At a large mid-western printing plant, solvents used in ink from presses generate harmful vapors. Two regenerative thermal oxidizers, with a combined 70,000 CFM exhaust, incinerate the VOCs. But rather than let all that heat go to waste up a stack, the company wisely uses it to heat its facility.
Two Munters Thermo-Z™ air-to-air heat exchangers, one on each incinerator, capture exhaust heat and use it to heat outside air for plant makeup air in winter. Each heat exchanger is actually part of a complete packaged heat recovery system that also includes supply and exhaust fans, dampers, and filters.
Under design conditions, the systems heat air from -10°F to 130°F using 250°F exhaust from one incinerator and 350°F exhaust from the other. Combined, they can transfer over 10,400,000 BTUs per hour. The temperature to the space is controlled to a consistent 130°F by modulating the hot gas flow through the heat exchanger.
About Thermo-Z
The Thermo-Z™ all-welded heat exchanger, offers modular design with heave gauge, welded-plate construction, and guaranteed leakage rates less than 0.01% factory tested. Thermo-Z™ offers integral thermal expansion compensation and an insulated shell with an all-welded outer casing for increased performance. Both crossflow and counterflow configurations are available. Variable plate spacing is utilized to optimize performance, pressure drop, and service requirements, providing the most efficient and maintenance free heat recovery equipment available.
Welded construction eliminates the possibility of premature failure and increased leakage caused by particulate build-up in the compression seals of a non-welded unit.
Tel: (800) 843-5360 | E-mail: dhinfo@munters.com