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Topic: Solar power

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  Renewable Energy - Solar Energy, radiant/light energy, heat/thermal energy
The major drawbacks (problems, or issues to overcome) of solar energy are: (1) the intermittent and variable manner in which it arrives at the earth's surface and, (2) the large area required to collect it at a useful rate.
Solar thermal power plants use the sun's rays to heat a fluid, from which heat transfer systems may be used to produce steam.
Solar thermal power generation is essentially the same as conventional technologies except that in conventional technologies the energy source is from the stored energy in fossil fuels released by combustion.
www.eia.doe.gov /kids/energyfacts/sources/renewable/solar.html   (1834 words)

  Solar power satellite - Wikipedia, the free encyclopedia
A solar power satellite, or SPS, is a proposed satellite built in high Earth orbit that uses microwave power transmission to beam solar power to a very large antenna on Earth where it can be used in place of conventional power sources.
To collect and convert that much power the satellite needs between 50 and 100 square kilometers of collector area using standard ~14% efficient monocrystalline silicon solar cells, state of the art and expensive triple junction gallium arsenide solar cells with a max efficiency of 28% could reduce the collector area by half.
Solar Power Satellite from Lunar and Asteroidal Materials Provides an overview of the technological and political developments needed to construct and utilize a multi-gigawatt power satellite.
en.wikipedia.org /wiki/Solar_power_satellite   (3213 words)

 Solar power - Wikipedia, the free encyclopedia
Solar power is the technology of obtaining usable energy from the light of the Sun.
Solar cells, also referred to as photovoltaic cells, are devices or banks of devices that use the photovoltaic effect of semiconductors to generate electricity directly from sunlight.
A Solar updraft tower is a relatively low tech solar thermal power plant where air passes under a very large agricultural glass house (between 2 and 8 km in diameter), is heated by the sun and channeled upwards towards a convection tower.
en.wikipedia.org /wiki/Solar_power   (3594 words)

 The Energy Planet :: Solar Power :: English
The reason that this power reserve goes to waste is that sunlight is spread too thinly across the earth to be of any use.
The reasons that solar power plants do not power the world are summed up in two reasons: cost and reliability.
Solar plants made of solar cells are extremely expensive to build.
library.thinkquest.org /C004471/tep/en/traditional_energy/solar_power.html   (1633 words)

 Solar power - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-21)
Solar cells, also referred to as photovoltaic cells, are devices or banks of devices that use the photovoltaic effect of semiconductors to generate electricity directly from sunlight.
Solar energy converted to heat in a concentrating collector can be used to boil water into steam (as is done in nuclear and coal power plants) to drive a steam engine or steam turbine.
A solar updraft tower is a relatively low-tech solar thermal power plant where air passes under a very large agricultural glass house (between 2 and 8 km in diameter), is heated by the sun and channeled upwards towards a convection tower.
www.solarharvest.org   (4840 words)

 Photovoltaic Solar Power - ABS Alaskan Alternative Energy
Solar power is one of the first things that comes to most people's minds when the subject of alternative energy comes up.
Solar power first gained wide public awareness during the 1970's energy crisis, and while it may not be such a hot topic these days, solar technology has made great advances since then.
Solar power is also useful for small power loads* even in grid-powered areas where running grid power to the load* would be inconvenient or expensive (such as signal lights on an airstrip or parking lot lighting).
www.absak.com /basic/solar-power.html   (1683 words)

Passive solar systems are systems that do not involve the input of any other forms of energy apart from the incoming sunlight, although (in the case of solar heat through windows) there may be draperies or panels used to reduce nighttime heat losses and thermostatically or manually operated vents (but not fans) to prevent overheating.
Solar design is the use of architectural features to replace the use of grid electricity and fossil fuels with the use of solar energy and decrease the energy needed in a home or building with insulation and efficient lighting and appliances.
Solar heating systems are generally composed of solar thermal collectors, a fluid system to move the heat from the collector to its point of usage, and a reservoir to stock the heat for subsequent use.
www.solarnavigator.net /solar_power.htm   (5390 words)

 Energy Resources: Solar power
Solar One was very expensive to build, but as fossil fuels run out and become more expensive, solar power stations may become a better option.
This could generate significant amounts of power, especially in countries where there is a lot of sunshine and a lot of room, such as Australia.
Solar cells cost a great deal compared to the amount of electricity they'll produce in their lifetime.
www.darvill.clara.net /altenerg/solar.htm   (754 words)

 Sea Solar Power - The OTEC Technology   (Site not responding. Last check: 2007-10-21)
Sea Solar Power uses the basic technology known as Ocean Thermal Energy Conversion, or OTEC, which was invented in 1881 by a French scientist years ahead of his time by the name of Jacque Arsene D'Arsonval.
Therefore, the 80 degrees F solar heated surface water is ample heat source to cause the propylene to convert from a liquid to a gas or vapor.
What is special about the Sea Solar Power approach to OTEC is that it is based on low temperature refrigeration principles, and that each of the different turbo-machine elements is very efficient, designed specifically for an OTEC cycle.
www.seasolarpower.com /otec.html   (715 words)

 Solar Power 101 - FAQ | ICP Solar
Solar energy is a renewable energy source that is produced by the sun’s rays.
Solar energy is a renewable resource that is inexhaustible and readily available, unlike fossil fuels such as coal, oil and natural gas.
Solar panels and wind turbines are now used by families, companies and countries to supply power for houses, buildings and even entire cities.
www.icpsolar.com /4105/solar_power_101.asp   (987 words)

 Solar power might be a solution for you.
Solar power can be used to operate a gas clothes dryer (Maytag, etc) because the electrical requirement is limited to the drum-motor and/or ignito-lighter, but not a HEAT element for drying the clothes, for example.
Solar panels are directed at solar south in the northern hemisphere and solar north in the southern hemisphere (these are slightly different than magnetic compass north-south directions) at an angle dictated by the geographic location and latitude of where they are to be installed.
Solar panels can be wired in series or in parallel to increase voltage or amperage respectively, and they can be wired both in series and in parallel to increase both volts and amps.
www.solar4power.com /solar-power-basics.html   (2515 words)

 Solar Power
Even when the emissions related to solar cell manufacturing are counted, photovoltaic generation produces less than 15 percent of the carbon dioxide from a conventional coal-fired power plant.
Solar dealers and installers are usually the best source of how-to information for people contemplating a solar project for a home or business.
Solar electric power generated using "photovoltaics," or "PVs," is used in hundreds of applications throughout Montana.
www.montanagreenpower.com /solar   (1008 words)

 Solar Power
Solar heating is simply sunlight entering the house that is absorbed and converted into heat energy which is later released inside the house as it cools.
A passive solar home is one where the design and construction of the home itself is made to keep the house naturally warm in the winter using the sun's energy.
The basic idea of passive solar home design is to invite sunlight into the house during the winter, and once it is inside the home, to hold it in and store it until nighttime.
www.solcomhouse.com /solarpower.htm   (2271 words)

 BBC - Weather Centre - Climate Change - Solar Power
The use of solar power became very popular in the 1970s, but has fallen in and out of favour since depending on the potential savings when compared with fossil-fuel energy costs.
Houses with solar roof tiles can in fact generate more electricity than is needed at certain times in the day, and can sell this back to local electricity companies.
Projects being set up in the UK are being used as examples to illustrate the potential of solar power and its hoped these schemes will encourage businesses and members of the public to get involved with setting up similar developments.
www.bbc.co.uk /climate/adaptation/solar_power.shtml   (646 words)

 NREL: Solar Research Home Page
Solar technologies use the sun's energy to provide heat, light, hot water, electricity, and even cooling, for homes, businesses, and industry.
Concentrating Solar Power — NREL plays a leadership role in analyzing cost and performance of solar systems, developing parabolic trough technology for solar electricity generation, and developing advanced technologies such as concentrating photovoltaics.
Solar radiation research and data collection is performed at NREL's Solar Radiation Research Laboratory.
www.nrel.gov /solar   (383 words)

 Solar Power Links
The American Solar Energy Society (ASES) is a national organization dedicated to advancing the use of solar energy for the benefit of U.S. citizens and the global environment.
The University of Oregon Solar Radiation Monitoring Laboratory operates solar monitoring stations around the Northwest and is dedicated to producing high quality solar radiation data for solar energy resource evaluation and long-term climate studies.
Montana's solar easement law was enacted in 1979 and the wind easement was enacted in 1983.
www.montanagreenpower.com /solar/solarlinks.html   (840 words)

In the context of renewable energy, solar power is associated with the harnessing of the sun's present emissions of heat or light.
Solar power is renewable as long as the sun keeps burning the massive amount of hydrogen it has in its core.
With solar power, along with some batteries for backup, one is also paying for the extra reliability with their increased resistance to the simple line failures of standard utility electricity.
www.crest.org /articles/static/1/995469913_2.html   (5396 words)

 Solar power   (Site not responding. Last check: 2007-10-21)
An experimental, small scale power plant is producing electricity fueled by the heat in 'warm' water.
Nestled in an Avocado grove on the edge of the Florida Everglades, the low temperature power plant is a work-in-progress.
Low temperature thermal sources (solar, geothermal, co-generation, and OTEC) are projected to produce power for 10% of the cost of comparable photovoltaic (PV), or 50% that of concentrated solar and diesel power generation.
www.sterlingsolar.com /solar_power.htm   (181 words)

 Texas Renewable Energy Resources
Solar radiation that avoids atmospheric scattering and arrives at the earth's surface in an unbroken line from the sun is termed direct, while the scattered radiation that reaches the earth from all parts of the sky is called diffuse.
Solar equipment is frequently installed on structures that are at some angle to the ground.
Solar radiation is available throughout the state in sufficient quantity to power distributed solar systems such as solar water heaters and off-grid photovoltaic panels.
www.infinitepower.org /ressolar.htm   (963 words)

 Solar Solutions - Global Warming - Sierra Club
Solar energy can be directly converted into usable energy through a variety of processes -- solar water heating, passive solar heating and cooling, photovoltaic technology, and solar thermal technology.
Solar water heating uses a solar collector to absorb the sun's energy and then heat water in a solar tank.
Passive solar heating and cooling work within a building's design, without requiring additional mechanical equipment, to maximize natural energy flows and optimize landscaping methods to increase heat gain in the winter and decrease it in the summer.
www.sierraclub.org /globalwarming/cleanenergy/solar.asp   (254 words)

 Solar Energy Technologies Program: Concentrating Solar Power
This solar thermal power plant located in the Mojave Desert in Kramer Junction, California, is one of nine such plants built in the 1980s.
During operation, oil in the receiver tubes collects the concentrated solar energy as heat and is pumped to a power block (in background) for generating electricity.
This solar dish-engine system is an electric generator that "burns" sunlight instead of gas or coal to produce electricity.
www.eere.energy.gov /solar/csp.html   (317 words)

 Howstuffworks "How Solar Cells Work"
Although these larger panels aren't as common as solar powered calculators, they're out there, and not that hard to spot if you know where to look.
There are solar cell arrays on satellites, where they are used to power the electrical systems.
You have probably also been hearing about the "solar revolution" for the last 20 years -- the idea that one day we will all use free electricity from the sun.
science.howstuffworks.com /solar-cell.htm   (333 words)

 Solar Power
Plus, the newest panels should have an even longer life expectancy than the older models--older panels have started to turn brown in the clear substrate the solar cells are mounted in, reducing their power output.
The biggest advances in new solar panel technology recently have been in power density--the newest panels are the same size as older models, but put out more power per square foot.
The problem with trackers in a remote power application is that they give you the biggest boost of power during the summer, when you don't need it.
www.otherpower.com /otherpower_solar_new.html   (635 words)

 Solar Electric Power Association: Facilitating utility use and integration of solar electric power.
Solar Electric Power Association: Facilitating utility use and integration of solar electric power.
FEDERAL SOLAR TAX CREDITS – The solar industry is working to get Congress to pass an 8-year extension of the Federal tax credits for residential and commercial solar systems.
The tool is a unique service that connects utility employees with "solar savvy" peers that have years of experience in implementing solar programs and working on utility solar issues.
www.solarelectricpower.org   (889 words)

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