Energy Efficiency made in Germany

www.efficiency-from-germany.info

The Export Energy Efficiency Initiative in Germany

April 2nd, 2012 in Ljubljana, Slovenia

Antje Kramereclareon GmbH Management Consultantson behalf of the Federal Ministry of Economics and Technology

Energy Efficiency made in Germany

www.efficiency-from-germany.info

On the Importance of Energy Efficiency in Buildings

Final energy consumption in Germany 2010

Source: dena, 2011

Electric appliances and lighting: 15 %

Hot water: 13 %

Heating: 72 %Households: 28 %

Industry: 28 %

Trade: 16 %

Transport: 28 %

Share of energy consumption in households and commercial buildings in Germany

75%

13% 12%

0% 0%

33%37%

0%

19%

11%

Heating Lighting Hot Water Cooling Services

Households Commercial Units

Source: BDEW

Energy Efficiency made in Germany

www.efficiency-from-germany.info

How to implement energy efficiency in buildings?

Energy efficiency aspects in buildings

1. Geographical position

Source: Brochure „Bauen für die Zukunft“, published by

German Energy Agency (dena)

1. Geographical position

Source: Brochure „Bauen für die Zukunft“, published by

German Energy Agency (dena)

Northward windows higher energy needs

Exposed position energy losses through wind Shadow

makes passive use of solar radiation impossible

Energy efficiency aspects in buildings

2. Type of building

Source: Brochure „Bauen für die Zukunft“, published by

German Energy Agency (dena)

1. Geographical position

2. Type of building

Source: Brochure „Bauen für die Zukunft“, published by

German Energy Agency (dena)

kwh/m² p.a.

Single-family house

End-terrace house Mid-terrace house

Comparison of primary energy need of different types of (new) buildings

Energy efficiency aspects in buildings

3. Building materials and insulation

Source: Brochure „Bauen für die Zukunft“, published by

German Energy Agency (dena)

2. Type of building1. Geographical position

3. Building materials & thermal insulation

Windows 13%

Ground 7%Thermal bridge 5%

Roof 30%

Walls 25%

Ventilation 20%

Source: Brochure „Bauen für die Zukunft“, published

by German Energy Agency; original source from „eza!“

3. Building materials & thermal insulation

The same insulation effect have:

Insulating material

Aerated concrete or light honeycomb bricks

Coniferous wood

Straw clay

Full clinker

Concrete

Energy efficiency aspects in buildings

4. Windows

Source: Brochure „Bauen für die Zukunft“, published by

German Energy Agency (dena)

3. Building materials and insulation

2. Type of building1. Geographical position

4. Windows

Source: Ludwig Häussler GmbH

Source: IWU

Layer reflecting heat

Surface temperature of window: +15,7°C

Surface temperature of window: -1,0°C

Energy efficiency aspects in buildings

5. Ventilation Source: Brochure „Bauen für die Zukunft“, published by

German Energy Agency (dena)

4. Windows3. Building materials

and insulation

2. Type of building1. Geographical position

Simple form of ventilation  Mechanical extract ventilation (MEV)

Mechanical ventilation with heat recovery (MVHR)

5. Ventilation

6. Heating systems Source: Brochure „Bauen für die Zukunft“, published by

German Energy Agency (dena)

Energy efficiency aspects in buildings

5. Ventilation

4. Windows3. Building materials

and insulation

2. Type of building1. Geographical position

Combined heat and power unit (CHP)

Wood heating Solar thermal heating Heat pump

Source: GMW Ingenieurbüro, 2007

6. Heating - several options to use Renewable Energies

7. Quality of planning, design and installation

Consulting & Support

Planning

Installation

After-sales quality

assessment

Source: WIKIPEDIA, Lutz Weidner, PHI & Scherz &Scherz Architekten

Energy efficiency aspects in buildings – DevelopmentsNot Insulated Building Passive House

Energy efficiency aspects in buildings – DevelopmentsPlus Energy House

Source: Wikipedia, www.das-energieportal.de

Zero Energy House

Energy efficiency made in Germany

www.efficiency-from-germany.info

The Companies

Participating German Companies

Company Representative

Hock GmbH & Co. KG Blaž Primožič

PBW - Planungsbüro Wahlbuhl Thomas Wahlbuhl

Architekturbüro für Energieberatung und Energieeffizientes Bauen Elvira Fischer-Zvizdic

LUNOS Lüftungstechnik GmbH für Raumluftsysteme Milan Kuster

Knauf Insulation GmbH & Co. KG Barbara Hafner

Testo AG Matjaz Ponikvar

Energy Efficiency made in Germany

www.efficiency-from-germany.info

Thank you for your attention!

eclareon GmbHAntje KramerLuisenstraße 4110117 BerlinTel: +49 30 246 286 90Fax: +49 30 246 286 94Internetseite: http://www.eclareon.com