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Large Heat Pumps in Europe: Nagold innovative heating and cooling system
2018/01/03
Jan. 02, 2018 | Sun and air are providing the free of cost, all-year round, comfortable room temperatures
 
Underneath the parking lot of a new office building in Nagold, Germany, a large, 300 m3 ice-storage tank can be found. It is part of an innovative energy concept, where 100% of the building’s heating and cooling demands are provided by regenerative energy sources. The whole building is heated and cooled via water pipes embedded into the concrete ceilings, always keeping the surface temperature close to the air temperature in the office space, thus providing a comfortable environment, despite the large glass surfaces around the building. The heating and cooling system consists of an ice-storage tank, a large heat pump, and a solar/air absorber mounted on the roof, along with a photo-voltaic installation providing the electricity to power the heat pump. The main heat sources are the 42 roof-mounted solar/air absorbers operating at low temperatures, which produce more energy than classical solar installations, as heat can be collected even on cloudy days.
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