Patent ID: 6668914
Filing Date: 2003-12-30
Classification: F28D,F28F

Abstract:
A multiple tube bundle heat exchanger, comprising:a number of tube bundles, each of said tube bundles being formed as a self-contained integral unit having: two axially spaced tube sheets; and a plurality of heat exchanger tubes each with opposite axial ends, said two tube sheets mounted at said opposite axial ends of said heat exchanger tubes; a casing having: a tubular portion substantially coextending with said tube bundles and having: an interior subdivided by partitions into a plurality of axial chambers, a number of said axial chambers corresponding to said number of said tube bundles, each of said chambers receiving one of said tube bundles; two opposite axial ends; and flanges disposed at said two opposite axial ends; and head pieces removably mounted to said flanges, each of said head pieces having walls defining at least a first wall portion of a plenum chamber; and said two tube sheets of each of said tube bundles respectively sealing an adjacent one of said head pieces and forming at least a second wall portion of a respective plenum chamber of said adjacent one head piece.