You read that correctly. Someone is growing bananas in Austria using waste heat recovered from a cold store.
Artist and architect Markus Jeschaunig decided to highlight the enormous amount of energy it takes to provide Austrians with their favourite fruit via supermarkets year round with an unusual installation.
Mr. Jeschaunig decided to highlight the impact that providing bananas, and other tropical fruits, to Austrians causes to the environment. He created an installation using a 'biosphere', or a plastic bubble, on the roof of a small building in between a shop and another building on a street in the town of Graz, Austria.
In the biosphere, he planted plants, which need a tropical climate to grow properly, and heated it using the 5.2 kW of waste heat from nearby refrigeration units. The plants need a temperature over 15° Celsius in winter to grow properly.
DK Heat Recovery provided the kit to extract the waste heat from the refrigeration units.
The ACR Journal visited another DK installation in Skipton last year which uses waste heat for hot water in a farm shop. Read all about it here: How A Yorkshire Farm Shop Uses Refrigeration to Supply Hot Water