A STEP TOWARDS A CARBON-NEUTRAL FUTURE

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Presentation transcript:

A STEP TOWARDS A CARBON-NEUTRAL FUTURE Passive Houses A STEP TOWARDS A CARBON-NEUTRAL FUTURE

Structure What are passive houses? Development of passive houses Advantages and disadvantages How are passive houses built? Can you upgrade a normal house into a passive house? Where are passive houses built?

What are Passive Houses?

About New construction in residential, commercial projects Well insulated Working with natural resources  achieve low running costs  energy efficient construction  low running costs

Result Impressive system which saves up to 90 percent heating costs Step towards a cleaner world

Development of Passive Houses

Idea and Implementation emerged from a conversation between Professors Bo Adamson and Wolfgang Feist in 1988

The inventors Dr Feist, founder of the Passivhaus Institut and co-originator of the concept Prof. Bo Adamson, co-originator of the concept

Evolution first Passive Houses:Darmstadt (Germany) in 1990 foundation of Passivhaus-Institution (1996) creation of the Economical Passive Houses Working Group (1996) further constructions in Stuttgart, Wiesbaden, Naumburg and Cologne

Expansion further commercializing due to CEPHEUS =>proves the concept in 5 European countries (2000-2001) first passive house in North Amerika, (Urbana, Illinois in 2003) first Passive House to certified: near Bemidji, Minnesota in Waldsee(2006)

Today about 15.000 Passive Houses in Europe including : single and multifamily residences, schools, factories , office buildings and even governmental agencies

Advantages and Disadvantages

Living Comfort

due to the air condition system... very good air quality same temperature in all rooms opening of windows and doors does not have a great impact on temperature

Costs

initial building costs up to 17% higher

equalled out by saved costs for heating

Comparison of energy consumption of different types of houses

on average: equalled out after 21 years

Overall Satisfaction with Passive Houses

“Have your initial expectations been fulfilled until now?”

How are Passive Houses Built?

Expressions U-factors W/(m²/K); R-factors Insulation = Wärmedämmung Installing zones: kitchen, bathroom

Materials Exterior shell: U-factors lower than 0.15 W/(m²K) Windows: triple plane, low-e-glazing 0.8 W/(m²K) Exterior wall insulation: Polystyrol and Mineral wool 0.08-0.14 W/(m²K)

Materials/Methods Roof: mineral wool and cellulose 0.07 W/(m²/K) Installing-zones kept close together Envelope airtightness Heat exchanger Subsoil heat exchanger

Methods Southern orientation Prevensation of shading Usage of solar energy Air traps Security heating

Can you upgrade a house into a Passive House?

construction is not constricted to specific types of buildings  every building can be upgraded into a passive house

Passive Houses very good heat insulation air conditioning to gain heat windows with good heat insulation (heat protection glazing) walls of a passive house are not permeable to air

 You can upgrade every house into a Passive House but the costs and investments are very high.

Where are Passive Houses bulilt? in German-speaking countries in Scandinavia buildings increase mostly Europe,

Thank you for your attention.

Sources http://www.passivhaus-vauban.de/passivhaus.en.html (27/12/09) http://www.passivehouse.com/07_eng/news/CEPHEUS_final_long.pdf (p. 85, 27/12/09) http://www.passivhaus-vauban.de/passivhaus.en.html (27/12/09) www.passivehouse.co.uk/ (06/01/10) www.passivehouse.us/passiveHouse (06/01/10) PassiveHouseInfo.html (01/01/10) http://www.passivehouse.us/passiveHouse/PassiveHouseInfo.html (04/01/10) http://www.passivhaustagung.de/Kran/First_Passive_House_Kranichstein_en.html (06/01/10) http://www.e-colab.org/ecolab/SmithHouse.html (06/01/10)