The Drying Process Nigel Hewitt Technical Manager

Traditional Methods Evaporation Air movement –Air movers –Injection Drying Systems –Tenting

Traditional Methods Dehumidifiers –Domestic Refrigerant –Commercial Refrigerant –Low Grain Refrigerant –Desiccants

What Effects The Drying TEMP AIRFLOW Humidity

Surface Free Water Bound Water Temperature Humidity Airflow

The Way Forward ? Traditional –Dehumidification New Technologies –Heat –Speed –Size –Cost

Heat Drying Systems Convection Drying Systems –Open type Heats Air Built in moisture evacuation –Hydronic Heats Liquid Glycol Problems evacuating moisture

How They Work Vapour Pressure –High always goes to low (When it can) Add heat to a wet surface increases its vapour pressure A 10ºC rise in temperature doubles the rate of evaporation

Heat Drying Systems TES System Dryair System Aquadry

Large Drying Systems Large Desiccants –Corroventa –Arid Dry Some add Heat –Concept

New Technologies Environmental Control Units –Heating –Dehumidification –Cooling

Which Method Is Best What are we trying to achieve Are the new systems Best –Where do we use them –Do they have issues Is there still a place for traditional methods

Any Questions Thank You