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ASME TEMA Counter-Flow Hairpin Exchanger with U-Bundle

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ASME TEMA Counter-Flow Hairpin Exchanger with U-Bundle

Certification : ASME, ABS, DNV-GL , BV, LR , KR, CCS, PED, TUV, ISO9001, AD2000

Tube bundle type : Removable U-tube bundle

Price : NEGOCIATED

Packaging Details : IRON FRAME+PLYWOODEN CASE OR WOVEN BAG

Temperature approach : As low as 1-2°C

Supply Ability : 500 TONS

Payment Terms : T/T,L/C

Shell configuration : U-shaped shell

Place of Origin : CHINA

Design standard : ASME/TEMA compliant

Delivery Time : 20-80 DAYS

Brand Name : YUHONG

Flow arrangement : True counter-current flow

MOQ : 1 PCS

Thermal expansion : U-bend accommodates expansion

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Hairpin Heat Exchanger with Removable U-Tube Bundle | True Counter-Current Flow Design for High ΔT & Temperature Cross Services – ASME/TEMA Fabrication
Complete Heat Exchanger Solutions

Yuhong Group Co., Ltd. designs and manufactures a comprehensive range of thermal equipment for global industries. Our core offerings include shell and tube heat exchangers, pressure vessels, air coolers, and specialized hairpin heat exchangers - a compact, high-efficiency alternative for demanding thermal duties. We also supply critical components: finned tube bundles, U-tube bundles, heat exchanger tubesheets, and all related parts - ensuring full support for new projects and maintenance.

Need a custom quote for Hairpin Heat Exchanger? Contact our engineering team directly: jimmy@steelseamlesspipe.com

ASME TEMA Counter-Flow Hairpin Exchanger with U-Bundle
Product Focus: Compact, Efficient & Thermal-Expansion Ready

The hairpin heat exchanger addresses many limitations of traditional fixed tubesheet shell & tube designs. This exchanger features a U-shaped tube bundle enclosed within a shell that is folded in half, creating a compact "hairpin" configuration.

  • Configuration: Hairpin (multitube) design - U-shaped shell with removable U-tube bundle
  • Tube bundle: U-bend tube bundle - removable for easy maintenance and cleaning
  • Flow arrangement: True counter-current flow - maximizing thermal driving force
  • Construction: ASME/TEMA compliant with full code stamping
  • Application: High ΔT services, temperature cross applications, thermal cycling duties
Why Hairpin? - Key Advantages Over Traditional Shell & Tube
Feature Hairpin Heat Exchanger Traditional Shell & Tube (Fixed Tubesheet)
Thermal expansion Handled naturally by U-bend - no expansion joint required Requires expansion joint or floating head
Flow arrangement True counter-current - allows temperature cross Limited - mixed or cross-flow
Temperature approach As low as 1-2°C Typically 5-10°C
Maintenance Removable U-tube bundle - easy inspection & cleaning Fixed bundle cannot be removed
Footprint Compact - folded design saves space Larger - requires more plot area
Thermal efficiency Higher - pure counter-current flow Moderate
Tube-side pressure Handles high pressure efficiently Requires thicker tubesheet for high pressure
When to Specify a Hairpin Heat Exchanger
  • Process requires a temperature cross (hot fluid outlet below cold fluid outlet)
  • Large temperature differential between shell and tube fluids (ΔT > 50°C)
  • High tube-side pressure - U-tube design handles pressure efficiently
  • Thermal cycling - U-bend accommodates expansion and contraction
  • Space constraints - compact footprint compared to straight shell & tube designs
Key Components & Their Functions
Component Material (Typical) Role in Equipment Performance
U-Tube Bundle Carbon steel, stainless steel, or alloy Carries tube-side fluid; U-bend allows free thermal expansion - no stress on tubesheet
Finned Tube Bundle (optional) Carbon steel + aluminum/SS fins Increases heat transfer surface area - ideal for gas cooling or high-fouling services
Heat Exchanger Tubesheet SA266 Gr.2, F304/316L, or alloy Anchors U-tubes at the inlet end; separates shell and tube sides
Shell Carbon steel or stainless steel Contains shell-side fluid; U-shaped configuration
Baffles Carbon steel or stainless steel Support U-tubes; direct shell-side flow for optimal heat transfer
Channel / Bonnet Carbon steel or stainless steel Distributes fluid to the U-tube bundle; removable for bundle access
Tie Rods & Spacers Carbon steel or alloy Maintain precise baffle spacing and bundle rigidity
Support Saddles Carbon steel Support vessel weight; designed for thermal expansion
Technical Highlights
True counter-current flow: Unlike many traditional shell & tube designs that have mixed or cross-flow patterns, the hairpin design achieves pure counter-current flow - maximizing the log mean temperature difference (LMTD) and enabling close temperature approaches.
No expansion joint required: The U-bend tube bundle naturally accommodates differential thermal expansion between tubes and shell. This eliminates the need for expensive expansion joints - a common failure point in fixed tubesheet designs.
Removable U-tube bundle: The tube bundle can be withdrawn from the shell for inspection, mechanical cleaning, or replacement - significantly reducing maintenance downtime and costs.
High-pressure capability: The U-tube design handles high tube-side pressures efficiently, as the tubes are not constrained at both ends.
Multiple configurations: Available as single-tube (double-pipe) or multitube designs, with bare tubes or finned tube bundles for enhanced performance.
Typical Applications
Industry Application Why Hairpin
Oil & gas Gas processing, compression cooling, hydrocarbon heating Handles high ΔT and thermal cycling
Petrochemical Heavy oil heating, asphalt heating, chemical processing True counter-current for temperature cross
Power generation Steam generation, feedwater heating Compact design; handles thermal expansion
Cryogenic / LNG LNG heating, cryogenic fluid heat exchange U-bundle handles extreme temperature differentials
Chemical processing Reactor feed/effluent heat exchange High ΔT capability; thermal cycling resistance
Refining Feed/effluent exchangers, preheat trains Temperature cross capability; high-pressure handling
Quality Assurance & Documentation

Every hairpin heat exchanger we fabricate includes comprehensive documentation and compliance:

  • ASME Code compliance - per ASME Section VIII, Division 1
  • TEMA standards - design, fabrication, and inspection per TEMA requirements
  • Material Test Certificates (MTC) per EN 10204 3.1
  • NDE reports - RT, UT, MT, PT as required
  • Hydrostatic test report - shell side and tube side
  • PMI (Positive Material Identification) - 100% verification
  • Third-party inspection (SGS, BV, TÜV) - at buyer's request
Get a Quotation for Your Hairpin Heat Exchanger

To quote a hairpin heat exchanger like the one in your photographs, send the following to jimmy@steelseamlesspipe.com:

  • Process data sheet (flow rates, inlet/outlet temperatures, pressures)
  • Fluid composition (corrosivity, fouling tendency)
  • Required configuration (single-tube double-pipe or multitube)
  • Tube material preference (carbon steel, stainless steel, alloy)
  • Finned tube bundle requirement (yes/no)
  • Code compliance required (ASME, TEMA)
  • Any drawing or sketch available

We will respond with a technical proposal, general arrangement drawing, and competitive price - typically within 72 hours.


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ASME TEMA Counter-Flow Hairpin Exchanger with U-Bundle Images

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