rdl energy efficiency and new and renewable energy in commercial buildings – new zealand david...
TRANSCRIPT
![Page 1: RDL Energy Efficiency and New and Renewable Energy in Commercial Buildings – New Zealand David F.S. Natusch APEC EGNRET 28, Tokyo, Japan, 29-30 January,](https://reader036.vdocument.in/reader036/viewer/2022082818/56649e8f5503460f94b93901/html5/thumbnails/1.jpg)
RDL
Energy Efficiency and New and Renewable Energy in Commercial Buildings
– New Zealand
David F.S. Natusch
APEC EGNRET 28 ,
Tokyo, Japan, 29-30 January, 2007
Energy Use in Commercial Buildings
![Page 2: RDL Energy Efficiency and New and Renewable Energy in Commercial Buildings – New Zealand David F.S. Natusch APEC EGNRET 28, Tokyo, Japan, 29-30 January,](https://reader036.vdocument.in/reader036/viewer/2022082818/56649e8f5503460f94b93901/html5/thumbnails/2.jpg)
RDL
Energy Efficiency in Commercial Buildings
New and Renewable Energy in Commercial Buildings
Future Initiatives
The New Zealand Profile
Key Points
Energy Use in Commercial Buildings
Coverage
![Page 3: RDL Energy Efficiency and New and Renewable Energy in Commercial Buildings – New Zealand David F.S. Natusch APEC EGNRET 28, Tokyo, Japan, 29-30 January,](https://reader036.vdocument.in/reader036/viewer/2022082818/56649e8f5503460f94b93901/html5/thumbnails/3.jpg)
RDL
Few Significant Applications
• Mainly Passive.
Heat Loss Reduction
• Thermal Insulation,
• Radiation Minimisation.
Temperature Perception
• Wall Colours,
• Heat/Light Capture – Light pipes
Not an Impressive Record!
Energy Use in Commercial Buildings
Energy Efficiency
![Page 4: RDL Energy Efficiency and New and Renewable Energy in Commercial Buildings – New Zealand David F.S. Natusch APEC EGNRET 28, Tokyo, Japan, 29-30 January,](https://reader036.vdocument.in/reader036/viewer/2022082818/56649e8f5503460f94b93901/html5/thumbnails/4.jpg)
RDL
New Zealand started with 100% Renewable Energy
• Firewood,
• Hydroelectricity.
Has gone Backwards in Renewable Energy Use
• Cheaper to use Coal, Gas and Petroleum Products.
Now trying to slow the Decline by Promoting:
• Hydro,
• Geothermal,
• Biogas,
• Wind Power,
• Biofuels.
A Slow Process
Energy Use in Commercial Buildings
New and Renewable Energy
![Page 5: RDL Energy Efficiency and New and Renewable Energy in Commercial Buildings – New Zealand David F.S. Natusch APEC EGNRET 28, Tokyo, Japan, 29-30 January,](https://reader036.vdocument.in/reader036/viewer/2022082818/56649e8f5503460f94b93901/html5/thumbnails/5.jpg)
RDL
Energy Supply, 2005
Energy Supplied PJ Total Renewable
% %
Total Energy 688 100 27
Renewables 184 27 100
Non Biological
Hydro 84 12 46
Geothermal 81 12 44
Wind 2.2 0.3 1.2
Biological 17 2.4 9
Wastes: Sewage gas, Landfill gas, Ag. & Wood wastes
Ag. Crops
Wood Most Renewables non-Biological
Fats & Oils
Energy Use in Commercial Buildings
Current Energy Supply Distribution
![Page 6: RDL Energy Efficiency and New and Renewable Energy in Commercial Buildings – New Zealand David F.S. Natusch APEC EGNRET 28, Tokyo, Japan, 29-30 January,](https://reader036.vdocument.in/reader036/viewer/2022082818/56649e8f5503460f94b93901/html5/thumbnails/6.jpg)
RDL
Energy Consumption, 2005
Energy Consumed PJ %
Total Energy 465 100
Agriculture 20 4
Industrial 136 29
Commercial 49 11
Residential 62 13
Transport 198 43
Commercial Energy use is Minor
Energy Use in Commercial Buildings
Current Consumer Energy Distribution
![Page 7: RDL Energy Efficiency and New and Renewable Energy in Commercial Buildings – New Zealand David F.S. Natusch APEC EGNRET 28, Tokyo, Japan, 29-30 January,](https://reader036.vdocument.in/reader036/viewer/2022082818/56649e8f5503460f94b93901/html5/thumbnails/7.jpg)
RDL
Now trying to slow the Decline by Promoting:
• Energy End Use Efficiency
• Solar – mainly Passive,
• Hydro – micro and mini,
• Geothermal,
• Biogas,
• Wind Power,
• Combined Solar and Wind Power
• Biofuels.
The main initiatives are in Energy Efficiency & Biofuels
Energy Use in Commercial Buildings
Current Initiatives
![Page 8: RDL Energy Efficiency and New and Renewable Energy in Commercial Buildings – New Zealand David F.S. Natusch APEC EGNRET 28, Tokyo, Japan, 29-30 January,](https://reader036.vdocument.in/reader036/viewer/2022082818/56649e8f5503460f94b93901/html5/thumbnails/8.jpg)
RDL
New Zealand has a Maritime Climate
• Few Temperature Extremes,
• Less Heating and Cooling Demand cf. other APEC Economies,
Little Economic Drive
• Energy Efficiency savings are relatively small,
• No Government Subsidies for Energy Efficiency.
Most Energy Conservation Activity in Residential Sector
• Management of Off Peak Electricity for Water Heating,
• Building Insulation
The Economic Drivers are not Strong
Energy Use in Commercial Buildings
The New Zealand Profile
![Page 9: RDL Energy Efficiency and New and Renewable Energy in Commercial Buildings – New Zealand David F.S. Natusch APEC EGNRET 28, Tokyo, Japan, 29-30 January,](https://reader036.vdocument.in/reader036/viewer/2022082818/56649e8f5503460f94b93901/html5/thumbnails/9.jpg)
RDL
• Low Heating and Cooling Demand cf. other APEC Economies,
• Energy Efficiency savings are relatively small,
• No Government Subsidies for Energy Efficiency,
• Most Energy Conservation Activity in Residential Sector,
• Commercial Energy use quite small (11%),
• N & RE use not directed to Commercial Energy Sector,
• Quite high level of N & RE (29%) in the Energy Supply Mix,
• Government Policy to increase N & RE Supply,
• No significant initiatives for Commercial Buildings.
The Economic Drivers are not Strong
Energy Use in Commercial Buildings
Key Points