Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Alternative Energies

No description
by

Alejandro Colorado

on 15 May 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Alternative Energies

Total rise in sea level over the past 100 years
17.5 cm
Amount of carbon dioxide that is released into the atmosphere every day
31 billion tons
Rise in the global average surface temperature since the late 19th century
33.08 °F
This is only the
tip of the problem
, our home is in danger and these issues are only getting worse...
So what we can do to help
?
?
?
Alternative Energy
...is the answer
Solar Energy
The Earth receives
174 petawatts (PW)
of incoming solar radiation (insolation) at the upper atmosphere.
This means...
The Earth receives more energy in
one hour
from the sun than the total energy we consume in
one year
The amount of solar energy reaching the surface of the planet is
so vast
that in one year it is about
twice
as much as will ever be obtained from all of this:
+
+
+
+
Coal
Natural Gas
Oil
Uranium
Combined
or...
Combined
How
this
can
help
OUR
PLANET?
Barrels of oil saved annually by all solar energy users
75
Million
Tonnes of carbon dioxide saved annually by all solar energy users
35
Million
When
sunlight
hits the solar cell, its energy breaks the electrons' bonds from the atoms
The electrons then are attracted to the positively charged upper plate, creating an
usable electric current
The energy from the sun is recollected and transformed by
solar panels

which work this way:
Countries with the most installed solar energy in MW
Germany
9,785 MW
Spain
3,386 MW
Japan
2,633 MW
United States of America
1,650 MW
How does
it work
?
Percent of earth that would need to be covered with solar panels to power it
0.0005%
Average solar panel size needed to power the average home
600
sq ft.
Keep fossil fuel prices low
Enhance sustainability
Reduce pollution
Lower the costs of mitigating climate change
Global Advantages
Wind power
The conversion of wind energy into a usable form has been around
for centuries
WIND ENERGY TO WIND POWER
Sails
Windmills
Wind pumps
But now a days the most important use is transform it to
electricity
How exactly
the wind
is transformed to usable
electricity
?
Turbine scheme
The wind hit the blades
making them
rotate
The rotation causes a series of gears to spin up to...
1800
RPM
With the speed generated from the gears the generator can produce a lot of electricity
An average wind turbine produces between
1 - 1.8
MV
Wind farms
types
By location
By design
Benefits
Yearly emissions eliminated by generating energy from a
1 MW wind turbine
instead of 1 MW of conventional sources:
Carbon dioxide
1500 tons
Sulfur dioxide
6.5 tons
Nitrogen oxides
3.2 tons
Mercury
60 pounds
Wind power farms generate between
17 to 39
times as much power as the consume
compared to
Nuclear plants
Coal plants
16 times
11 times
Installed cost of wind energy
2-6 cents/kWh
Wind energy produced worldwide:
6500 GW
Enough power for 6 million U.S. homes
75,000
Is the number of americans employed full-time by the wind industry
A
1MW turbine
generates enough electricity to power
homes
250
Power
Saving
Tips
Don't leave cellphones charging all night
Use
full load
in your washing machine
Changing the temperature of the thermostat by
10°F
can reduce your HVAC bills by
10%
Change your old appliances to newer ones with the
energy star
guarantee
Use
energy saving
light-bulbs
They consume less than
50%
electricity compared to older appliances
Finally...
Switch to
green energy
You won't regret it and the earth will appreciate it
!!
EXTRA TIP
Write your legislator asking for more
Green Energy
Full transcript