Longer Twisted Tube Length

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Hairpin Heat Exchangers API Meeting October 30th,
2006
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• True Counter-Current Flow
• Single pass shellside and tubeside

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Double-pipes in slurry service
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Brown Fintube Hairpin Heat Exchangers
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Mechanical Advantages

• Separate tubesheets for high temperature
  differences, cycling, and thermal shock.
• Moveable support brackets for shell expansion.
  Fixed supports also available.
• Support brackets are slotted for versatility of
  installation.
• All through bolting and no internal bolting.
• Tubeside and shellside connections are on the
  same end for ease of installation and piping.
• Large radius u-bends for thermal expansion and
  ease of tubeside cleaning.
• A variety of closure designs for high pressure
  services.

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Unlike TEMA, nomenclature and model numbers for
hairpin heat exchangers are unique to each
manufacturer!
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Closures-The Distinguishing Component
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Through-Bolted Closures
Separated-Head Double-pipe
Separated-Head Low-Pressure Multitube
High-pressure Taper-Lok
Separate Sealed Lok-Flange
All these closures use our patented external
split-ring design!
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Return End Bonnet Closure

• Return End Bonnet Closure is a conservative
  through-bolted design. When the bonnet is
  removed, the u-bends of the tubes are completely
  exposed to permit full field inspection. The
  full floating u-tube bundle compensates for the
  differential shell-tube expansion.

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Process Advantages

• True counter-current flow to maximize temperature
  differences for thermal efficiency.
• Heat transfer enhancement devices offer a variety
  of solutions.
• Complete vaporization can be achieved.
• Versatility of single section or multiple section
  configurations.
• Double-pipes for slurries and high fouling
  services.

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Feed-effluent exchanger
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Feed-effluent exchanger
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Shellside Heat Transfer Augmentation Devices and
Tube Supports

• Extended surface
• Baffles
• Low Pressure Drop Tube Supports
• Twisted-Tubes

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Longitudinal Fintubes for Double-Pipes
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Longitudinal Fintubes for Multitubes with
Peripheral Baffle
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Traditional Segmental Baffles
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Lok Baffle
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Twisted-Tubes
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One Piece Twisted U-tube
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Tubeside enhancement devices
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Various Tube Inserts

• Twisted Tape
• Cored-Helix
• Heli-Core

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Size Matters!
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CF/E Hairpin Exchanger
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C F/E Hairpin Exchanger
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Brown Fintube Hairpin Heat Exchangers