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Yeşil Barış HareketiCYPRUS GREEN ACTION GROUP
Yeşil Barış Hareketi
CYPRUS GREEN ACTION GROUP
1988www.yesilbaris.eu
0090 533 865 5465
Yeşil Barış HareketiCYPRUS GREEN ACTION GROUP
“ZERO” ENERGY BUILDINGS
Doğan SAHiR
Cyprus Green Action GroupNovember 27, 2009 - LEFKOSA
www.yesilbaris.eu
ASİT YAĞMURLARI YAŞAMI FELÇ EDİYOR.
What determine the climate change and our common future?
1. The way we live
2. How we invest
3. Use of energy
4. Tansportation
5. How we treat forests
The way we live:
1. No adequate awareness towards environment
2. Recycling is almost zero
3. No one bothers the climate change
4. Extravagancy in everything
5. Living isolated, almost means living outside the planet earth.
How we invest:
1. Construction peaked in 2006 as %68.1 in “Real Growth Rate”
2. 20 000 houses are still waiting to be sold
3. ≈ 500 000 olive and carob trees and several hundred thousand others are being cut
4. ≈ 15 500 beds in tourism and growing everyday; the target is over 70 000 beds
5. The occupancy rate of our hotels is %32.1
6. Thousands of cars are dud in auto galleries
7. We keep building huge roads everywhere
8. We don’t have any physical plan for our country
Use of energy
1. All Energy production is from fossile fuels
2. %44 of energy is used by houses
3. Extravagancy in the use of energy
4. Only a little use of sun energy to heat water
5. No isolation in buildings
Tansportation:
1. Registered wehicles: 240 000
2. A car for every 2 persons
3. No sufficient public transportation
4. TRNC is the world champion in selling BMW cars
5. Petrol consumption is 73,000 bbl/day
How we treat forests:
• Ideal rate of forest area/country = %30• Reistered forest land is 64 313 h (%19,42)• 60 934 h (%18,4)• 3 379 h (%1,02)• Productive forests 16 596 h (%27,23)• Functioning forests (%4) & lacking (%26) • We can still invest on forest land & keep using it
with any purpose instead of planting on it
KURAKLIKLIK
ÇÖLLEŞME
What can be done?
• Changing the living style• Reduction of CO2 emissions• Use of renewable energy• Adapting the world• Cooperation between NGOs, governments and
individuals
Energy Smart Buildings
Net Zero Energy Building- on average, generates as much energy as on-site where needed
Carbon Neutral Building- has a net zero carbon footprint with net zero carbon emissions. • On-site energy generated with renewables. • No fossil fuels. No GHGs.
Passive House Standards
• Highest energy standard, reducing heating energy consumption by 90%• Heated primarily by passive solar gain and internal gains from people and household equipment• Super insulation with air-tight shell (≤ 0.6 ACH @ 50 pascal pressure, measured by blower-door test)• Limitation of thermal bridging (≤ 0.01 W/mK)• Additional heat source generally not needed; no furnace or HVAC
19
A thermal picture is worth a 1000 words
It looks OK
But it’s totally unprotected from cold and heat
Infrared images assess heat leakage-Conventional building on left and Passive House on right
Another 1000 words
The wall looks good …
… but we can see the location of the apartments due to poor insulation
22
This is how walls are insulated
Internal cavity wall insulation is feasible when building a new house
External wall insulation is feasible both when building a new house and for existing houses
23
Some ideas for roof insulation
Thermal insulation of roof may be very easy to apply
Thermal insulation of flat roofs may be also very easy to apply
There are solutions for every case
Green roof
Thermal insulation below a wooden floor or roof
Energy efficient doors and windows
• Simple metal or poor wooden window frames and single glazed windows lose heat in two ways:
• due to their poor insulation properties; and• due to uncontrolled movement of air through gaps and
loose fittings.• In summer the window panes augment the heat of the sun’s rays that
enter the home.
• The solution is:
• Double glazing• Good quality window/door frames
Sun protection and bioclimatic architecture
• Sun entering the building is desirable during winter and an unwanted source of heat during summer.
Traditional architecture was respecting bioclimatic principles….
…the modern architecture is not.
27
How improved regulations reduced energy demand in Germany
Reduction of annual heating energy demand in single house as a result from improved regulations
Annu
al h
eatin
g en
ergy
dem
and
(kW
h/m
2 a)
50
100
150
200
250
300
350
1950
1960
1970
1980
1990
2000
2010
Best practice
Regulations
SONUÇ:
• Increase in energy demand• Pollution • Global warming • Energy chaos • Drought and arid lands• Food chaos• Financial chaos
Before getting too late;
Attention !
Zero Energy Buildings
• Reduce total energy use of buildings
• Achieve zero net GHG emissions in all buildings and homes.
• Produce 10% of total energy used on-site renewable sources and clean district energy systems.
35
Heat losses during winter
• Thermal insulation, good quality double glazed windows, and controlled ventilation can reduce these losses by as much as 50%, thus reducing the heating costs.
WINTER HEAT LOSSES
WINDOWS10%-20%
ROOF 25%-40%
WALLS 15%-25%
FLOOR 10%-20%
LEAKAGE15%-25%
In winter buildings lose heat through walls, windows, doors, floors, roofs and ventilation.
36
Heat gains during summer
• Thermal insulation, shading, brightly coloured external surfaces and controlled ventilation greatly enhance your comfort. This also helps to drastically reduce the bills you pay to run air conditioners.
SUMMER HEAT GAINS
WINDOWS25%-35%
ROOF 25%-35%
WALLS 15%-25%
FLOOR 10%-20%
LEAKAGE5%-15%
In summer heat penetrates through poorly insulated walls and roofs, sun radiation though windows and ventilation.
37
Elementary bioclimatic principles. That is what we need
• Summer sun is higher than winter sun. So that clever shading will not obstruct the winter sun.
Summer Sun
Winter Sun
Summer Sun
Winter Sun Insulation
38
Internal shading is not the best solution !
• Curtains or shades placed inside a window reflect only part of the solar radiation.
• Once the sun penetrates the windows the rest of the heat is trapped behind the shades, raising the overall temperature in the room.
• Use external shading systems, such as shutters, preferably adjustable to allow greater sun access during winter. These can reduce direct radiation by up to 90%.
39
Low- emissivity glasses
• Low emissivity glass (or low emissivity coating on the glass) reduces radiation, without significantly reducing the level of lighting.
• During winter however, these also reduce heat gain from the sun.
40
Deciduous trees, a clever option
• Deciduous trees, planted very close to the building, provide shadow in summer and do not block the winter light.
SUMMER WINTER
Average comfortable room heat = 21 C0
• Average heat of soil in Cyprus = 17 C0
• Weather heat in winter = 3 C0
21-4 = 18 C0 need to reach to comfortable room heat
>By using geothermal energy of soil, you can increase the heat of the air up to
arround 15 C0 You save 2/3 of energy
• Weather heat in summer = 44 C0
44-21 = 23 C0 need to decrease to comfortable room heat
>By using geothermal energy of soil, you can increase the heat of air to be up to
arround 26 C0 You save 1/4 of energy
Oregon Sustainability Center
Mercy Housing Project- The 520H Aeroturbine units are horizontally mounted on the roof and designed to optimally capture wind energy.
What to pay attention:
• Quality of design team• Building as a living organism• Natural ventilation and lighting• Recyclable or recoverable materials• Use of facade for energy optimisation• Adaptive energy control systems• Cogeneration, look to recover losses elsewhere• Educated occupants aware of their impact on energy
consumption
What to do:
• Building design- Natural ventilation- Façade• Orientation• Photovoltaics• Passive solar• Window materials• Water efficiency• Landscaping/choice of
vegetation can improve energy and water efficiency
• Energy consumption criteria
• Engineering design- Air-conditioning- Regulation/approval- Quality- Integrated heating/cooling
• Incentives- Energy incentives/penalties- Energy performance
• Control/regulate developers & reward/encourage consumers
• Easy living• Increase your living quality• Save % 50 of energy• Healty living• Decrease carbon footprint
What to do:
THANK YOU...
Yeşil Barış HareketiCYPRUS GREEN ACTION GROUP
Yeşil Barış Hareketi
CYPRUS GREEN ACTION GROUP
1988www.yesilbaris.eu
0090 392 0533 865 5465
Yeşil Barış HareketiCYPRUS GREEN ACTION GROUP
