HPDRYER System Architecture
Closed-Loop Heat Pump Drying Systems
Closed-loop drying systems use a defined process-air path with recirculation and controlled moisture removal. The suitable arrangement depends on material, room and process requirements.

Where It May Fit
Review the complete recirculated air process.
A closed-loop arrangement may be considered when the project requires a defined drying-room environment, controlled airflow and a planned method for removing moisture from the process air.
Material sensitivity, loading method, room access and the desired moisture endpoint should be reviewed together. Architecture selection requires engineering review.

Engineering Considerations
Key inputs before system selection.
- Material behavior: thickness, preparation, surface condition and sensitivity to temperature.
- Moisture removal: initial moisture, target moisture and process time assumptions.
- Room layout: tray or trolley loading, access, insulation and usable volume.
- Airflow: air path, distribution, pressure balance and product arrangement.
- Controls: temperature, humidity, sensors, alarms and PLC sequence requirements.
- Site conditions: ambient climate, power supply and installation constraints.
Media and Equipment
Use verified equipment references during review.



Review a closed-loop drying requirement.
Share material, moisture, capacity, temperature, room and control information with HPDRYER.
