One of the largest housing cooperatives in Berlin, the housing stock covers a large variety of settlement and building structures from different architectural eras. For the last 15 years the housing cooperative intensified their efforts for the energy efficient refurbishment of the housing stock and the upgrading of the residential environment. The study trip for the ZEROCO2 partnership to Charlotte will be divided into two parts, will visit a Energy efficient modernization (retrofit) of a housing estate Schwendyweg, Spandau. The second part of the study trip will include an example to show the a new housing estate which is currently under construction.
The following provides an overview of the Energy efficient modernization of the housing estate Schwendyweg, Spandau: The building complex was constructed in 1957 and consists of six blocks with a total of 132 residential units. With the measures implemented (from April 2010 till December 2010) 78 percent of the primary energy requirements are saved by the interaction of all measures:
- Complete thermal improvement of the outer building shell in compliance with the German construction requirements of EnEV 2009:
- roof 26 cm insulation,
- façade 14 – 18 cm insulation,
- cellar ceiling: 6 – 8 cm insulation,
- windows with thermal insulation glazing (double and triple glazing) with U-values from 1.1 to 0.9 W/m²K, external air outlets integrated in the windows.
Systems engineering: centralized generation of heat for warm water and heating, hydraulic compensation, basic load heat generation by gas-driven combined heat and power plant, peak load heat generation with a deep cascade that can be modelled from three condensing boilers, centralized power supply providing electricity to the CHP within the building, photovoltaic solar power systems on the roofs of the buildings. In addition, the residential environment has been newly designed. This included a new layground and boxes for four wheeled walkers. The energy efficient building modernization is cost-neutral for the tenants!
There is plenty of knowledge to exchange during this visit and I am sure that ZEROCO2 will benefit from the study tour.
