Efficiency house. Building description

Transcription

1 Efficiency house Building description Building use Primary school Construction year 1968 Completion of improving the energy efficiency 04/2011 Living space 1162 m² Numbers of stories 1 Features Address Use of renewable energies Schulstraße 31, Hiddenhausen Before restoration After restoration 1

2 New ceiling with efficient lighting. Energy performance indicators Calculation basis Energy Saving Ordinance (EnEV) 2009 Before restoration After restoration Final Energy demand (QE) 298,7 kwh/m²a 88,8 kwh/m²a Primary energy demand (QP ) 337,15 kwh/m²a 116,18 kwh/m²a Transmission-heat-loss (HT ) 0,971 W/m²K 0,31 W/m²K Lower deviation new buildings standard (EnEV 7 % QP'') Lower deviation new buildings standard (EnEV HT ) 22 % Enveloping surface Enveloping surface of the building 3385 m² A/Ve-ratio 0.73 m-1 Heated gross volume 6857 m³ Heated net volume 5485 m³ Systems engineering Plant expenditure figures

3 Building envelope Outer wall Before restoration After restoration Construction Concrete Concrete Thickness of total wall construction 34,5 cm 52,5 cm Type of insulation Hard-foam boards e.g. Polystyrol Thickness of insulation Fabrication of insulation material U-value Thermal conductivity 16 cm 0,17 W/m²K 0,035 W/mK Total area size of the outer wall 737 m² 737 m² Windows Glazing Double-layer glazing Double-layer glazing U-value window incl. frame 4,03 W/m²K 1,03 W/m²K U-value glazing 2,80 W/m²K 1,00 W/m²K U-value window façade profile 7,00 W/m²K 0,80 W/m²K Manufacturer Product name Schüco AWS 75 Si Window area size 212 m² 212 m² Sun protection The sun protection is Shutters Shutter Exterior doors Type of doors Double glass door Door for low-energy houses Door area size 8 m² 8 m² U-value 4,03 W/m²K 1,10 W/m²K Manufacturer Product name Schüco AWS 75 Si Ground floor s assembly Construction Other Other Thickness of the total floor construction 36 cm 36 cm Type of insulation Mineral wool Mineral wool Thickness of the insulation 8 cm 10 cm 3

4 Ground floor s assembly Before restoration After restoration U-value 0,33 W/m²K 0,33 W/m²K Fabrication of insulation material Roll (e.g. mineral wool) Roll (e.g. mineral wool) Thermal conductivity 0,04 W/mK 0,04 W/mK Top storey ceiling Construction Other Other Thickness of the total floor construction 20 cm 35 cm Type of insulation Hard-foam boards e.g. Polystyrol Hard-foam boards e.g. Polystyrol Thickness of the insulation 5 cm 12 cm U-value 0,52 W/m²K 0,13 W/m²K Fabrication of insulation material Thermal conductivity 0,05 W/mK 0,035 W/mK Systems engineering Heating Before restoration After restoration Heating system 1 Gas packaged boiler condensing boiler Nominal power 160 kw 115 kw Construction year of the system Manufacturer Buderus Buderus Product name SB 315 VM Warm water treatment Type of warm water treatment Central Central Solar thermal installation Solar thermal installation Ventilation Ventilation system Cooling Cooling system Photovoltaic Type of solar cell solar cells based on polycrystalline silicon Area 60 m² Capacity Feed in 25 kwp 6000 kwh per year 4

5 Photovoltaic Before restoration After restoration Type of installation Alignment of the system Roof stands installation South Costs and promoting programmes Total investment costs building (gross) Cost type 300 (building construction) Cost type 400 (technical installations) Cost type 700 (additional building costs) 0 Type of promotion Federal state funds Funding amount Comments Why did you make a decision on an energy efficient house? Stop renovation backlog, role model public property, reduction of costs Are you satisfied with the construction process? What would you change next time? Yes Nothing Parties involved in building Builder Herr Bernd Rick Hiddenhausen Contact possibilities Organisation: Deutsche Energie-Agentur GmbH (dena) Energieeffiziente Gebäude Phone: +49 (0) effizienzhaus@dena.de Web: Related Link 5