Comfortable microclimate with Uponor
The basic heating and cooling of the new Spiegel Group building is realised with the Uponor Contec concrete core activation. Approximately 8,150 m² of the ceiling surface was equipped with the pre-fabricated Uponor Contec concrete core activation modules; the modules are integrated with cross-linked polyethylene pipes (PE-Xa), with a nominal width of 20 x 2.3 mm.
In so doing, the thermal ceiling activation achieves coverage of up to 30% of the base loads. The remaining heating and cooling loads are covered using suspended ceiling panels that are also thermally active. The loads still remaining for climate control are covered using a heating-cooling panel, and in areas with increased cooling requirement, using a conventional air conditioning system. For heating, the energy retrieved from the geothermal system is sufficient to cover the base loads using the concrete core activation as well as the ceiling panels with an intake temperature of 35°C and a return temperature of 30°C. To address demand peaks in secondary areas of the building and for additional heating, district heating is used according to the prevailing demand.
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