Solar Energy Is Free Energy For Mankind

Every year, Earths atmosphere absorbs a total of 3,850,000 exajoules of sun heat. Solar energy is free energy people can utilize. About 174 petawatts of solar energy from the sun is received by our planet. 30% of the sun’s radiation is reflected back to space and the remaining 70% is absorbed by the clouds, land and other bodies of water.

Ever since the ancient times, the heat that comes from the sun has been very useful to people. The solar energy is a free energy for mankind. Through this natural source, we save from using fuel and other means of power source that cost too much.

The heat from sun that reaches our planet is twice as much as the amount of power that will be harnessed for a very long time from natural gas, coal and oil. Due to this advantage, modern solar technologies are presently being used to harness power. Some solar applications used nowadays are water heating, heating and cooling architectures, electricity production, cells powered satellites and for industrial purposes.

Today, many buildings are structured with the use of passive sun heating. They usually have large windows made up of materials that absorb the sun heat. It then stores the collected sun heat to the walls and the floors. These will then slowly give off heat during nighttime when its cold. Through the use of this natural source, building owners are able to save up a large amount of money.

Meanwhile, power plants that use fossil fuels before are now taking advantage of this heat as well. They use sun power systems which includes parabolic-through, power tower and dish.

Parabolic-through focus the power from the sun through slanted curved mirrors. These focuses the light to pipes that contains oil which in turn heats the water used in a generator for electricity production. The dish system and power tower system use mirrors to focus light from the sun in order to produce electricity as well.

Heat coming from the collector may also be used to cool a building. Like an air conditioner, cooling systems use sun heat as a source of power. Evaporative coolers also can make use of the sun for its power source.

Water heating has also been a famous use of sun power. Glass panels in roofs are used to heat water. Through this, gas or electricity will be saved. Pipes in the panel contain water. Water is propelled from the bottom which helps hot water to be pumped from the top.

As a free source of power, the cells are utilized by our satellites as it orbits the earth. With these satellites, we are able to use TV, telephones, internet and different navigation system. We are able to enjoy these different applications everyday with the help of solar cell powered satellites.

Solar energy is a free energy source of power. In the olden times and until now, we have used the sun to dry our clothes and even dry our food. However, only a small amount of this unlimited natural resource is used. But with mankind’s development of new technologies, we are able to fully make use of this resource. And we are all enjoying this for free.

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