BackThe challenge: Harness and reuse the substantial heat and water vapor emitted from their drywall dryer system while meeting stringent performance criteria.
The solution: We designed, manufactured, and installed a custom air-to-air cooling tower heat exchanger to recycle waste heat and vapor.
The numbers: Unit recovers 68,400 SCFM of 305ᵒF DB, 170ᵒ WB with .392 water/dry air, hot moisture leaving dry wall dryer.
Drywall manufacturing
20 weeks post-design approval
Cooling towers
Custom unit design
304 stainless steel
West Virgina, USA
Recover 68,400 SCFM of 305ᵒF DB, 170ᵒ WB with .392 water/dry air, hot moisture leaving dry wall dryer.
Capture 135,868 SCFM outside air heated up to 270ᵒF.
Return 13 gallons of water per minute.



A leading player in the drywall manufacturing industry faced a critical challenge: effectively harnessing and reusing the substantial heat and water vapor emitted from their drywall dryer system while meeting stringent performance criteria. Recognizing the need for an innovative solution, they turned to PRE-heat to design and manufacture a custom air-to-air cooling tower heat exchanger.
Engineered with precision, the exchanger features a vertical shell and tube design with four shell passes, ensuring optimal heat transfer efficiency. With 1.5" outer diameter tubes extending 40' in length, it was primed to handle the demanding requirements of the drywall manufacturing process.

In addition to the main exchangers, auxiliary equipment including a stainless steel bottom hot air inlet and outlet plenum was seamlessly integrated, providing essential insulation and structural support. Clad in durable M.S. cladding and featuring strategically placed access doors for ease of maintenance, the final product epitomized quality, reliability, and customer satisfaction.

This project stands as a testament to PRE-heat's commitment to innovation and excellence in the field of heat exchange technology. Pre-heat engineers harness decades of experience to design, build, and install custom heat exchangers tailored to the needs of our clients in the building materials industry. Recover heat, save energy, and lower bills with PRE-heat. Start your project today.
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