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