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Www.thermolignum.com Workshop Integrated Pest Management (IPM) New perspectives and methodes for insect control Bernhard Schachenhofer Technical basics.

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Presentation on theme: "Www.thermolignum.com Workshop Integrated Pest Management (IPM) New perspectives and methodes for insect control Bernhard Schachenhofer Technical basics."— Presentation transcript:

1 Workshop Integrated Pest Management (IPM) New perspectives and methodes for insect control Bernhard Schachenhofer Technical basics of the Thermo Lignum ® process Brussel 18 th of March 2013

2 The Idea behind the Thermo Lignum Process  Insects (Pests) such as woodworm (Anobium punctatum), moths, carpet beetle etc. are temperature sensitive.  The majority of insects at any of the various stages of their life cycle will die if they are subjected to temperatures between 50°C and 55°C for an extended period.  → Heat up the objects Source: Becker und Loebe 1961

3 The risks of heat treatment  Dimensional change, due to swelling or shrinkage, because of changes in the object moisture content  Excessive temperature differences in the object Damage to objects occurs for two reasons:

4 Context of climat and wood moisture The solution Control relative Humidity during the process

5 The solution  Measure the core temperature  Define a temperature difference  Control the chamber temperature Avoid large temperature differences between surface and core

6 Bring all together Process sheme The Thermo Lignum ® Chamber Technology Treat ment phase warming phaseCooling phase °C time Core temperatur °C - t rh% Cell temperatur °CRelative humidity % < 60°C ≥ 55°C Mind. 1 Std

7 The Thermo Lignum ® process process scheme in a Thermo Lignum ® chamber Treat- ment phase Warming phaseCooling phase t t = 18 – 24 Std Cell or Chamber temperature Core temperatureRelative Humidity t


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