Recover waste heat. Engineer cleaner energy.
Zibo Qiyu designs and manufactures air-to-air heat exchangers and waste-heat recovery systems for industry, HVAC and clean-energy applications worldwide.
Heat exchanger families
Plate, rotary, cross-flow and counter-flow cores engineered for drying, ventilation, purification and flue-gas applications.
Drying heat recovery
Drying heat recovery
View series →Fresh air purification
Fresh air purification
View series →Cross flow heat exchanger
Cross flow heat exchanger
View series →Counterflow heat exchanger
Counterflow heat exchanger
View series →rotary heat exchanger
rotary heat exchanger
View series →Flue gas plume elimination
Flue gas plume elimination
View series →mine ventilation
mine ventilation
View series →Breeding ventilation
Breeding ventilation
View series →Heat recovery bin
Heat recovery bin
View series →Air conditioning unit
Air conditioning unit
View series →Featured products
Where Rotary Heat Exchangers Win: Best Applications
Where Rotary Heat Exchangers Win: Best Applications Our field guides spend a lot of words on…
Air-to-Air Heat Exchangers for Cleanrooms & Pharma (No Recirculation)
Air-to-Air Heat Exchangers for Cleanrooms & Pharma (No Recirculation) Pharmaceutical, biotech, and electronics cleanrooms exhaust conditioned,…
Air-to-Air Heat Recovery for Commercial Buildings & AHUs
Air-to-Air Heat Recovery for Commercial Buildings & AHUs A commercial building's fresh-air handling unit (AHU) brings…
Spray Dryer Heat Recovery & Air Preheating
Spray Dryer Heat Recovery & Air Preheating A spray dryer exhausts large volumes of hot, moisture-laden…
Flue Gas Waste Heat Recovery Systems (Boiler, Kiln & Converter)
Flue Gas Waste Heat Recovery Systems (Boiler, Kiln & Converter) Flue gas from boilers, kilns, and…
Exhaust Air Heat Recovery Systems for Industry
Exhaust Air Heat Recovery Systems for Industry Industrial processes — drying, curing, painting, ventilation — exhaust…
Built for your process
From drying lines to mine ventilation, we match the right recovery core to your operating conditions.
Run-Around Coil vs Heat Pipe: Choosing Separated-Stream Recovery
Both keep airstreams separate where wheels are banned. This article compares run-around coils and…
02Run-Around Coil Systems for Contaminated and Hazardous Exhaust
When exhaust is toxic or hazardous, only a fully separated recovery method is safe.…
03Pharmaceutical Exhaust Energy Recovery Without Air Recirculation
GMP and containment rules forbid recirculating pharmaceutical exhaust. This article shows how run-around coils…
04Grain and Food Drying: Sensible-Only Plate Recovery, No Recirculation
Drying exhaust is hot and humid. This article explains why food-safe heat recovery must…
Calculate, size & compare
Interactive calculators to help you estimate savings, select the right core and compare heat exchanger types.
Savings Calculator
Estimate payback and annual energy savings from waste-heat recovery.
Type Selector
Pick plate, rotary, cross-flow or heat-pipe for your application.
Psychrometrics
Dew point, wet-bulb, humidity ratio, enthalpy and specific volume.
Duct Loss
Estimate friction and fitting losses for round and rectangular ducts.
Drying Recovery
Size waste-heat recovery for drying ovens and dehumidifiers.
Product Comparison
Side-by-side comparison of plate, rotary, cross-flow and heat-pipe.
Need a custom heat recovery solution?
Send us your process parameters and we will engineer the right exchanger.