Heat exchanger support construction
 A heat exchanger of the shell and tube type having a floating tube sheet to accommodate differential thermal expansion and contraction between the shell and the tubes. The cross-sectional area of sliding joint means between the floating tube sheet and the shell, and the total external and internal cross-sectional areas of the tubes, are selected to minimize axial forces on the tubes. A novel tube support system including hollow support members engaged between the adjacent tubes enables a true counterflow heat exchange relationship to be established between the shell side fluid and the tube side fluid. 
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James H.
Anderson