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Copy of APES Solar Energy Project
Transcript of Copy of APES Solar Energy Project
Solar POWER is solar energy that is trapped from the sun usually by panels or cells. LARGE SCALE! Solar energy projects are all over the country! Where is solar energy in use? There are large solar farms and solar power stations successfully in use, and millions of homes around the world use solar power to heat their water and provide electricity. Why solar panels? Now how do solar panels work? Maddy Thorn
Madeline Roebuck Solar Energy The History of Solar Energy French scientist Edmond Becquerel discovers the photo voltaic effect while experimenting with electrolytic cells. 1839 1908 Charles Fritts, an American inventor, described the first solar cells made from selenium wafers. 1908 William J. Bailley of the Carnegie Steel Company invents a solar collector
with copper coils and an insulated box 1883 1954 The US Department of energy launches Solar One, a 10 mega-watt demonstration project in Daggett, CA. 1982 Home Depot begins selling residential solar power systems in three of its stores in San Diego, California. In 2002 it expanded sales to include 61 stores nationwide. 2001 Solar Energy & The Present The largest solar power facility in the Northwest—the 38.7-kilowatt
White Bluffs Solar Station—goes online in Richland, Washington. 2002 present
(ctnd.) New research conducted by the UC Santa Barbara's Department of Chemistry promises to convert sunlight into energy using a process based on metals that are more robust than many of the semiconductors used in conventional methods. Light from the sun will be captured in gold nanorods and will be converted into solar energy. present Photovoltaic technology comes to the US when the first solar cell capable of converting enough of the sun’s energy into power to run everyday electrical equipment is developed. Solar powered house with 39 solar panels!! Parking lot with solar panels used to provide energy!
Built in Germany in 2011! Basic layout of a solar powered home IF YOU DIDN'T NOTICE.....WE GOT TO GO INSIDE THIS HOUSE AT TELLUS!!! Solar cells Solar towers Solar water heaters Solar cookers Other ways to use solar energy... Solar panels are only able to generate electricity during the daytime while the sun is out
Weather can also affect efficiency Another great pro of solar energy is the cost. Although the initial investment of solar cells may be high, once installed, they provide a free source of electricity, which will pay off over the coming years
We will become MUCH less dependent on the non-renewable fossil fuels that we currently use The installation of solar panels in remote locations is usually much more cost effective than laying the required high voltage wires. They can be installed virtually anywhere. There is a debate amongst scientists and economists about the costs vs. benefits of solar energy...
So what are they arguing about? CONS PROS Solar panels give off NO pollution Solar energy can be harnessed anywhere and does not need to be hooked up to a large grid. (they work in space!) International Space Station Gage Williams (director at the Renewable Energy Office for Cornwall) says..... BUT, Ozzie Zehner (scholar at UC Berkeley; author of ‘Green Illusions') says..... "Solar energy already makes economic sense and its applications can be increased immediately....home brewed energy could become the norm with the grid providing back up and power for heavier appliances" "Solar energy may appear to have the potential to be economical but there are hidden costs...Any number of conservation strategies offer far higher dividends than solar cell investments" This graph from 2010 shows that solar energy construction is rather expensive.... ...HOWEVER, solar costs are dropping rapidly ...so there is definitely hope to further develop technology and use the infinite energy from the sun to power our world! TWO TYPES ACTIVE HEATING PASSIVE HEATING Energy from the sun’s radiation, collected and transferred, then distributed or stored for use as needed. This requires technology and panels and collectors. Passive solar design refers to the use of the sun’s energy for the heating and cooling of living spaces. It happens naturally and no technology is needed.