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RENEWABLE ENERGY

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by

Anna Teke

on 2 May 2016

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Transcript of RENEWABLE ENERGY

MY IDEA
Renewable energy is energy which can be obtained from natural resources that can be constantly replenished.
Renewable energy technologies include technologies that use—or enable the use of—one or more renewable energy sources. Types of renewable energy technologies include:

bioenergy

geothermal energy

hydropower

wave ocean energy

solar energy

wind energy
DEFINITION
OF RENEWABLE ENERGY
this definition is taken from:
Australian Renewable Energy Agency

http://arena.gov.au/about-renewable-energy/
SOLAR ENERGY
DEFINITION OF
PV PANELS

THE SOLAR ENRGY:

energy derived
from the sun in the form of solar radiation.
PV PANELS:

Photovoltaic (PV) devices generate electricity directly from sunlight via an electronic process that occurs naturally in certain types of material, called semiconductors. Electrons in these materials are freed by solar energy
this definition is taken from:

SEIA
Solar Energy Industries Association
http://www.seia.org/policy/solar-technology/photovoltaic-solar-electric
I think everyone supports the idea of
renewable energy, as I do. Because it can replace
the fossil fuels, that pollutes our planet.
We use energy, in our daily life, continuously.
But do we know where it comes from or how is it made?
Environmentally Friendly: PV panels provide clean – green energy.
Renewable: Solar energy is energy supplied by nature – it is thus free and abundant!
Good Availability: Solar energy can be made available almost anywhere there is sunlight.solar energy can be used in remote areas
Silent
low maintanence
reduces electricity costs
ADVANTAGES OF USING PV PANELS
who support my idea
http://www.renewableenergyworld.com/ugc/blogs/2012/12/advantages-and-disadvantages-of-solar-photovoltaic-quick-pros-and-cons-of-solar-pv.html
"Photovoltaic systems (PV systems) undoubtedly constitute one of the most promising renewable green energy technologies as they are a means to explore the naturally replenishable solar energy and generate electricity."
Dino Green is a Mechanical Engineer
WHAT DOES HE THINK ABUT THE PV PANELS?
WIND POWER
Wind power is form by the energy conversion in which turbines
convert the kinetic energy of wind into mechanical or electrical energy that can be used for power.

Written by:
Noelle Eckley Selin
this definition is taken from:

ENCYCLOPAEDIA BRITANNICA
http://www.britannica.com/science/wind-power
DISADVANTAGES OF USING PV PANELS
Who is against my idea


solar cells are hardly clean. They contain heavy metals that can leach into groundwater when disposed at the end of their lifecycle
it takes power to make power
Solar cells rely on fossil fuels for fabrication, installation and maintenance
Intermittent: solar energy can only be harnessed when it is daytime and sunny
Expensive
http://eandt.theiet.org/magazine/2013/02/debate.cfm
Ozzie Zehner is a professor at UC Berkeley
he wrote the book:
‘Green Illusions: The Dirty Secrets of Clean Energy and the Future of Environmentalism’
WHAT DOES HE THINK ABUT THE PV PANELS?
"Solar cells may be marketed as green, but they are harmful to the environment and human prosperity for several reasons."
NO
RENEWABLE ENERGY
ADVANTAGES OF USING WIND POWER
who support my idea

The wind is a clean, inexhaustible source of energy. No waste, CO2 emissions or other pollution produced.
Wind is also a domestic source of energy, so we don't have to rely on abroad for our energy needs
A renewable resource to meet increasing energy demands.
Once a wind turbine is built, its running costs are very low.
The land around wind turbines can be used for farming.
John Rogers, a senior energy analyst at the Union of Concerned Scientists
"It's the most cost-competitive renewable energy source right now. It's even competitive right now with fossil fuels, given how the price of oil has risen,"
http://www.livescience.com/74-windmills-change-local-global-climates.html
WHAT DOES HE THINK ABUT THE WIND FARM/ WIND POWER?
http://www.blackenterprise.com/files/2010/08/JohnRogers.
DISADVANTAGES OF USING WIND POWER
who is against my idea

Somnath Baidya Roy of Princeton University
"People treat renewable energy as if it's a free lunch. That is not true. You always have to pay a price for any consumption. We have to look at the costs and make a choice."
winds do not blow all the time, making wind power erratic
The local and global climate might also be affected by wind farms
Expensive initially to construct, especially off-shore turbines due to the
added complications of the higher-spec required to withstand more
severe elements, added costs of building off-shore, and then
maintaining them.
Some people think that wind turbines spoil the look of an area - the sites are often in remote and attractive areas.
Wind farms create a low-level noise.
Wind farms can interfere with television reception and radar.
There are environmental concerns over the interference of wind turbines with bird migrations and marine life / sea-bed disturbances in the case of off-shore farms.
https://www.rgs.org/NR/rdonlyres/83CA3532-B0FC-404C-9499-E2E5DD7A2CEB/0/42WindfarmsAdvantagesdisadvantages.pdf
WHAT DOES HE THINK ABUT THE WIND FARM/ WIND POWER?
photos:
greenstyle.it/wp-content/uploads/2013/
04/riciclo-pannelli-fotovoltaici
pulizia-fotovoltaico.it/uploads/tx_imagecycle/slide1_01
telematicaitalia.it/ellesse-impianti.it/system/GetContent.php?file=25_31_--
ggpht.com/-5tAUSsnwt88/T0AdwOYOMkI/AAAAAAAAA-Y/SgK2fkPARwI/s9000/no1
electrochem.org/wp-content/uploads/2015/06/REimage
westernpowerinnovation.co.uk/WesternPowerInnovation/media/WPDMedia/Images/Projects/PV-house
http://zonnepanelensite.be/uploads/images/zonnepanelen/levensduur_zonnepanelen
Conclusion
This research helped me to
expand my opinion
on renewable energy. While using renewable sources decrease the carbon pollution helping to improve global warming, however we need to be careful how PV, wind turbines etc... are manufactured and used. They might have environmental impacts for our future.
The real clean energy is less energy. To leave a smaller carbon footprint on our planet we should develop strategies to use far less energy overall, not subsidize more energy production.
sources:
http://www.renewableenergyworld.com/ugc/blogs/2012/12/advantages-and-disadvantages-of-solar-photovoltaic-quick-pros-and-cons-of-solar-pv.html
http://eandt.theiet.org/magazine/2013/02/debate.cfm
http://www.livescience.com/74-windmills-change-local-global-climates.html
https://www.rgs.org/NR/rdonlyres/83CA3532-B0FC-404C-9499-E2E5DD7A2CEB/0/42WindfarmsAdvantagesdisadvantages.pdf
http://www.seia.org/policy/solar-technology/photovoltaic-solar-electric
http://www.britannica.com/science/wind-power
Full transcript