Thermal Map of Christchurch Energy Awareness Week 3 – 8 May 2010.

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

2 oC ambient temperature

12 oC

3 oC roof surface

Example 1: underheated house, no roof insulation.

2 oC ambient temperature 4 oC roof surface

20 oC

Example 2: heated house, no roof insulation.

2 oC ambient temperature 2.2 oC roof surface

20 oC

Example 3: heated house, insulated roof.

2 oC ambient temperature 6 oC roof surface

20 oC

Downlights

Example 4: heated house, insulated roof, halogen or incandescent downlights in ceiling.

2 oC ambient temperature 2 oC roof surface

Probably above 2 oC

Example 5: uninhabited house.

2 oC ambient2.2 oC roof surface

20 oC

2 oC ambient4 oC roof

surface

20 oC

2 oC ambient

12 oC

3 oC roof

surface

2 oC ambient6 oC roof surface

20 oC

Downlights

2 oC ambient 2 oC roof surface

Probably above 2 oC

Possible range of roof surface temperatures

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 Parklands

Thursday 6 May Fendalton

Friday 7 May 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 Parklands

Thursday 6 May Fendalton

Friday 7 May Central