Featured in Catching the sun – 03-2010

Alternatives for greenhouse gases

Triple green, part 3: Thin film silicon modules are manufactured with process gases that are not only harmful to the environment, but poisonous and explosive as well. Thus gas suppliers are in search of an ecological replacement.

The steel bottle lies in the warm water like a torpedo. Without a sound gas flows into it from the filling station. No hissing, no fog – only a quiet, metallic vibration on the inside of the vessel as Klaus Bomhard opens the valve. “It’s all tight,” determines the head of the filling plant at …

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