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- Exhaust from painting contains VOCs and particulate overspray. Cross-contamination is unacceptable, so plate exchangers and heat pipes are preferred over rotary wheels.
- Exhaust passes through a primary filter then the recovery core. Supply (make-up) air is pre-heated by the core before the burner/coil. A bypass allows 100 % fresh air during spray mode if required by code. Solvent-resistant coatings protect the core in aggressive booths.
- 30–60 % reduction in make-up air heating energy. Smaller burner or heater capacity. Faster booth warm-up after idle periods. Lower NOx and CO2 from reduced combustion.
- Is this safe with solvent exhaust? Yes, provided a sensible-only, non-cross-flow design is used and purge/bypass meets local fire codes (e.g., NFPA 33). Do I need special materials? For acidic or solvent-heavy exhaust, stainless steel or epoxy-coated aluminum cores are recommended.
Spray booths and curing ovens exhaust large volumes of heated air, often loaded with overspray, solvents, or moisture. Replacing that air with conditioned make-up air is expensive. Coating booth heat recovery captures the heat without mixing contaminated exhaust back into the supply.
Exhaust from painting contains VOCs and particulate overspray. Cross-contamination is unacceptable, so plate exchangers and heat pipes are preferred over rotary wheels.
- Exhaust passes through a primary filter then the recovery core.
- Supply (make-up) air is pre-heated by the core before the burner/coil.
- A bypass allows 100 % fresh air during spray mode if required by code.
- Solvent-resistant coatings protect the core in aggressive booths.
- 30–60 % reduction in make-up air heating energy.
- Smaller burner or heater capacity.
- Faster booth warm-up after idle periods.
- Lower NOx and CO2 from reduced combustion.
Is this safe with solvent exhaust?
Yes, provided a sensible-only, non-cross-flow design is used and purge/bypass meets local fire codes (e.g., NFPA 33).
Do I need special materials?
For acidic or solvent-heavy exhaust, stainless steel or epoxy-coated aluminum cores are recommended.