Green Futures Tuesday: How smart new materials can save energy in old buildings #gfstu

This event in the Green Futures Tuesday series was arranged on February 21st 2012, at 4pm GMT, by the Department of Green Innovations and Solutions.

Tweeter

Anna Simpson

Room

#gfstu

About to start! Green Futures Tuesday: how smart materials can save energy in buildings http://t.co/Zr0ihvrQ Use #gfstu to join in! #gfstu
4:00 PM
1. Retrofits are a balancing act. How can we save energy without compromising space, storage, accessibility, functionality & LOOKS? #gfstu
4:02 PM
2. There are secrets to success: good planning, teamwork etc. But there are also lots of exciting new materials out there. #gfstu
4:02 PM
3. Take insulation for a start. Instead of layers of fluff, try aerogel – a super insulator designed to keep astronauts warm in space #gfstu
4:03 PM
4. As the name [aerogel] hints, it’s over 99% air trapped in a loose silicon-based structure and strengthened by fibres. #gfstu
4:03 PM
5. A strip of aerogel just 9.5mm thick can improve the insulation of a wall by up to 42%, acc to US Dept of Energy. #gfstu
4:05 PM
6. Airtight buildings keep heat in but struggle with humidity and heat. Some new intelligent membranes adapt to changing conditions. #gfstu
4:06 PM
7. pro clima [sic] has developed a vapour-permeable membrane: air- & water-tight, but which responds to humidity. #gfstu
4:07 PM
8. In cold, wintry weather this ‘smart’ membrane is almost entirely impermeable, but in warm weather it allows moisture to escape. #gfstu
4:07 PM
9. Of course, even airtight buildings need some ventilation… #gfstu
4:08 PM
10. Engineers are developing new dynamic insulation systems to ensure fresh air coming into heated buildings is as warm as possible. #gfstu
4:08 PM
11. Energyflo fits insulation panels to the external wall, where air is pre-heated by the sun and by heat escaping through the walls #gfstu
4:09 PM
12. The warm air then rises up the cavity and is channelled into the building through ventilation systems. #gfstu
4:09 PM
14. And then there’s electrochromic glass, which works a bit like Reactolite sunglasses. #gfstu
4:10 PM
15. It can be darkened either automatically or manually to prevent overheating in strong sunlight & let more rays in during winter. #gfstu
4:10 PM
Read more about smart materials for energy efficient buildings @GreenFutures: http://t.co/Zr0ihvrQ #gfstu
4:11 PM
@GreenFutures has produced a whole special edition on #retrofit & energy efficiency in buildings. Free download: http://t.co/DWEFCTmD #gfstu
4:13 PM
What other great solutions are there to make our buildings less costly to run? #gfstu
4:15 PM
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