Drying Systems

When outdoor humidity is high, a closed drying system is preferred. It relies on mechanical dehumidification and controlled indoor conditions.

• Positive air pressure keeps humid air from entering the structure.
• Mechanical control uses air movers, heaters and dehumidifiers to artificially manage indoor temperature and humidity.
• Technicians use psychrometric charts and thermo-hygrometers to monitor and adjust conditions for optimal drying.

Heat management

Mechanical drying equipment generates heat as a byproduct. To prevent overheating:

• Use the building’s HVAC system to remove humidity and maintain a stable temperature.
• Install portable air-conditioning units if HVAC is unavailable or insufficient.
• Use air movers to introduce cooler outdoor air, set up in a negative pressure position, connected to a thermostat or remote control to prevent overcooling.

When conditions change

If outdoor humidity drops significantly below indoor levels, it may help to briefly open windows or doors without compromising security, while increasing mechanical dehumidification to maximise moisture removal.