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John Potter

How PV Cells Work - 1 views

teams.eas.muohio.edu/...WhatIsSolarPower.html

heat electricity cells water heating

shared by John Potter on 11 Mar 14 - No Cached
  • John Potter on 11 Mar 14
     
    The sun provides the Earth with two major forms of energy: heat and light. There are some solar powered systems that utilize heat energy while others transform the light energy into electricity. There are three ways to harness the sun's energy for use in our homes: solar cells, solar water heating, and solar furnaces
Katie Birkholz

Solar Energy | SEIA - 0 views

www.seia.org/solar-energy

energy advantages electricity solar

shared by Katie Birkholz on 12 Mar 14 - No Cached
  • Solar energy is the cleanest and most abundant renewable energy source available, and the U.S. has some of the richest solar resources in the world. Modern technology can harness this energy for a variety of uses, including generating electricity, providing light or a comfortable interior environment, and heating water for domestic, commercial, or industrial use. The U.S. solar market faces both challenges and opportunities; the industry is working to scale up the production of solar technology, and drive down manufacturing and installation costs. There are several ways to harness solar energy: photovoltaics (also called solar electric), solar heating & cooling, concentrating solar power (typically built at utility-scale), and passive solar. The first three are active solar systems, which use mechanical or electrical devices that convert the sun's heat or light to another form of usable energy. Passive solar buildings are designed and oriented to collect, store, and distribute the heat energy from sunlight to maintain the comfort of the occupants without the use of moving parts or electronics. Solar energy is a flexible energy technology: solar power plants can be built as distributed generation (located at or near the point of use) or as a central-station, utility-scale solar power plant (similar to traditional power plants). Some utility-scale solar plants can store the energy they produce for use after the sun sets. 
Nick Waters

Pro of solor enerrgy - 0 views

www.solarpoweristhefuture.com/ow-a-solar-furnace-works.shtml

solar pros

shared by Nick Waters on 12 Mar 14 - No Cached
Nick Waters liked it
  • A solar furnace is any device that creates heat by concentrating sunlight through the use of reflectors. There are many different sizes of solar furnaces that you can purchase or build yourself
  • The principle of operation consists of two mirrors pointing at a focus. The intensity of sunlight in that focus will increase approximately three times. The reason for this is because instead of only getting light from the sun, the focus gets light from the sun and two mirrors.
  • Two mirrors pointing at a focus is not going to generate enough solar energy for you to do much. Once you have 10 mirrors pointing at a focus, you will begin to get closer to levels that are capable of heating and cooking food.
  • ...1 more annotation...
  • The great thing about solar furnaces is that they are extremely versatile and have no negative effects on the environment.
  • Nick Waters on 12 Mar 14
     
    The great thing about solar energy is that it can be used for a many different things. Just within your home you can use solar power to run your lighting, heating, stove, washer and much more. You can even run a solar furnace off of solar energy. Here's how a solar furnace works...
Ethan Silaika

Pros & Cons of Solar Energy | Clean Energy Ideas - 0 views

www.clean-energy-ideas.com/...pros-and-cons-of-solar-energy

cons ideas advantages electricity energy solar cells pros heat heating

shared by Ethan Silaika on 11 Mar 14 - No Cached
  • Solar panels giv
  • The installation of solar panels in remote locations is usually much more cost effective than laying the required high voltage wires.
  • e off no pollution,
  • ...14 more annotations...
  • The use of solar energy to produce electricity allows the user to become less dependent on the worlds fossil fuel supplies.
  • Solar panels can be installed on top of many rooftops, which eliminates the problem of finding the required space for solar panel placement.
  • The installation of solar panels in remote locations is usually much more cost effective than laying the required high voltage wires.
  • The installation of solar panels in remote locations is usually much more cost effective than laying the required high voltage wires.
  • placement.
  • Solar panels can be installed on top of many rooftops, which eliminates the problem of finding the required space for solar panel placement.
  • The use of solar energy to produce electricity allows the user to become less dependent on the worlds fossil fuel supplies.
  • The major con of solar energy is the initial cost of solar cells. Currently, prices of highly efficient solar cells can be above $1000, and some households may need more than one. This makes the initial installation of solar panels very costly. Solar energy is only able to generate electricity during daylight hours. This means for around half of each day, solar panels are not producing energy for your home. The weather can affect the efficiency of solar cells. Pollution can be a con of solar energy, as pollution levels can affect a solar cells efficiency, this would be a major con for businesses or industry wishing to install solar panels in heavily polluted areas, such as cities.
  • The major con of solar energy is the initial cost of solar cells. Currently, prices of highly efficient solar cells can be above $1000, and some households may need more than one. This makes the initial installation of solar panels very costly. Solar energy is only able to generate electricity during daylight hours. This means for around half of each day, solar panels are not producing energy for your home. The weather can affect the efficiency of solar cells. Pollution can be a con of solar energy, as pollution levels can affect a solar cells efficiency, this would be a major con for businesses or industry wishing to install solar panels in heavily polluted areas, such as cities.
  • Solar panels give off no pollution
  • The production of energy from the use of fossil and some renewable fuels (e.g. wind turbines) can be noisy, yet solar energy produces electricity very quietly.
  • installation of solar panels in remote locations is usually much more cost effective than laying the required high voltage wires.
  • The use of solar energy to produce electricity allows the user to become less dependent on the worlds fossil fuel supplies.
  • once installed, they provide a free source of electricity, which will pay off over the coming years.
  • Isabel Caprood on 11 Mar 14
     
    Solar panels give off no pollution, the only pollution produced as a result of solar panels is the manufacturing of these devices in factories, transportation of the goods, and installation. The production of energy from the use of fossil and some renewable fuels (e.g. wind turbines) can be noisy, yet solar energy produces electricity very quietly. One of the great pros of solar energy is the ability to harness electricity in remote locations that are not linked to a national grid. A prime example of this is in space, where satellites are powered by high efficiency solar cells. The installation of solar panels in remote locations is usually much more cost effective than laying the required high voltage wires. Solar energy can be very efficient in a large area of the globe, and new technologies allow for a more efficient energy production on overcast/dull days. Solar panels can be installed on top of many rooftops, which eliminates the problem of finding the required space for solar panel placement. 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. The use of solar energy to produce electricity allows the user to become less dependent on the worlds fossil fuel supplies.
Max Benedetto

Solar furnace - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Solar_furnace

shared by Max Benedetto on 12 Mar 14 - Cached
  • A solar furnace is a structure that uses concentrated solar power to produce high temperatures, usually for industry. Parabolic mirrors or heliostats concentrate light (Insolation) onto a focal point. The temperature at the focal point may reach 3,500 °C (6,330 °F), and this heat can be used to generate electricity, melt steel, make hydrogen fuel or nanomaterials.
  • The solar furnace principle is being used to make inexpensive solar cookers and solar-powered barbecues, and for solar water pasteurization.[9][10][11] A prototype Scheffler reflector is being constructed in India for use in a solar crematorium. This 50 m² reflector will generate temperatures of 700 °C (1,292 °F) and displace 200–300 kg of firewood used per cremation.[12]
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