What Are the Various Alternative Energy Sources?

Fossil fuel has been the biggest source of energy for centuries, but the world is now looking towards the alternative energy sources as fossil fuel pollutes the environment, while alternative energy is friendly to our environment. These renewable sources of energy promises to reduce the harmful by-products of fuel such as Carbon di-Oxide and Carbon Monoxide, and also helps to preserve many natural resources that we are now using as source of energy.

In order to understand the importance of alternative energy resources that how they can help in preservation of existing natural resources such as fossil fuel and how they maintain the ecological balance of the earth, it is important learn what types of alternative energy resources are available out there.

Wind Power:
Wind energy can be used by wind machines where turbine blades rotate with the flowing winds and this rotation is converted into electricity. Wind tower with turbine blades are built together in wind farms and the electricity is used to provide energy to the farms or to an isolated locations or individual homes. Older wind machines would convert the wind energy into mechanical energy which was used to do physical work such as pumping water or crushing grain.

Solar Power:
This is the most common and effective alternative energy source available out there. Solar energy is commonly used heating, cooking and producing electricity. In a solar cell, sunlight hits semiconductor material such as silicon and the electron of the outer orbital of silicon becomes free that causes the production of electricity. Another method, sunlight hits solar thermal panels and produces heat.

Geothermal Energy:
Geothermal energy comes from the heat energy present beneath the earth’s surface. In order to produce geothermal energy, some holes are drilled in a region, and the hot rocks hit the water and make it steam which rotates turbines. These turbines power electric generators.

More Info:

Metal particle generates new hope for hydrogen energy

Led by Associate Professor Greg Metha, Head of Chemistry, the researchers are exploring how the metal nanoparticles act as highly efficient catalysts in using solar radiation to split water into hydrogen and oxygen. “Efficient and direct production of hydrogen from solar radiation provides a renewable energy source that is the pinnacle of clean energy,” said Associate Professor Greg Metha. “We believe this work will contribute significantly to the global effort to convert solar energy into portable chemical energy.”

Inkjet printing could change the face of solar energy industry

Inkjet printers, a low-cost technology that in recent decades has revolutionized home and small office printing, may soon offer similar benefits for the future of solar energy. Engineers at Oregon State University have discovered a way for the first time to create successful “CIGS” solar devices with inkjet printing, in work that reduces raw material waste by 90 percent and will significantly lower the cost of producing solar energy cells with some very promising compounds.

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