Building Remediation

Demonstration of Energy Saving Techniques in Renovating Old Buildings

The following measures are taken to renovate an old building in order to render it more energy-efficient: General installation of insulation, use of a new transparent insulating compound system, use of new triple glazing (k=0.4 W/m²K), and installation of a flat collector. This has reduced the specific energy consumption from approx. 250 kWh/(m²a) (energy reference area 750 m²) to 54 kWh/(m² a). This represents an energy savings of almost 80%. The annual efficiency of the heat generated by the gas heat value system including solar-heated warm water generation amounted to approx. 88% (detail information in German).

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Source: Federal Foundation for the Environment (DBU)