IG S. Design & Operation. of Energy Efficient Buildings. Univ. Prof. Dr. -Ing. M.N. Fisch. IGS Institut für Gebäude- und Solartechnik TU Braunschweig

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1 Design & Operation of Energy Efficient Buildings

2 our motivations in research and development - Sustainable refurbishment of city quarters - Energetic optimizing operations buildings on test stand - Net-surplus energy buildings building as power plant! - Climate-neutral- residential and commercial quarters - Export: energy efficiency + using of renewable energies Made in Germany

3 our motives in research and development Energy optimized buildings (EnOB) R+D- Programme BMWi

4 EnOB- a program with big success!! Project period:

5 design construction - operation concept design process construction cycle of innovation realisation quality control monitoring, evaluation optimizing operation

6 Regionshaus, Hannover ZZB Berlin Informatikzentrum TU - BS EnergieForum Berlin

7 Primary- energy consumption < 100 kwh/(m 2 a) CO 2 neutral energy supply Arch. Schulte- Frohlinde, Berlin

8 CO 2 - neutral energy supply Solar panel converter sun Eco electricity biogas BHKW BWboiler heat storage KKM AKM cooling storage district heat

9 oriented glazing + sun shading (2) (3) (4) (4) (5) (5) (1) Sun protection glazing: g 0,34; = max N (1) south-west facade (2) glazing: sun protection glazing sun shading: (1) east facade external (2) glazing: sun protection glazing sun shading: external (1) north-west facade glazing : a) EG + 1.OG thermal glazing b) OG sun protection glazing sun shading: interior (2) Courtyard facade glazing: sun protection: sun protection glazing external (3) Courtyard facade glazing: a) EG (1.+2.OG) thermal glazing b) upper level. sun protection glazing sun shading: interior

10 office headquarter building Sun protection glazing (SSV), external sun shading (SS) with daylight control SSV, external SS with daylight control office south-west distribution Concrete core cooling distribution mech. ventilation distribution electricity office north-east courtyard ZU AB Base light window ventilation mech. ventilation work light underground convector

11 wood - element facade integrated heating vacuum isolation panel (VIP) Mock-up Bottom channel isolation Ventilation panel with VIP (vacuum-isolation-panel) and acoustic panel awning fins heating - convector breast panel with VIP (vacuum-isolation-panel) controler wood - profile

12 Solon, Berlin (2008)

13 Solon, Berlin (2008)

14 Open Space Arbeitswelten Mobile Desk --- E - Shuttle

15 the cooperation of architecture and enerydesign is working! [kwh PE /(m² NGF a)] 250 Solon AG Verwaltungsgebäude Vergleich Jahres-Primärenergie nur Betrieb comparision of the primary energy (year) for building operating gesetztes aim Ziel * measurement Messung * reference Referenzwert value DIN18599 * (Annahme) * Die the Jahres-Primärenergie primary energy (year) setzt includes sich thermal zusammen energy aus (complete), Wärme (Gesamt), cooling Kälte energy (Gesamt) (complete) und and Strom electricity (Beleuchtung (lightning und +ventilation) Lüftung)

16 general results High energy efficiency is possible (traget value: PE < 100 kwh/(m²a)! Good user comfort is reachable! No higher building costs (KG : /m² NGF pre-tax) Regionshaus Hannover PPP (KG : /m² NGF pre-tax) The buildings need quality control for the period of developement, building and operating!

17 reality. performance in operating? EVA Evaluation of energy concepts WKSP heating/coolingstorage in basements DEAL local outwall integrated ventilation systems TwinSkin twin facades in practice

18 Yearly heat consumption (kwh/(m²a)) IG S Yearly electricity consumption per gross area (kwh/(m²a))

19 Jahres-Primärenergieverbrauch kwh/(m² NGFr *a) IG S energy- optimized building comprehensive concepts demanding new requirements for design, construction, commissioning and operation New Office Buildings Jahres-Primärenergieverbrauch Mittelwert: 349 kwh/(m² NGFr a) * EVA-Gebäude Wärmeanteil Stromanteil Mittel

20 Primary energy consumption [kwh/m²a] IG S...Energy efficiency Made in UAE Green Building- Theorie und Praxis DIC Bur Dubai Deira German average of new office buildings Office buildings in UAE German energy efficient office buildings

21 optimizing operations optimisation: New building control technology Modification of local ventilation systems results: better comfort reduction of energy consumption Reduction of energy cost per year: ca / year

22 Primary energy consumption [kwh/m²a] IG S average saving by optimization potential 30-40% equipment 100 operation R+D buildings (EnBau) new commercial buildings (EVA) with optimized building operation (EnBop)

23 . Net surplus energy??? Annual balance: From energy consumtived to a energy generated building Life cycle: Energy pay back time is smaller than the buildings lifetime

24 Net-Surplus energy building, DSM, e- mobility

25 for a future society? energetic Smart Grids Virtuel power stations Smart Homes Smart Buildings E- Mobility

26 Integrale energy concept Active Utilisation solar energy Photovoltaik Solar heat Passive utilisation solar energy 2/3 Outdoor air E-mobility 1/3 Geothermal probe 50 %

27 structural-physical excelent external envelope. Uvalue roof ca. 0,12 W/(m 2 K) Uvalue window < 0,9 W/(m 2 K) Uvaluewall ca. 0,15 W/(m 2 K) Uvalueground ca 0,3 W/(m 2 K)

28 glazing - sunshade - south side Triple WSV (VSG/ESG/VSG) U = 0,8 W/m²K g = 0,48 t = 0,69 Sunshade lathflat 100mm rope guide Antiglare VUNO inside Triple SSV (VSG/ESG/VSG matt weiß) U = 0,7 W/m²K g = 0,35 t = 0,6 WSV : heat absorbing glass g SSV : sun protection glazing VSG : laminated safety glass ESG : temperad safety glass FL : float glass Triple SSV (VSG/ESG/VSG) U = 0,6-0,7 W/m²K g = 0,35 t = 0,6

29 HVAC- concept Power source Low temperture - heating controlled Air conditioning E- heat pump Heat source

30 EnEV- proof 2009 Annual requirement of primary energy Q P in kwh/(m²a) Spez. Loss transmission H T in W/(m²K) EnEV account Calculated building characteristic 104,2 34,3 (33 %) 0,54 0,27 (50 %)

31 Demand site management - DSM

32 electricity supply, sunny winter day

33 electricity supply, night

34 Utilisation of own electricity in % IG S Cumulation utilisation of own electricity....energy charge- management + electricity detention freezer Heat pump Potential electricity consumers

35 Surplus-Energy + IG S Süd- und Ostansicht (Ende August 2010) E- Mobility

36 We believe in the sun and our visions!!!