In a world where there
is desperate search of alternate source of energy to avoid energy crisis in the
near future,solar energy has proved to be one of the most effective form of
alternate source of energy.Solar energy which is termed as perpetual source of
energy is an infinite source of energy and if can be easily manipulated,it can
be the main energy source and power earth for many years without any crisis and
without degrading nature.Solar water heater is also one of the widely used
application of solar energy which uses radiation from the sun to heat water.
Hot water which doesn’t
seems like a big issue actually can be considered as one of the important need
of people.People use hot water to drink,take a shower,may be wash dishes or
clean clothes or other purposes.It is believed that an average American citizen
uses 20 gallons of hot water per day which is nearly equal to 120 liters.The
energy required to heat such amount of water can be imagined by thinking of
time it takes to boil small amount of water to cook one noodle.So lot of energy
and also money is being spent in heating water.So solar water heater is one of
the important alternate energy source for heating water which saves money and
never the less environment.
Due to its many
advantages over other water heating sources like fossil fuel,petroleum products
or burning wood, its use is increasing throughout the world.But to make it the
prime energy source,its efficiency and performance should be increased.So our
goal in this research is to increase the working efficiency of solar water
heater,provide better insulation for heated water in reservoir tank and provide
user with heated water at constant temperatue even though the temperature in
the surrounding varies.We purpose to accomplish this goal by adding extra layer
of insulation outside reservoir and filling this layer with wax which also
stores the extra heat energy from heated water during hot parts of the day and
supplies this energy to water which is less heated during cold parts of the
day.
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