Developments in vacuum drying and press drying of
Developments in vacuum drying and press drying of
Developments in vacuum drying and press drying of
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Center for<br />
Forest Products<br />
Pr<strong>of</strong>. Dr. Ressel<br />
Introduction<br />
Fundamentals<br />
Plant Facilities<br />
Innovations<br />
Process<br />
Technology<br />
Plant Examples<br />
Brunner<br />
IWT<br />
Mühlböck<br />
Kronseder<br />
Eberl<br />
Opel<br />
HeatWave<br />
Press Dry<strong>in</strong>g<br />
����������� � �� ����<br />
Superheated Steam / Vacuum Dry<strong>in</strong>g<br />
Superheated steam flow <strong>in</strong> convectively heated <strong>vacuum</strong> kilns<br />
Crosswise steam flow<br />
• heat pipes <strong>and</strong> fan at the side <strong>of</strong><br />
the stack side; vertical flow back<br />
<strong>in</strong>to the stack at opposite kiln wall.<br />
One or two fan / heat pipe l<strong>in</strong>es<br />
(e.g., Brunner, Mühlböck, IWT, Kronseder)<br />
• Heat pipes <strong>and</strong> fans on top <strong>of</strong> the<br />
stack (IWT, Mühlböck - former kiln<br />
types)<br />
• Heat pipes <strong>and</strong> fans <strong>in</strong> front <strong>of</strong> the<br />
stack (at both sides), horizontal<br />
steam flow reversal (longitud<strong>in</strong>al -<br />
lateral with WDE / Maspell <strong>and</strong> Eberl)<br />
Lengthwise steam flow<br />
• Heat pipes <strong>and</strong> fans <strong>in</strong> front <strong>of</strong><br />
stack, horizontal steam flow reversal<br />
(small kilns, special corrugated<br />
stickers required, e.g. Mühlböck)
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