Engineering

In today's climate of growing energy needs and increasing environmental concern, alternatives to the use of non-renewable and polluting fossil fuels have to be investigated. One such alternative is solar energy.


Solar is one of the most talked-about alternative energy sources in the world today.

  •  Enough energy comes from the sun in one hour to power the global population for a
  •  Sunlight is a totally renewable resource, unlike oil, coal and natural gas.


This energy is in the form of solar radiation, which makes the production of solar electricity possible.


The solar power where sun hits atmosphere is 1017 watts, whereas the solar power on earth’s surface is 1016 watts. The total world-wide power demand of all needs of civilization is 1013 watts. Therefore, the sun gives us 1000 times more power then we need. If we can use 5% of this energy, it will be 50 times what the world will require. The energy radiated by the sun on a bright sunny day is approximately 1kW/m2 .


The applications of solar energy which are enjoying most success to-day are:

 

1. Heating and cooling of residential building.heating and colling

Homemade Solar Water Heater

2. Solar water heating.
solar panels for agriculture3. Solar drying of agricultural and animal products.
44. Solar distillation on a small community scale.
5. Salt production on a evaporation of sea water or inland brines.
solar cookers6. Solar cookers.
solar pump7. Solar engines for water pumping.

food8. Food refrigeration.

Solar Energy

9. Bio conversion and wind energy, which are indirect source of solar energy.
1010. Solar furnaces.

solar pond

11. Solar electric power generation by

A) Solar ponds.
b) Steam generators heated by rotating reflectors (heliostat mirrors), or by tower
concept.
c) Reflectors with lenses and pipes for fluid circulation (cylindrical parabolic reflectors).

integrations atypiques photovoltaique

12. Solar photovoltaic cells, which can be used conversion of solar energy directly into electricity or for water pumping in rural agricultural purposes.