An unique experiment is currently underway in Seelisberg: a construction physicist from Lucerne had Empa researchers install six cubic meters of special concrete in the garage of his vacation home. The concrete stores heat during the summer and releases it in the winter as and when needed. The system enables the house to be heated for weeks – sustainably and ecologically.

See the whole story (pdf)
Pictures can be downloaded here.

Video «Wunderbeton als Wärmespeicher» (German language), SRF Einstein, 12.03.2015

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