Frankfurt's Turmcenter is a trendsetting solar-cooled building

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The new energy design of the Turmcenter Frankfurt significantly increased the energy efficiency of the high-rise building.

From a concrete skeleton structure to an exemplary green building: the Turmcenter Frankfurt, with its impressive design for sustainability and energy efficiency, is situated in Eschersheimer Landstrasse.

It was constructed in 1970 but left vacant with its core removed from 2005, then Drees & Sommer developed a sustainable energy concept in the framework of its general mechanical, electrical and plumbing (MEP) planning and thus enhanced the value of the building by markedly improving the efficiency and attractiveness of the rooms. The company's experts also supported the client in obtaining a LEED Gold sustainability certification for the building. At the end of 2018, the British private equity investment company Benson Elliot sold the revitalized 74-meter office tower to the Swiss UBS for a private wealth mandate.

The new energy design aims to make the best possible use of the existing energy potential and renewable energy throughout the year. It is the first office building in Germany to use the whole of its glass façade as a year-round energy collector. In the winter and the transition seasons, the Turmcenter Frankfurt uses the building's internal energy transfer and storage system. The sun's heat from the side facing the sun is transported to the shaded side of the building, allowing the rooms to be heated naturally. In addition, excess heat from south-facing IT and conference rooms is transferred to north-facing areas. In combination with solar thermal energy, a heat pump, recycled heat from the sun and the excess heat from rooms, 90 percent of the heating is provided from regenerative sources.

Using the sun for cooling in the summer

The Turmcenter Frankfurt plays a pioneering role in Europe because 65 percent of the cooling in the building is powered by the sun. Even in the summer, the solar radiation is upcycled via a solar thermal installation on the roof and used to produce regenerative cooling. The excess heat which arises from the cooling ceiling system is also used to generate cooling energy and for the ventilation system. Thus, the Turmcenter Frankfurt harnesses its energy and excess heat potential all year round, and it feeds this potential back into the building via energy recycling or upcycling.