What
is solar energy? How is it generated?
The
utilization of radiant energy from the sun is called as
solar energy. To be more specific, solar energy is the
conversion of sunlight into mechanical power, electric
power or even chemical power by various solar energy
technologies like water pumps, photovoltaic cells, solar
thermal devices, and solar chimney and so on. Now how
does solar energy work is a very interesting topic to
ponder upon and definitely needs a closer observation of
all the related aspects.
How
does solar energy work: solar energy can run the
world!
The
regeneration, application and use of solar power are the
initial steps for closely understanding exactly
how does solar energy work. Also
considering solar power as the ultimate source of
renewable energy is very important. The electromagnetic
waves in the sun’s rays hit the earth’s atmosphere in
its upper levels. Nearly seventy percent of this
radiation is reflected back to the space and the
remaining seventy percent is absorbed by the landmass,
water bodies and clouds. Direct solar radiation causes
radiant heat that is captured and machinated to yield
other desirable forms of power like electricity,
mechanical power and chemical power. This solar
radiation accounts for nearly 99 percent of the useable
flux of the renewable power on earth. Now how does solar
energy work in respective fields of application depends
solely on how efficiently this source of power is
utilized by the solar energy technologies according to
the individual requirements. Interestingly, there are
innumerable types and domains of application of solar
power technology starting from architecture, urban
planning to domestic usages like cooking and even
vehicles.
The
mode and medium of application of solar energy is
determined by the respective field it is being tailored
to. However, commonly solar energy techniques can be
still classified into active and passive solar
technologies according to their functional mode. Active
solar energy technology involves the direct consumption
of solar energy in the concerned practical field like
pumps to convert sunlight into mechanical power,
photovoltaic cells to convert sunlight into heat and
even fans to convert solar energy into electrical power.
And passive solar energy technology stresses upon the
direct use of sunlight and not the regenerated forms
like citing buildings optimally to the Sun so as to get
the maximum sunlight, planning buildings with
well-illuminated and well-lit spaces etc. Thus active
solar technology opts for more and more supply of solar
energy whereas passive solar energy technology tries to
prevent the use of alternate energy resources
altogether. It is pretty understandable from all these
discussions that solar energy rightly shares much of the
space in our daily lives and the effort needed for the
application and use of this mighty resource is
undoubtedly worthwhile. Some of the innumerable fields
of application of solar energy, including active and
passive solar technologies are agriculture, urban
planning, architecture, solar lighting, electricity,
cooking, disinfection and desalination and the list
continues. In spite of all these plus points solar
energy has a few disadvantages as well that need to be
addressed closely.
Solar
energy: pros and cons
To
realize exactly how does solar energy work, we
need to review the advantages and disadvantages of this
high end technology one by one. The very fact that solar
energy is a free and unlimited source of renewable power
makes it a wonder power indeed! Addition to this is the
pollution free output that solar energy offers to
today’s environment that is badly stuck in a dire strait
with the accumulating greenhouse gases from the
conventional power plants. Also, this wonder power has
the potential of running vehicles and satellites.
However, there are certain disfavors to this amazing
power. Since a very strong and consistent sunlight is
required for the solar energy technology to work
efficiently, the solar power plants are only limited to
very few places across the world. A dispersed flow of
sunlight would neither deliver the desired output nor
would it be economically feasible as the set-up
generally takes a whole lot of money. Research on these
limitations is still on and soon will a time come when
every other house will be having a solar power converter
to welcome a greener world ahead.
Stop
asking yourself the question how does solar energy work.
Get a guide that shows you how to install a system in
your home and then you can yourself how solar energy can
be of tremendous benefit to you in saving your power
bills and cleaning up the environment too. Get a guide
that shows you step by step where to set it up, how to
wire the system, where to get cheap parts from, how to
source free batteries and also know what safety
precautions need to be followed. What you need is a
comprehensive manual that explains all this.
