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
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 heat pipes…
Frost Formation and Defrost Strategies in Plate Heat Exchangers
Cold climates ice the plate. This article covers return-air bypass, recirculation defrost, and glycol pre-heat, and…
Plate Heat Exchangers in Fresh-Air Handling Units: Sensible Recovery Done Right
Fresh-air handling units waste energy without recovery. A stationary sensible plate exchanger keeps streams separate, needs…
Energy Recovery Ventilation for Commercial Buildings: Where the Wheel Wins
ERV cuts commercial HVAC loads by pre-conditioning incoming air. In comfort duty the rotary wheel is…
Rotary Wheel Maintenance: Purge Sector, Seals, and When to Walk Away
Comfort-duty rotary wheels need discipline: purge sector, seals, bearings. This article also draws the hard line…
Heat Pipe Cooling for Telecom Base Stations: Passive, Separate-Stream, Zero Mixing
Telecom shelters need cooling without mixing outdoor air into protected electronics. Heat-pipe natural cooling delivers passive,…
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.