Patent ID: 6142219
Filing Date: 2000-11-07
Classification: F28C,F28D,Y02B,Y10S

Abstract:
A heat exchange system for extracting heat from a process fluid comprising:a housing;a plenum in the housing;a process fluid inlet;a process fluid outlet;a dry indirect contact heat exchange section having an air inlet side positioned to receive air from the plenum, an air outlet side and a process fluid circuit connected to receive process fluid from the process fluid inlet;a second indirect contact heat exchange section including an air inlet side and an air outlet side positioned for an air stream to pass to the plenum, and a process fluid circuit connected to receive process fluid;a process fluid outlet flow path from the second indirect contact heat exchange section to the process fluid outlet;a direct contact heat exchange section having fill media, an air inlet side and an air outlet side positioned for an air stream to pass to the plenum;a device for creating currents of air moving in parallel through the second indirect contact heat exchange section and through the direct contact heat exchange section and into the plenum and a single current of air moving from the plenum into the air inlet side of the dry indirect contact heat exchange section; anda distribution system for selectively distributing an evaporative liquid to said second indirect contact heat exchange section.