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
How to Size and Select Cross-Flow Plate Heat Exchangers for Recovery Units
This article shows how to size and select cross-flow plate heat exchangers for an air-to-air recovery…
Air-to-Air Heat Recovery Units vs HRV and ERV: What is the Difference
Buyers often ask whether an air-to-air heat recovery unit is the same as an HRV or…
Cross-Flow Plate Heat Exchangers: Working Principle and Applications
A cross-flow plate heat exchanger is the most common core inside air-to-air recovery units: two airstreams…
Air-to-Air Heat Recovery Units: Types, Specs and Selection Guide
An air-to-air heat recovery unit captures thermal energy from exhaust air and transfers it to incoming…
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,…
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.