Thermal Map of Christchurch
Energy Awareness Week
3 – 8 May 2010
Google Earth satellite photography
Thermal Imagery
Thermography – part of bigger picture
• Sustainable Energy
Strategy for Christchurch
2008-18
• One of 28 initiatives of
Action Plan
• Funding: revenue from sale
of City Council’s carbon
credits to British Gas.
Precedents worldwide
•
•
•
•
Christchurch first in New Zealand
Dunkerque (France) 2004
cities in the UK and USA
Sydney 2009
Example 1: underheated house, no roof insulation.
2 oC ambient temperature
3 oC roof surface
12 oC
Example 2: heated house, no roof insulation.
2 oC ambient temperature
4 oC roof surface
20 oC
Example 3: heated house, insulated roof.
2 oC ambient temperature
2.2 oC roof surface
20 oC
Example 4: heated house, insulated roof,
halogen or incandescent downlights in ceiling.
2 oC ambient temperature
6 oC roof surface
Downlights
20 oC
Example 5: uninhabited house.
2 oC ambient temperature
2 oC roof surface
Probably above 2 oC
Possible range of roof surface temperatures
3 oC roof
2 oC ambient
4 oC roof
2 oC ambient
surface
surface
20 oC
12 oC
2 oC ambient
2 oC roof
surface
Probably above
2 oC ambient
2.2 oC roof
surface
20 oC
2 oC
6 oC roof
surface
2 oC ambient
Downlights
20 oC
Surface temperature
as indication of heat loss
• roof temperature depends on a number of
factors
• major factors: quality of insulation and indoor
temperature
• minor factors (roof material, construction
method, angle, etc)
• individual factors (e.g. downlights, extract fans,
etc)
• indication only!
• to raise awareness and assist.
Next steps:
• Check quality of roof insulation (see check
list http://www.energywise.govt.nz/node/3399
• If improvement required, see government
subsidy information and list of service
providers in Christchurch at
www.energywise.govt.nz
• Call service providers and get free
assessment and quotes
• Get insulation improved
• Enjoy healthier home and cost savings.
Thermal Map is available for viewing
at test site http://thermals.ccc.govt.nz
Guided overviews at City Libraries:
9 am – 12 noon
1.30 pm – 4-30 noon
Monday 3 May
Linwood
Upper Riccarton
Tuesday 4 May
South City
Wednesday 5 May
Thursday 6 May
Friday 7 May
Parklands
Fendalton
Central
Your feedback is welcome
• click on your feedback
• please spend a couple of minutes
completing a survey form
Thermal Map is available for viewing
at test site http://thermals.ccc.govt.nz
Guided overviews at City Libraries:
9 am – 12 noon
1.30 pm – 4-30 noon
Monday 3 May
Linwood
Upper Riccarton
Tuesday 4 May
South City
Wednesday 5 May
Thursday 6 May
Friday 7 May
Parklands
Fendalton
Central