Floating-head, multipass

Shell-and-tube heat exchangers can be broken down into (1) pipe-coil (2) double-pipe (3) fixed-head, single-pass (4) fixed-head, multipass (5) floating-head, multipass (U-tube) (6) kettle reboiler (7) thermosyphon reboiler and (8) shell nomenclature. These devices can be mounted vertically or horizontally. 

Special features, such as floating heads removable bundles multipass, finned surfaces and U bends... 

Figure 8-1. Flow patterns in a multipass exchanger (1 2 floating head as shown).

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