Solar energy
Solar energy created
due to thermonuclear fusion reactions that occur in the sun. It must be noted
that earth receives energy more than 1000 times of consumption of energy. If
140 x 140 mile parcel land in Arizona is covered via solar cells then it will have
ability to full fill the electricity demand of United States.
In United States, solar energy utilization is only
one percentage of total consumed renewable energy.
Sun light indicates the complete electromagnetic
-radiation or we may say visible light, ultraviolet, infrared, radio waves and
x-rays.
The surface of earth, actual, receives approximates
47% of the complete solar energy that are reaching the Earth. Hence we
consider this percentage of solar energy as useful energy. Following figure
shows.
A. Electromagnetic –radiation
B. Solar energy reaching earth surface
C. Compounds of solar radiation are as mentioned in
figure
Advantage and disadvantage of solar energy
Advantages
All radioactive polluting by-products generated due
to thermo-nuclear reactions and various chemicals will not reach over the
surface of earth, but also only pure radiant -energy reaches over the surface
of Earth.
Solar energy that reaches the earth will be
incredible. It was concluded that approximate sunshine of 30 days
reaching the Earth will have the energy equivalent to the complete planet’s
fossil fuels (used and unused).
Available freely in nature without threat of being
run out
Environmental friendly
Could be converted in to useful energy with little
effort and little cost of operation and maintenance
Disadvantages
Earth surface will not receive sun shine on
continuous basis because Sun will not shine continuously.
Solar energy is a source of energy of diffuse source
type. Hence in order to harness the sun energy, we have to concentrate it into
a quantity and then we can utilize the energy of sun in terms of electricity
and heat.
Not reliable as compare to conventional sources
because sun energy can only be possible to secure during day time and with
condition that weather is good for sun shine.
Case study
Let us discuss some
case study
University of Delaware
Challenge
University of Delaware
was intended to make a significant solar PV system for generating electricity,
but they were restricted by the costing structure of such a big installation.
It was concluded to select standard Solar as they
were offering a turnkey solution that includes design, finance, construction,
maintenance & operations at a price that should be lower as compared to the
current costing of electricity- rate for University of Delaware.
University of Delaware will have responsibilities
for Standard Solar unit designing, installation, operation and maintenance.
A crucial challenge for this solar system project was the selection of suitable sites for installation. Field House of University of Delaware was selected for this project because field house has barrel-shaped roof and this roof was good for solar system installation.
But later some technical problems were observed
during deep study about technical feasibility of the selected sites and some
engineering work carried out with considering safety points and other factors.
Solution
In respect of the above
mentioned challenges, Standard Solar was confident to make the vision or aim of
the 2009- Class in reality by proper planning and providing the finance,
suitable design, and proper execution of the process of installation.
Standard solar full fill the dream of class 2009 by
providing sustainable energy at a rate which was competitive for a lot of
years.
Result
UD’s system was
expected to produce around 1,035 MWh (megawatt hours) of electricity every year
and it was observed great reduction in emission of carbon dioxide on annual
basis.
The reduction of emissions of carbon dioxide will be equivalent of
reducing the utilization of 93,363 gallons of gasoline per year.
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