Hairpin

Description

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A hairpin design is often more thermally efficient than a traditional shell and tube, which results in a lower up-front cost and lower overall weight. Our experienced designers and engineers can meet any custom cooling requirement.

Removable Bundle Types

Separated Closure Double Pipe: Type SCDP

• Employs the industry’s most widely used separated head features
• Shell side and tube side closures are separately bolted through, ideal for applications involving wide temperature or pressure differences between the shell and tube side fluids
• In cyclic service, separately gasketed closures are more leak resistant compared to shell and tube designs
• Separate shell and tube side seal configuration. This makes the tube bundle easy to remove, clean and replace.
• Well suited for large imbalance of flow on shellside
• Long fins are used to achieve high thermal performance with minimal pressure drop

Common Closure Hairpin: Type CC

• Single bolted closure design. Ideal for applications involving low design temperature or pressure differences between the shell and tube side fluids
• Enjoys the maintenance advantages of a Separated Closure Hairpin (Type SC)
• The center ring keeps the shell gasket seated during the removal of the tube head for inspection or service

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Non-Removable Bundle Types

All-Welded Hairpin: Type AW

• More cost effective design when removable bundle is not required
• Fixed tubesheet design

Jacketed Pipe: Type JP

• Most economical solution for any heat transfer application
• Fixed tubesheet design

Performance Notes

• Ideal for applications that require high thermal performance and a compact footprint
• True countercurrent flow allows for a close temperature approach between the shell side and tube side fluids, as well as a temperature cross
• Removable bundles are available in two closure options, separated or common, for required cleaning on both the shell and tube sides
• Non-removable bundles are the cost-effective option when a fixed tubesheet design is feasible
• Wide temperature differentials are handled without an expansion joint
• Ease of maintenance with a long radius U-bend
• All connections are at one end of the heat exchanger
• Sizes up to 60 in. (150 cm) in diameter and 480 in. (1200 cm) in length
• Materials include carbon steel, 300 series stainless steel, Duplex stainless steel, copper alloy, chrome-moly alloys, Hastelloy, Inconel, Monel, 254 SMO, alloy clad/weld overlay
• Designed and fabricated per ASME, TEMA, CRN, PED, CML