Patent ID: 6179048
Filing Date: 2001-01-30
Classification: F28F

Abstract:
A heat exchanger system including a plurality of tubes disposed within a shell, the shell having an inner diameter, comprising:means for directing a hot fluid stream into the tubes, the tubes having an inflow end and an outflow end;a first, second and third tubesheet sealingly attached to the shell, the first and third tubesheet being disposed in proximity to the inflow end and the outflow end of the tubes, the second tubesheet being disposed therebetween and having means for sliding of the tubes therethrough while providing for leakage and restricting flow between the tubes and the second tubesheet; andmeans for directing a cooler fluid stream into a first compartment in the shell, the first compartment being between the first and second tubesheet and having a volume, then out of the first compartment to a distal end of a second compartment in the shell, the second compartment being between the second and third tubesheet, wherein the cool fluid stream can flow countercurrent to the hot fluid stream in the tubes to an outlet from the second compartment in proximity to the second tubesheet.