A Brief History of Renewable Energy

A Brief History of Renewable Energy 2Green Energy Geothermal Energy – 1905 The first geothermal project took place in 1905 in Italy. A farmer drilled a well, hoping for some cold, fresh water. But what he got was hot water, which turned to steam. Shortly thereafter, a new concept was born: putting a turbine on that steam to produce electricity. Old Faithful, Yellowstone Park, Wyoming Now, geothermal plants all over the world generate "baseload" power, clean energy available 24 hours a day. Modern steam turbine Solar – Photovoltaics – 1887 In 1887, Heinrich Hertz observed the photoelectric effect, where light hitting certain substances causes electrons to flow, creating electricity. In 1921, Albert Einstein won the Nobel Prize in physics for his more detailed explanation. Now, researchers are trying to bring down costs, and raise efficiencies, using the principles of quantum physics at nano-scale. Einstein Energy transfer from nano-thin quantum wells to nanocrystals above the nanolayers. Photoelectric Effect Hydrokinetics – 200 BCE Over 2000 years ago, the ancient people of India, China, and Imperial Rome built water wheels and watermills to grind grain into flour, and saw timber and stone. Msta River Rapids in Russia Hadita Dam is the largest Today's challenges are extracting the energy from rivers and ocean currents without damaging the delicate environment in which aquatic life makes its home. hydro contributor to the power system in Iraq Wind Energy – 1700 BCE The use of wind as an energy source dates back thousands of years. Remember Babylonian emperor Hammurabi – known for his "Code?" Many people believe he planned to use wind power to irrigate farm land almost 4000 years ago. But it was Greek engineer Heron of Alexandria's windwheel in the 1st century AD that is the earliest known instance of using a wind-driven wheel to power a machine. Hammurabi Windmills at the shore of Denmark Today, wind farms generate billions of Watts of clean power, and costs have fallen such that wind energy is approaching that of coal. at Bonnerup Strand Biomass – 400,000 BCE Biomass is material from living, or recently living organisms (as compared to fossil fuels, which is material from long-dead life forms). The discovery of fire, the process of converting the chemical energy in biomass to heat and light energy, is consid- ered mankind's first and perhaps most important discovery. Evidence of cooked food is found from 1.9 million years ago, though scientists doubt man learned to control the use of fire until about 400,000 years ago. Java Man - lived about 1.8 million years ago In the last century, technologies like pyrolysis and gasification have been developed that are used to extract the energy from biomass without combustion, giving us hundreds of different sources of clean energy, from waste-tires to trash to animal manure to plant clippings. Wood Pellets 2Green. Energy

A Brief History of Renewable Energy

shared by rmmojado on Jan 28
We at 2GreenEnergy are on a quest to introduce the basic concepts of renewable energy to newcomers to the field, and, to that end, we’ve begun to create a series of “infographics,” providing a f...




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