Solar Panels

Solar panel is a device which collect heat from sun rays. This heat is called solar thermal energy.

Solar pump in Bangladesh

Solar pump is one of the important inventions for irrigation system.
The power generated by solar energy is use for water pump,
which is useful for irrigation purpose. Using local technology
the renewable energy resource center of Dhaka University
invented solar pump. This solar pump can be used for
irrigation purpose.6th September 2009 a news briefing
about this invention was given by the resource center.
Bangladesh is an agricultural country here irrigation
is most important for cultivation. But only 35 % cultivable
land under irrigation, 65% is not perfectly irrigate.
The invention of this solar pump will perform important
role for irrigation system. To make this solar pump local
inverter was used. So price is less than the general pump.
If the farmer buys this pump they will able to use at
least 25-30 years. Now time comes for Bangladeshi
engineers to concentrate their mind how can make our
country free from load sheading. For this purpose solar
energy can play important role.

Solar energy

Solar energy is one kind of energy in which solar radiation is used for production of energy. Among the various non-conventional source of energy solar energy seems to hold out the greatest promise the mankind. The solar energy is free, inexhaustible, nonpolluting and friendly for environment. The rapid depletion of fossil fuels and combined crisis of pollution and of steep rise in oil price have brought about an upsurge of interest in Solar energy. The existing source of energy such as coal, oil, water and uranium may not be sufficient to meet the increasing energy demands. This requires that scientists and engineers should undertake resources work which would help in exploring the possibilities of harnessing energy from several nonconventional source of energy.

Application field of solar energy

Solar energy can applied all purpose according to our need.
But energy production rate is small so most applicable field are
to operate irrigation pump, navigational signals, high way lighting,
rail road crossing signal and so many little consumption devices.
It also use to power supply for microwave repeater station , radio
and television receiver,solar water heater, solar refrigeration etc.

Flate plate collector

Flate plate collector is made in rectangular panel are relatively simple to construct and erect. Flate plate collect and absorb both direct and scattered solar radiation, that effective even cloudy days where there is no direct radiation.At first solar ray pass into transparent cover and fall on absorbing surface. this absorbing surface is usually made of copper aluminium. By flat plate collector it is not possible to generate steam , so this system can not be used directly to run steam generating unit.
insulation is used to prevent loss of heat from the absorber and heat transforming fluid. This insulating materials commonly used are fibreglass or styrofoam