1. KS ENERGY AND SUSTAINABLE DEVELOPMENT GROUP 2.3: LARISSA HAMILTON MANUEL PÖLLINGER CHRISTIAN UNTERBERGER Re-inventing buildings Visions for future building design

2. Introduction Buildings play an important role in our society Austria: nearly 40% of final energy used in buildings Around 80% for providing thermal energy services Changing buildings – key element for improving our energy system

3. Passive Houses What makes it different to “normal” buildings: 1. Special insulation 2. Specific Heating System 3. Particular Ventilation System

4. Passive Houses- Insulation Passive house insulation vs. normal house insulation

5. Passive Houses- Insulation Consists of very thick walls Stuffed with mineral fibrous insulating material Conventional walls consist of bricks Insulating double or triple glazed windows Single glazed windows  energy wasting installation

6. Passive House -Heating Heat pumping systems Solar heating system for heating water Heating by electricity which is generated by photovoltaics

7. Passive House-Ventilation Systems Nearly airproof covering due to insulation Air renewal rate between 0,3 and 0,5 ( measures how much air renewed within one hour)

8. Plus Energy Houses Low need of energy Energy not supplied by electricity providers Higher self-production of energy than use 100-percent regenerative energy supply and emission-free process Excess of self-produced energy fed into public network

9. Plus Energy Houses - Functionality “Save energy and produce a surplus of electricity, rely on solar power and only use regenerative energy!”

10. Plus Energy Houses – Implemented Samples The HeliotropThe “solar settlement” in Freiburg