Passive Dwelling House Schellenseegasse

172
080603-16.jpg
1 More than a passive house The usual passive house criteria are a means to an end, a way to bring buildings up to a comparable standard and to create favourable conditions for environmentally friendly construction. For the same reasons, the Schellenseegasse concept does not limit itself to these values. Schellenseegasse strives to achieve the passive house limit for primary energy demand. This limit has real environmental relevance. At 66 kWh/m², Schellenseegasse was able to bring primary energy demand down to almost half of the passive house limit of 120 kWh/m²; it did so without incurring costs over and above the normal cost of Vienna public housing, and without any additional research or other funding. The passive house subsidies available in Vienna today were not available when this project was funded. 2 Energy concept In accordance with the passive house concept, heating and cooling energy demand was reduced to a minimum through excellent heat retention in winter and cooling retention in summer. Extremely well insulated walls, windows, and doors, as well as excellent airtightness, mechanical ventilation, and heat recovery helped to achieve this heat retention. The ventilation air is filtered, preheated in a geothermal register, and then further heated in a central heat exchanger. The ventilation ducting also conforms to the concept of common central heat recovery; the heating register, filtration units, etc. are positioned for distributed radiators. The air itself is heated room by room (with the same source of heat as is used for hot water). Going beyond the requirements of the passive house standard, air temperature can be individually regulated in every room. Outgoing air is routed similarly, passing through air ducts in the stairwells to the central heat recovery unit. The roof is equipped with photovoltaic elements (92 m², with a capacity of 11.55 kWp) subsidized by grants from Vienna’s environmental power fund. The building has more than 100 m² of thermal vertical collectors on the south façade and a 4000 liter storage tank for backup heat and hot water (supplementary heating is covered by natural gas). The building is a recognized climate-active (Klima:aktiv) passive house. 2.1 Key figures Specific heating demand: Total average 10.0 kWh/m²a, heating load: 8.3 W/m² specific final energy demand: 21.1 kWh/m² specific total primary energy demand: 66 kWh/m²a 3 Construction costs Net construction costs (according to ÖNORM B1801-1) amounted to approx. € 1,450/m²
Projectnumber :172
Status :Buildings
Link :www.reinberg.net/172
Client :GESIBA
authors :Architect Georg W. Reinberg, Architekturbüro Reinberg GesmbH
Coworkers :Margit Böck, Rudolf Lesnak
Country :Schellenseegasse, Vienna
Type :New buidling
Function :Residential building
Properties :Photovoltaics, Collector, Heat Recovery, Passive solarusage, Active solarusage, Passive house
Planning begin :09/2004
Building begin :18/05/2006
Built :03/2008
Surface Area :1552 m2
Construct. Vol. :10073 m3
Living space :1942 m2
BuildingPrice :3,3 mil. €