Green or Greenwash? - Paul Cayford
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TBLI Conference - Workshop 11 - 11.11.11 Rettofitting and Green Real Estate Green or Greenwash ? Paul Cayford RIBA Cayford Architecture Ltd
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TBLI CONFERENCE™ EUROPE 2011- London - United Kingdom TBLI CONFERENCE™ is the prime annual global networking and learning event on Environment, Social, Governance (ESG) and Impact Investing.
Transcript of Green or Greenwash? - Paul Cayford
TBLI Conference - Workshop 11 - 11.11.11
Rettofitting and Green Real Estate
Green or Greenwash ?
Paul Cayford RIBACayford Architecture Ltd
Natural shading
The reality of ‘green’ building & retrofit !
The science !
Full team integration
Commissioning Client
DesignersEngineers
Project ManagersContractors
Site workers Facilities Managers
Occupiers
Real Estate
Get used to a new aesthetic – simple form ?
Locally appropriate building forms
What is the ecological payback time for an ‘eco’
development such as this?
What are real aspirations ?
Data courtesy Ian Pegg/ Buro HappoldRecent measured energy performance of five ‘low-energy’ school academies
Headline Energy Figures
0.00
50.00
100.00
150.00
200.00
250.00
300.00
School A School B School C School D School E GoodPractice
Typical
kWh/m
2
Gas total
Year elec kWh
*Note All data corrected to account for varying degree days
Energy Consumption
Electrical Loads - Normalised
0
5
10
15
20
25
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Time
Ele
c lo
ad W
/m2
Bex day
Brent day
Ken day
Data courtesy Ian Pegg/ Buro HappoldRecent measured energy performance of five ‘low-energy’ school academies
Electrical Loads over 24 hours
Numerous accreditation organisations
Global reachData courtesy BRE
It is expected 50-70% of existing buildings will still be in use in 2050, in rich countries
We should focus on retrofitting existing cities for a low carbon future?
Thermal image showing Passivehouse overcladding
Simmonds Mills: Architect Builders
External cladding often not possible:Internal solutions are required
Much heat is wasted in power generation & transmission
Use waste heat from power generation - District heating
(half of Sweden & Denmark uses district heating)
Investment in: district heatingPaul Cayford RIBA. TBLI Workshop 11 - 11.11.11
The thermal conductivity of aerogel silica is typically 0.018 W/m K at 10 degrees C
Investment in: super-thin insulationPaul Cayford RIBA. TBLI Workshop 11 - 11.11.11
Phase change materials – for building insulation
Investment in: phase change materialsPaul Cayford RIBA. TBLI Workshop 11 - 11.11.11
Efficient pleasant retro-fit lighting
Investment in: low-energy retrofit lightingPaul Cayford RIBA. TBLI Workshop 11 - 11.11.11
Solar thermal, & storage
Investment in: solar & electrical storagePaul Cayford RIBA. TBLI Workshop 11 - 11.11.11
