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 Systems for Contaminated and Hazardous Exhaust
When exhaust is toxic or hazardous, only a fully separated recovery method is safe. This article…
Plate vs Heat Pipe vs Rotary: A Selection Cheat-Sheet
A one-page decision table for choosing the right air-to-air heat exchanger by application, with the banned…
Pharmaceutical Exhaust Energy Recovery Without Air Recirculation
GMP and containment rules forbid recirculating pharmaceutical exhaust. This article shows how run-around coils and desiccant…
Rotary Heat Exchangers: Where They Shine and Where They Are Banned
Rotary wheels reach high total effectiveness in comfort HVAC, but they are excluded wherever airstreams must…
Heat Pipe Heat Exchangers 101: Working Fluid, Tilt, and Limits
A plain-language look at how heat pipes move heat with no pump, why tilt matters, and…
Grain and Food Drying: Sensible-Only Plate Recovery, No Recirculation
Drying exhaust is hot and humid. This article explains why food-safe heat recovery must use sensible-only…
Built for your process
From drying lines to mine ventilation, we match the right recovery core to your operating conditions.
Run-Around Coil Systems for Contaminated and Hazardous Exhaust
When exhaust is toxic or hazardous, only a fully separated recovery method is safe.…
02Pharmaceutical Exhaust Energy Recovery Without Air Recirculation
GMP and containment rules forbid recirculating pharmaceutical exhaust. This article shows how run-around coils…
03Grain and Food Drying: Sensible-Only Plate Recovery, No Recirculation
Drying exhaust is hot and humid. This article explains why food-safe heat recovery must…
04Mine Ventilation Heat Recovery: Plate and Heat-Pipe Boundaries
Underground mines must move huge air volumes while keeping intake and return streams separate.…
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.