We were contracted by a customer in the carbon fiber manufacturing industry to fabricate cooling tower heat exchangers to be used to cool hot air leaving a thermal fume incinerator.

Air-to-Air Industrial Cooling Towers

PRE-heat Inc. provides custom designed and manufactured industrial air to air heat recovery equipment and systems for a variety of industries. We were contracted by a customer in the carbon fiber manufacturing industry to fabricate cooling tower heat exchangers to be used to cool hot air leaving a thermal fume incinerator. PRE-Heat Model V13/31-72-85.5-2S was manufactured using stainless and carbon steel to the customer’s specifications. The system including a 2 shell pass, and vertical shell and tube heat exchanger installed in series for the hot air stream, and separate cooling air circuits. The air volume and temperature features included cool 6,300 SCFM, 1,600ᵒF to 1,750ᵒF hot air leaving a thermal fume incinerator cooled to 350ᵒF. It then entered a bag-house filtration system for final cleaning, and a cooling air stream for each exchanger that is 33,000 SCFM of 100ᵒF outside air. Auxiliary equipment consisted of two top hot air inlet plenums with internal insulation and an access door for cleaning, as well as two bottom outlet plenums with drains and access doors for cleaning.

This comprehensive customized system met the customer’s specifications, and was delivered to Tennessee on time and on budget. For more information on how PRE-heat Inc. can manufacture a custom heat exchanger for your application, contact us.

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Highlights of this Custom Manufactured Cooling Tower Heat Exchanger

Product Description

These heat exchangers are used to cool hot air leaving a thermal fume incinerator.

Custom Manufacturing Capabilities & Applied/Processes

PRE-heat designed the unit and prepared 2D drawings using CAD. On site visits aided in the unit design. All parts were cut, machined, welded and assembed at PRE-heat.

Heat Exchanger Specifications/Features

2) PRE-heat Model V13/31-72-85.5-2S Heat Exchangers

  • (2) 2 Shell Pass
  • Vertical Shell & Tube

Auxiliary Equipment:
(2)Top Hot Air Inlet Plenums

  • Internal Insulation
  • Access Door for Cleaning

(2) Bottom Outlet Plenums

  • Drains
  • Access Doors for Cleaning

Exchangers Installed in Series for the Hot Air Stream With Separate Cooling Air Circuits
Air Volume & Temperature

  • Cool 6,300 SCFM of 1,600ᵒ to 1,750ᵒF Hot Air Leaving a Thermal Fume Incinerator Down to 350ᵒF
  • It Will Than Enter a Bag-House Filtration System for Final Cleaning
  • Cooling Air Stream for Each Exchanger is 33,000 SCFM of 100ᵒF Outside Air
Overall Dimensions

Two units each at 5′ Deep X 10′ Wide X 20′ Tall

Tightest Tolerances

Tube sheets are cut within +/- .003″. The structure and shell are cut within +/- 1/8″.

Material Used

Hot Heat Exchanger: 309 Stainless Steel Tubes and Tube Sheets
Cold Heat Exchanger: 304L Stainless Steel Tubes and Tube Sheets
Top Plenums: Carbon Steel & Stainless Steel
Bottom Plenums: Stainless Steel

Max Finish

Unit was primed and finish coated with high temp. paint to at lease 5 mil. Thick overall

In process testing/inspection performed

The shell was all die penitrant tested, and was built while using our standard Quality Control Sheets/system

Industry for Use

Carbon Fiber Manufacturing

Delivery/Turnaround Time

8-10 week turnaround time from receipt of approved drawings.

Delivery Location

Tennessee

Standards Met

Customer supplied specifications

Product Name

PRE-heat Model V13/31-72-85.5-2S Heat Exchangers