From Wikipedia, the free encyclopaedia
| Solar
energy is the radiant light and heat from the Sun that has been
harnessed by humans since ancient times using a range of ever-evolving
technologies. Solar radiation along with secondary solar resources such
as wind and wave power, hydroelectricity and biomass account for most of
the available renewable energy on Earth. Only a minuscule fraction of
the available solar energy is used.
Solar power technologies provide electrical generation by means of heat engines or photovoltaics. Once converted its uses are only limited by human ingenuity. A partial list of solar applications includes space heating and cooling through solar architecture, potable water via distillation and disinfection, daylighting, hot water, thermal energy for cooking, and high temperature process heat for industrial purposes. Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute sunlight. Active solar techniques include the use of photovoltaic panels, solar thermal collectors, with electrical or mechanical equipment, to convert sunlight into useful outputs. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air. |
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Passive Solar Power It is a well known fact that the sun is the strongest from the south. People who want to conserve solar power uses this theory in order to get the most sun into their houses with minimal expense. If you are building a home that you want to be solar power, it is best to put the most windows facing the south side. Although it is not always true, depending on where you live, it is a general rule to go by. Passive technology turns sunlight into heat that can be used for several things, including ventilation and cooling. You can heat homes and businesses with passive solar. Passive solar systems depend on gravity fed and natural resources in order to make passive solar work. If it uses a pump or fan to force the liquid through, than it is an active solar. Passive solar technology offers direct and indirect gain for heating spaces, water heating systems, use of thermal mass and also phase change materials which helps to regulate the temperature indoors. There is also the solar cooking equipment, the solar chimney which allows for ventilation and earth sheltering. Passive solar can also be found in a solar furnace and solar forge, although these are a little more complicated. Sun rooms are another example of passive solar power as it lets the sun come into the room without allowing it to escape. There is no mechanism or no engine to power just the clear panes of glass attracting the sun and trapping it within. Solar gain is referring to the increase in temperature in an area, an object or a structure that is a result of solar radiation. The stronger the sun the more solar gain you have. |
More Articles Kids Can Learn About Solar Power |
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A solar furnace is any huge object that is created in order to channel the heat directly to one place. The heat can be unbearable but it does produce a lot of electricity from it. Temperatures can reach up to 3,000 degrees. When you compare the expenses associated with passive solar you realize that the cost of passive solar is minimal when you compare it to active wear. Because there is no mechanism to power it makes it more affordable. With active solar you must have a device that can power the heat that you take in and used it. Passive solar is the most popular with those who are experimenting with the conception of solar power and may find that they like it enough to stick to it. When you are ready for an upgrade it is easy to move up to active power. Adding a mechanism that will easily and conveniently pump the water on through the source is an effective way of combining today's technology with conservation and preservation that we have access to. Passive solar power is something that we will be seeing a lot of in the future as the need for solar power becomes more in demand. There will come a time when even those who depend on active solar may have to switch to passive solar.
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| Wind
Power
... Horizontal axis wind turbines can either turn upward or downward. If they choose to turn the blades upward, they don't hold good together for longer periods of time. They begin to crack and breakdown in high winds. When the blades are downward facing they stay in line with the wind longer and they can ... Why You Should Choose To Use Solar Power ... has many advantages over conventional energy. The energy from the sun is free the only expense is from recovering the energy. The cost of recovering the suns energy is recovered faster than with conventional energy. The recovering units don't have to be connected to natural gas or power grids, they stand ... Heating Water Using Solar Power ... adjustments to your existing one but what ever steps you take to turn it into solar power it will be worth it. There are several different ways to heat your water using solar power. You can even make your own solar power source. The water runs through pipes before it enters your home. Heating water using ... ... are fewer problems from solar power than with other methods. Even though there are days that there are clouds in the sky and rain, snow or other weather, it is still possible to produce enough heat in your solar source to create enough energy to last until the sun can come back down. Solar power is in ... Make Your Own Solar Power Source ... parked car, in a building with no air circulating, in a home without windows opened or fans circulating the air. When you step into any of these places that have been in the sunlight for a while you soon become overpowered by the amount and the intensity of the heat. This kind of heat can be taken and ... |
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