Renewable energy
comes from sources seductive:wind, which also produces waves, water, which
includes hydroelectric, tidal and geothermal energy (water heated by hot
rocks); sun, which includes photovoltaic energy generation and solar thermal which focus
sunlight to heat a fluid that drives a turbine to generate electricity. The
plan(By Mark Z. Jacobson (Stanford University) and Mark a. Delucchi (Univ.
California-Davis).) includes only technologies currently in operation or are
close today's large-scale production, rather than those that may need 20 or 30
years of preparation from today.
To ensure that the
energy system would remain clean, must
be considered only alternative power generation technologies that have near zero emissions of greenhouse
gases and air pollutants during their entire life cycle, including
construction, operation and decommissioning. For example, when burned in
vehicles, including most of ethanol ecological sources of air pollution created
which causes the same level of mortality when burned gasoline.
Nuclear power
produces up to 25 times more carbon dioxide emissions than wind energy, when
considering the construction and enrichment of uranium and transport. Carbon
capture and sequestration technology can reduce carbon dioxide emissions from
power plants, but will increase the emission of air pollutants and will extend
to all the other harmful effects of mining, transport and processing of coal,
because they have to use
more coal to meet energy demand of the capture and storage stages.
Also consider only alternate power technologies that do not present risk waste disposal or to be used for terrorism.
Nuclear power
produces up to 25 times more carbon dioxide emissions than wind energy, when
considering the construction and enrichment of uranium and transport. Carbon
capture and sequestration technology can reduce carbon dioxide emissions from
power plants, but will increase the emission of air pollutants and will extend
to all the other harmful effects of mining, transport and processing of coal,
because they have to usemore coal to meet energy demand of the capture and storage stages.
Also consider only alternate power technologies that do not present risk waste disposal or to be used for terrorism.
As a good example the
geothermal energy:
Advantages of
geothermal energy:
1. A friendly energy
environment. It is a renewable energy since takes advantage of the heat stored
in the earth by solar radiation, is inexhaustible. The emission of CO2 is
lower, since without performing any combustion process.
2. Minimizes energy
dependence.
3. A perfect energy
for residential use. The geothermal pump can be installed inside the house
without requiring any ventilation. This makes more lasting in time to not
suffer the same wear that a machine
installed outdoors.
4. Reduces the cost.
It is a system of both economic and energy savings.
Countries that are
looking for better development with this geothermal energy system have a long way in the
development of this great renewable energy source. Currently it is estimated
that for conditioning and production hot water, there are very few thermal
megawatts installed in each country. That is nothing, or almost nothing,
compared to alternative fuels. Especially for the great ignorance that exists
about geothermal energy and they don't know that this source can cover 75% of
energy needs that will require housing in lifetime. The investment is amortized
to pay for five or ten years , thereby preventing further rise over the light
for the fifth consecutive year.
Certainly geothermal energy is an investment, but it must be amortized within 10 years. We will not hide a reality. Using geothermal generation is more expensive that build a boiler. Perforations are priced by the difficulties of drilling, insert a test, etc, filled with special mortar. It's like if gas fee should be charged to the cost of the pipeline to house. But the reality is that these holes will provide in a perfectly designed system, 75 percent of the energy demand housing in lifetime, and the price will be fixed because it pays the initial day.
Certainly geothermal energy is an investment, but it must be amortized within 10 years. We will not hide a reality. Using geothermal generation is more expensive that build a boiler. Perforations are priced by the difficulties of drilling, insert a test, etc, filled with special mortar. It's like if gas fee should be charged to the cost of the pipeline to house. But the reality is that these holes will provide in a perfectly designed system, 75 percent of the energy demand housing in lifetime, and the price will be fixed because it pays the initial day.
In the plan,
WWS(Wind,Water,Sun) would supply electricity for heating and transport
(industries that would be renewed if the world has any hope of slowing climate
change). They assumed that more fossil fuels (as well as heating and stoves)
can be replaced by renewable energy systems and more vehicles with fossil fuels can be replaced by battery
electric vehicles and fuel cells. The hydrogen produced
by electrolysis with electricity's WWS, is the food that supply the fuel cells to produce
electricity in industry and would be used in aircraft engines.
In the next article
we will be continue with this subjects and talking about the Obstacles and Solutions for Renewable Energy Materials
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