solar thermal panel
Renewable energy is really the generation of power in useful forms from natural sources such as the sun (solar energy), wind (air currents), water (hydro, waves, currents etc.), biological (biomass) and the earth itself (geothermal). This is an inexhaustible supply and technologies are evolving to make use of these processes for conversion to usable energy.
One advantage unique to renewable energy but not fully appreciated is the phonemon of community renewable power project. Community renewables projects can be a great force for social cohesion, and they can create a wide range of social benefits that transcend the economics of a particular project. These advantages include decreased dependence on foreign natural gas and oil, a power infrastructure that is far less subject to large-scale disruption or terrorism because of its distributed and diverse nature, local control of generation facilities, creation of much needed high-quality jobs in rural areas, and a supplemental revenue stream for agricultural community members that allows them to maintain their rural lifestyle. These projects include projects as diverse as willow coppicing and gasifying the wood chip produced, using power plants built mostly on farms, to community anaerobic digesters processing the food and organic waste of a community feeding electric power into the local power grid and hot water via CHP schemes into their homes for low cost heating.
Wind power is an example of a power type which can take jobs and revenue to remote communities which have otherwise been declining. A large wind farm can create dozens of secure long term jobs.
The relative price of renewable fuels is now much lower, so the incentives are there to invest. Wind power is a typical example where investors are receiving good yields and are likely to do so for many years to come. The term alternative is used to contrast with fossil fuels according to some sources. Wind turbines can be situated on land or off-shore providing many more sites.
Wind energy is the fastest growing energy resource in the world and can economically produce scalable renewable power to meet growing energy demands. In the US, wind power could produce up to 25% of our nation’s energy needs and we think this is a good thing.
Biomass energy comes from plants and trees. Wood is the largest source of biomass energy. However this form of energy can be implemented badly, and if it is it can be inefficient and destructive. One example is if biomass is burnt but the forests are not replanted.
To power a large proportion of the United States by biomass, vast areas would need to be taken from food production and harvested annually to feed our energy cravings while food prices would still rise higher and higher.
Biodiesel use is small now, but its use in diesel engines and for heating is increasing. Biodiesel and bioethanol do produce carbon dioxide when they are combusted in a car engine. However, crops used to make it do re-absorb that carbon dioxide as they grow. This biofuel is competitive with regular diesel fuel within a local market. A market worldwide for this product of methane is developing very quickly. Europe is now the largest biodiesel market in the world.
Biodiesel and ethanol, for example, is being combined with gasoline for cleaner transportation fuel.
While we are on the subject of combining technologies to give useful results. Sunlight is being collected and is being combined with standard electric lighting to produce hybrid solar lighting, a new development in solar technology.
Geothermal Energy can be used much more than it has been to date. Geologically derived energy of this sort is produced by heat from sources below the Earth’s surface. For electricity generation, steam created by these underground heat sources is used to spin turbines. Geothermal energy uses hot water deep within the earth’s crust to spin turbines and produce power 24 hours a day, seven days a week. It produces few carbon emissions and can re-inject used-water back into the earth to be used again, making it fully sustainable.
Solar power is generated when utilities are in highest demand – in the middle of the day. In terms of the energy to make these solar cells, it is said that in about the same time it takes to pay them off – four to five years – the cells provide back the energy that was required to make them in the first place.
One place in which solar energy is being heavily used is Hong Kong. Solar energy is abundant in Hong Kong’s sunny climate, and easy to use. However, you can consider replacing your existing water heater with a new solar hot water heating system located on the rooftop of your building, even if not in a hot country. The reduction in available solar energy between equator and poles is not a great as most people seem to think. Solar thermal power stations operate in the USA and Spain, and the largest of these is the 354 MW SEGS power plant in the Mojave Desert, but solar is still worthwhile in more temperate climates.
Finally, there is the potential for much more thermal electric energy to be captured, where the sun light is reflected and focused using a huge parabolic mirror. This reflected light energy can then be used to heat water to create steam which can be used to drive a turbine to produce electricity just like in a conventional power plant.
Steve Evans is a renewables writer and expert. Visit his other web sites. See the biogas digesters web site to find out much more about this fascinating and rapidly developing subject.
In his spare time Steve also writes for the dog breeds articles web site.
Soda pop beer can Solar heater furnace cansolair panel – Part 3
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Cobra CPI 2575 2500 Watt 12 Volt DC to 120 Volt AC Power Inverter
$299.95 2500 watts continuous/5000 watts surge. LED function/status surge. USB output. Dc To Ac Inverters: Car Audio & Video: Power Inverters...... |
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Floating Solar Spa and Hot Tub Cover 6 ft. x 6 ft.
$20.99 SIGNIFICANTLY LOWER YOUR HEATING COSTS! Use whenever your spa is not in use to cut down on water and chemical evaporation. Full 15-mil. Thickness. Trimmable to fit any shape spa! NOTE: All Solar Spa Tops are shipped in square form.... |
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Poolmaster 59010 Above Ground Pool Solar Heating Panels
$96.56 The cold water circulates through your existing pool pump filter and into the panels while the circulating water is heated by the sun. As the water is pumped through the solar heating panels, the warmed water returns to the pool through the return hose.... |
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Energy Film Glare Control Window Film 48-by-84-Inch
$31.02 Energy Film Shade is a thin, tinted window film that provides immediate year-round energy savings by retaining interior heat in the winter and blocking solar heat in the summer. Energy Film Shade is an inexpensive and easy way to make the home or office more energy efficient while providing UV protection. It is easy to apply and uses no adhesives.Summer/Winter insulating filmSaves up to 12-18% of ... |
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Solar Attic Fan - Thermostat ( for Natural Light Brand Fans Only)
$22.50 This is the Natural Light brand optional Solar Attic Fan in-line thermostat. It is easily installed on the wires under the fan. The thermal snap switch is a small device which attaches to the attic fan motor designed to turn on the Natural Light Solar Attic Fan when the temperature in the attic reaches approximately 80°F. The thermal switch will turn off the motor when the temperature in the att... |
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Brady PTL-14-423 TLS 2200 and TLS PC Link 1 Width x 0.187 Height, B-423 Permanent Polyester, Gloss Finish White Thermal Transfer Portable BradyBondz Printer Label (750 per Roll)
$49.82 Brady B-423 is UL Recognized for Outdoor Use on glass, thermoset polyester plastic and polyvinyl fluoride plastic surfaces to support solar panel identification applications. Print Technology: Thermal transfer. Materials Type: White polyester. Finish: Glossy white. Adhesive: Permanent acrylic. RECOMMENDED RIBBONS: Brady series R6000, Brady series R6000HF (low halogen), Brady series R4400 (colors -... |
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Brady M71-17-423 BradyBondz 1 Width x 0.5 Height White Color B-423 Permanent Polyester Labels With Gloss Finish For BMP71 Thermal Transfer Portable Printer (500 Per Roll)
$42.41 BradyBondz Labels for the BMP71 Label Printer. Please Note: This material is UL, CSA & AGA approved with its respective ribbon. See the "Recommended Ribbon Series" for the appropriate ribbon to use.... |
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Solar Electric House Kit - Solar Electric House Kit
$29.95 Build an environmentally friendly miniature house with working appliances. This kit, ideal for any classroom or science fair project, provides the main components to power a solar ceiling fan and light bulb. You construct the house from the included blueprint using the kit's solar panels and materials you provide. When completed, the house is a working demonstration of solar thermal, solar energy,... |
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Perigee Solar Power Generator: Expeditionary Kit 201-1a
$539.99 Our original "201" 12V DC -115V AC generator kit is insulated, shock resistant, & scalable. Ships with one high efficiency 10 watt 12 Volt foldable solar panel designed for durability, fast recharge rate, and Ultra Violet\Weather resistance for multi-environment operation. Dual AC outlet 200W\400W inverter powers medium draw devices such as laptops, lamps, fans, battery chargers, etc. Over\Under V... |
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BP Solar BPSX380J Bolt In Replacement Solar Panel 80W - 36 High Efficiency Polycrystalline Cells. (PURCHASE MINIMUM QTY: 2 x 80W PANELS AND GET A FREE 10A / 12V PWM VOLTAGE REGULATOR)
$368.00 SOLAR-X (SX80) high efficiency module is specifically designed to replace BP Solar's popular BPSX380J modules. This is a hole for hole "BOLT IN REPLACEMENT". The SOLAR-X SX80 module uses state of the art multicrystalline technology with a Silicon Nitride (SiN) coating that enhances cell efficiency. Encapsulation beneath high transmission tempered glass is accomplished using an advanced, UV resista... |
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Solid Grommet Top Thermal Insulated 108-inch Blackout Curtains
$87.99 These solid grommet top thermal curtains blackout the light to protect your furniture from harsh sun rays. The curtain panels are featured in a variety of warm colors to update your decor. |
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150 Best Eco House Ideas (Hardcover)
$19.59 This sourcebook features the latest innovations in sustainable home design by internationally renowned architects and designers, including solar paneling, wind energy systems, environmentally-friendly heating and cooling solutions, thermal glazing and ... |
