evaporative indirect heat exchange section being located under the first indirect heat exchange section, providing a vertical separation area between the first and second evaporative indirect heat exchangers, distributing an evaporative liquid onto and through the first evaporative indirect heat exchange section, vertical separation area and second evaporative indirect heat exchange section such that indirect heat exchange occurs between the fluid stream within the plurality of pathways and the evaporative liquid in the first evaporative indirect heat exchange section and the second evaporative indirect heat exchange section, moving air through the first evaporative indirect section, the vertical separation area and the second evaporative indirect section such that direct heat exchange occurs between the air and the evaporative liquid in the first evaporative indirect section, the vertical separation area and the second evaporative indirect section, wherein the air moving through the first indirect heat exchange section, vertical separation area and second indirect heat exchange section moves generally counter-current to the direction of flow of the evaporative liquid. Figure 1 P1o 4 ------ ___ ___ ___ ------------- AAir PPath