Tube-in-shell heat exchangers

摘要

A tube-in-shell heat exchanger comprises co-axial tubes on the longitudinal axis of a bundle of heat exchange tubes. The outer tube incorporates two spaced cylindrical tube sheets in which the opposed ends of the heat exchange tubes are received. The outer tube is closed at one end and the corresponding end of the inner tube is sealed to the outer tube between the tube sheets to define discrete co-axial fluid flow ducts which are interconnected at the closed end region of the outer tube by the heat exchange tubes.