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RENEWABLE ENERGY
[HOUSE DESIGN]
ÁLVARO DE ANDRÉSEMMANUEL KYERE-FREMPONG
QIAO HE ZHENHUA ZHANG
GORKA BARRIO FERNANDEZ
HOUSE DESIGNOur focus is going to be on
1. architectural design of the house to make the maximum use of the sun energy.
Such as: Location Shape Orientation
HOUSE DESIGN2. Environmental friendly building
materials
3. Economic Consideration
ELECTRIC GENERATION FROM
SOLAR
BIOCLIMATIC ARCHITECTURE
Bioclimatic Architecture
LocationShape of the house Orientation
Bioclimatic Architecture
Active solar collecting
Bioclimatic Architecture
Passive solar collecting – Direct systems – Semi direct systems – Indirect systems
Bioclimatic Architecture
Isolation and thermal mass
Bioclimatic Architecture
Ventilation.– Natural ventilation
Bioclimatic Architecture
Ventilation.– Convective ventilation – Convective ventilation through attic
Bioclimatic Architecture
Ventilation.– Ventilated façade.
Bioclimatic Architecture
Climatic use of soil Stopper rooms. Protection from summer radiation
Bioclimatic Architecture
Earth Translation
Bioclimatic Architecture
Bioclimatic Architecture
ENVIRONMENTAL IMPACT AND
SAFETY
Environmental Impact and SafetyWhen analyzing Environmental Impact
in House Design we must take into account:
Impact produced by the PV Energy System
Impact produced by the Materials used to build the house
EnvironmentalEnvironmental Impact Impact andand SafetySafety
Impact produced by the Building Materials:
We can reduce the impact by using:
A suitable material for the local climate. A healthy and safe material for the
workersworkers, for the inhabitantsinhabitants and for the the planetplanet.
EnvironmentalEnvironmental Impact Impact andand SafetySafety…… by using:
A durable and easily maintained material.
The material efficiently (little transportation and processing, recyclable content)
An easily recyclable material.
EnvironmentalEnvironmental Impact Impact andand SafetySafetyInteresting examples of Green Building Green Building
MaterialsMaterials:
-Straw Bale
EnvironmentalEnvironmental Impact Impact andand SafetySafety
EnvironmentalEnvironmental Impact Impact andand SafetySafety-Straw Bale
* Great insulation properties
* Availability
*Non-toxic
*Needs little processing
EnvironmentalEnvironmental Impact Impact andand SafetySafety-Recycled Cotton/Polyester insulation:
* Made from blue jeans scraps
* Avoid using fiberglass
* Safe product for the workers
EnvironmentalEnvironmental ImpactImpact andand SafetySafety-Autoclaved Aerated Concrete:
* High thermal insulation
* Completely recyclable
* Very durable material
* High indoor air quality
How about is the solar energy of usage present status.
From the 1970s, many million of dollars were invested by governments ,private institution, architectural and solar equipment firms toward the development of practical
Environmental Benefits
Natural disaster costs soar to another world record.
Violent weather cost the world a record $130 Billion in the first eleven months of 1998- more money than was lost from weather related disasters from 1980 to 1990 ($82 Billion).
Environmental Benefits
Researchers from the Worldwatch Institute and Munich Re blame deforestation and climate change from Earth warming for much of the loss. The previous one year record was $90 Billion in 1996. Source - Associated Press, November 28,1998.
Environmental Benefits
Reducing the carbon emission Rising carbon emissions were once
favorably looked upon as a measure of economic growth and development. but now it doesn’t
Solar energy has no carbon emission and other pollutant gases
Solar energy benefit to environment and mankind Solar energy will become a form of
Shell shock
Shell Oil predicts that 50% of the world's energy will come from renewable sources by 2040.
Solar energy benefit to environment and mankind
Solar energy is a clean, safe, renewable resource, that's pollution-free and protects the environment for future generations.
ECONOMIC CONSIDERATION
THE COST
INITIAL COST
OPERATIONAL COST
INITIAL COSTIncluding the fee of equipment, such as
PV panels, mounting hardware, original battery set etc. and the installation fee
Flat collector Costs
Detached house – hot water 5 m²: 25000- 30000 SEK
Comb system 12.5 m²: 50000 - 60000 SEK
Multifamily house: 3000 SEK/m²
Solar district heating: 2000 SEK/m²
OPERATIONAL COST
Including battery replacement and the cost of backup generator power during the winter months
A SIMPLE MODEL
P
Tt
psolar
other
o
M
Why is it so expensive
High cost of raw-materialHigh designing feeLow competitionLong run to pay back
Government’s policy
Why needs the policy support?
reduce the cost of private invest
shorten the time of paying-back
how does it work?
P
T
other
solar
subsidy
GERMANY:TAX-RETURNThe solar products supplier promise
to maintain the same price for 20 years
industry can get the return of about 50 euro cents from the government per kilowatt-hour of electricity output
composed of low-interest loans for 100,000 roofs program
HOW THE POLICY INFLUENCED
Japan: directly finance
70,000 roofs program :
Government finance 50% of the initial cost of the 3-to 4-kW grid-connected residential systems
CONCLUSIONS
Conclusions The initial or the up-front cost of
installing solar panels is very high therefore, making it hard for people to make decision whether to buy it or not.
However, putting it together with the
design and building of the house make more economical and competitive not even considering the environmental benefits.
Conclusions
Further saving could be made by using solar roofing instead of normal roofing materials. The cost of roofing your house would be part of the cost of the solar energy.
Sun Slates (Solar Roof)
ConclusionsFurther more, professor Vivian Alberts
who works at the University of Johannesburg’s department of physics, has developed a revolutionary process to produce solar panels using CIGS (copper-indium-galliumdiselenide) instead of silicon.
The final product is expected to cost a quarter of the price of current solar panels.
Any question?
Thank you!