Heating With the Sun's Energy Solar thermal (heat) energy is often used for heating water used in homes and swimming pools and for heating the insides of buildings ("space heating"). Solar space heating systems can be classified as passive or active. Passive space heating is what happens to your car on a hot summer day. The sun's rays heat up the inside of your car. In buildings, the air is circulated past a solar heat surface and through the building by convection (meaning that less dense warm air tends to rise while denser cool air moves downward). No mechanical equipment is needed for passive solar heating. Active heating systems require a collector to absorb and collect solar radiation. Fans or pumps are used to circulate the heated air or heat absorbing fluid. Active systems often include some type of energy storage system.

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Solar energy has been used by humans and every other living being since its inception. Solar energy is the heat and light from the Sun. The Earth receives 174 petawatts (PW) of solar radiation at the upper atmosphere and of that 70% is absorbed by clouds, oceans and land masses. Energy from the Sun is harnessed in two ways; Heat and Light energy.

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The solar oven which is also called as the solar cooker, is an instrument, that works with the help of sunlight. The biggest benefit of solar oven is that it does not consume any kind of fuel nor does it consume electricity and therefore is a cost-effective appliance. Solar oven proves competitive with regards to the ability to cook almost everything that a conventional oven can. Solar oven or the solar cooker is found in many different types which include the parabolic cookers, the solar kettles, the box cookers and the hybrid cookers. Now, on knowing the importance and the benefits of the solar oven, you must be eager to know how to make a solar oven. So let us have a look at the procedure.

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Solar energy is a combination of heat and potential energy, that comes to the surface of the earth in the form of sun rays. When the sun rays or rather the radiation of the sun reaches the surface of the earth, in transforms itself into heat and light energy. The heat and light energy, can be utilized by different techniques, to produce usable forms of energy. Many scientists have elaborated and emphasized the advantages of solar energy as a source of energy and a raw material for usable energy production.

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