passive-house architecture energy efficient building – expert meeting in bratislava june 2007...

Passive-house architecture energy efficient building – expert meeting in Bratislava june 2007

Architect DI. Ursula Schneider

Passive house

up to date building concept for several ranges of

size typeclimate



size – s-m-l

Office natur + lehmArchitektur: ReinbergFoto: Peter Kytlica

Housing MühlwegArchitektur: Dietrich I Untertrifaller Foto: Petra Blauensteiner

Onkel Fred´s HütteArch.: Hertl.ArchitektenFoto: Hertl



type - For new buildings and for refurbishment

School SchwanenstadtArchitektur: PAUAT ArchitektenFoto: Schweighofer

Community center LudeschArchitektur: KaufmannFoto: Petra Blauensteiner



type - housing, office, public, tourist and commercial buildings

Christophorus Haus, (Foto M.Schweighofer)

School SchwanenstadtArchitektur: PAUAT ArchitektenFoto: Schweighofer

SchiestlhouseArch.: pos architekten +TreberspurgFoto: Dorninger

Energy baseArch.: pos architektenrendering: pos architekten



climate – even in extreme alpine conditions



Example energy baseSome details from an innovative passive office building



South facade

Passiv-office building 7.500 m² usable floor area

For offices, research and educational institutions dealing with renewable

energywww.energybase.atENERGY base Giefinggasse 6, 1210 Wien

ENERGY base

Main issues

Energy efficiencyPassivhousestandardUser‘s comfortthermal, hygric, visual comfortUse of renewable energySolarenergy and geothermal energyecologyLight weight wooden exterior wall, use of ground water for toilets



section

Solution plan – floor plan, zoning

Cell offices, north

Open aisle

Archive and auxiliary space, variable width, depending on site

Open office space, south

3 storey void space

botanicalbuffer



Energy efficiency: Passivhousestandard, retaining of heat

30 m³/pers.

Necessary ventilation rate

75% 25%

Lüftung mit Wärmerückgewinnung

Passivhousestandard:

1.Retaining of thermal energy, minimizing the losses

26 cm thermal insulation,triple glazing

Ventilation system with 75% heatrecovery

Airtight envelope/no unrwanted infiltration of air

Avoiding thermal bridges

2. Solar gain



twofold active Solaruse

570 m² Photovoltaik elements 300 m² solar panels for solar cooling

0 1000 2000 3000 4000 5000 6000 7000 80000

200

400

600

800

1000

1200

Stunde des Jahres

Solarstrahlung auf vertikale Südfassade Solarstrahlung auf vertikale Nordfassade

W/m²

0 1000 2000 3000 4000 5000 6000 7000 80000

200

400

600

800

1000

1200

Stunde des Jahres

Solarstrahlung auf PV Paneel Solarstrahlung auf Südfassadenverglasung

W/m²

hours/year

hours/year

solar radiation on vertical south facade solar radiation on vertical north facade

solar radiation on PV panel – solar radiation on glazing-

Solar energy balance, vertical / folded facade

New type of solar south facadeSolar Gain south facade

twofold passive Solaruse

Directly into southzone, indirectly via ventilation system into north spaces



sun

fresh air exhaust air

heat exchange

delivery air

delivery air

delivery air

Recherche, controle ventilation facade par CFD (computational fluid dynamics)3 storey void space and routing of air flow

Konturplot des Strahlungswärmestroms, erstes Band in [W/m²], mit Verschattung



Renewable energy: strategy of heating and cooling with groundwater

Free cooling with ground water

40 m³/pers.

20°

Bauteilaktivierung

35 m³/pers.

Ground water heat pump

Bauteilaktivierung

23°• ;



Operative Temperaturen der Zellenbüros Nord in Abhängigkeit von der Außenlufttemperatur- operative temperatures of cell offices north in reference to the exterior temperature

Operative Temperaturen der Bürozone Süd in Abhängigkeit von der Außenlufttemperatur- operative temperatures of south office area in reference to the exterior temperature

Outside temperature Outside temperature

year:I-office2 year:I-south2

Operative inside temperatures

Better architecture for better comfort



Endenergie Primärenergievergleich comparison of primary energy

comparison of energy sources between viennese commercial building standard

and sunny research

0

20

40

60

80

100

120

140

commercial buildingaccording to building

viennese standard

innovative commercialbuilding sunny research

ener

gy c

ontri

butio

ns [k

Wh/

(m²a

)]

gas

photovoltaic current

electric current

comparison of energy sources between viennese commercial building standard and sunny research

Quelle: Haustechnik Planungsgesellschaft arsenal research

Primärenergiefaktoren lt. Gemis 4.0 Österreich:Erdgas 1,1

Wienstrom 2,7

85 % energy savings compared to Viennese building standard 2007

ENERGY base needs : Endenergy: electric current

25 kWh/m²,a el. current for heating, cooling, ventilation, light, auxiliary energy

1/3 are produced on the building,

Energy base uses 16,8 kWh/m²a electric current from the net

Normal new office buildings use this amount of energy for lighting only



Eco-humidity by plant generator

Sunny research

Behaglich

noch behaglich – still comfortable

Standard building

- Air temperature

- A

ir h

um

idit

y

uncomfortable

uncomfortably dry



Konturplot der CO2 Verteilung [ppm] auf einem Schnitt bei Z = 6 m, 12. September

Air flow and user oriented comfort



Cross border cooperation?



Cross border cooperationCan be that

Slovakian Investors look for Austrian consultants for green-building-design and project controlling.

Slovakian Planners look for Austrian partners as consultants for eco design

Austrian architects look for slovakian partners To run high quality planning for projects in South-East-Europe

Austrian Architects look for high quality and affordable price building components and services



So let´s start building cooperations

Construction site energy base Vienna, Arch. pos architekten

passive-house architecture energy efficient building – expert meeting in bratislava june 2007...

Documents

ursula schneider passive

architect di

energy base giefinggasse

dorninger energy base

ursula schneider climate

pos architekten slide

hertl slide

pauat architekten foto