| Air-to-air-heat-exchanger improved
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On the first sight, this air to air heat exhanger looks different. Many other vendors just purchase heat exchangers and built an own unit out of it.
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| Humidity recovery from waste air
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Unitl now, humidity recovery was only with rotating heat exchangers possible, This countercurrent heat exchanger is out of a material to recover also humidty.
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| Mountainbike from wood
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Stefan Paumann brought with his wooden bicycle the most creativ technical project 2004/2005 at the wood technic school in Kuchl. The result is an only 11,8kg heavy mountain bike
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| Cellar demages
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Mr. Göllner explains what sort of demage occurs at bad constructed pipe break throughs in an water proof cellar.
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| Wood protection for outside walls
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The drip remains on the wood treated with Nano Cell wood. The wood remains after the Nano Cell treatment open for damp diffusion.
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