Transcript Slide 1

Energy Efficient Buildings
The sustainable advantages of
concrete structures
Tom De Saulles
The Concrete Centre / CEMBUREAU
11 February 2009
EU Energy Performance of Buildings Directive
National calculation tools must take account of:
1. Building orientation
2. Thermal capacity of the structure
3. Passive solar systems
Using thermal mass for heating
South
Low sun from autumn to spring
17 to 40º
Using thermal mass for heating
Heat re-radiated
into rooms
Using thermal mass for heating
Useful Heat
100%
75%
50%
25%
0%
CEMBUREAU
Working group setup in 2004 to:
• Evaluate and respond to opportunities
presented by the EPBD.
• Review the effects of thermal mass
in concrete buildings.
Results from CEMBUREAU study
2 - 9% saving in heating fuel for theoretical building
Results from CEMBUREAU study
3 -10 % saving in heating fuel for real dwellings
Average European Energy Consumption for Dwellings
(source www.intuser.net)
Portfolio of Low Energy Concrete Buildings
Examples of passive solar design
Nightingale Estate – East London
St Matthews – Lambeth
BedZed – South London
Millennium Green - Nottinghamshire
Adapting to climate change in Europe
Thermal mass in a warming climate
40
External air temperature
Low thermal mass
High thermal mass
35
30
25
20
15
10
Summer days in 2050
Source: Arup Research and Development
Key points:
When used appropriately, the thermal mass in concrete and
other heavyweight materials can:
• improve a building’s year-round energy efficiency.
• help avoid overheating problems in a warming climate.
For further information go to:
www.europeanconcrete.eu
European Concrete Platform
www.bibm.eu
International Trade Organization of the Precast Concrete Industry
www.ermco.eu
European Ready Mixed Concrete Organization
www.cembureau.eu
The European Cement Association
www.concretecentre.com
The Concrete Centre (UK)