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Topic: Solar chimney

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	Solar power - Wikipedia, the free encyclopedia
		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.
		A solar chimney is a relatively low tech solar thermal power plant where air passes under a very large agricultural glass house (between 2 and 30 km in diameter), is heated by the sun and channeled upwards towards a convection tower.
	en.wikipedia.org /wiki/Solar_power (6196 words)

	Solar chimney - Wikipedia, the free encyclopedia
		A solar chimney is an apparatus for harnessing solar energy by convection of heated air.
		The proposed solar chimney was originally to be 1 km high, and the base 3.5 km in diameter (for a total of about 10 km²).
		Solar chimneys will have a superior level of greenhouse abatement by producing only clean green sustainable electricity, no coal or gas fired electricity generator is able to compete with the clean emission free credentials of a solar chimney.
	en.wikipedia.org /wiki/Solar_chimney (1015 words)

	Vision Engineer - Solar Flue (Site not responding. Last check: 2007-10-13)
		A solar flue is an air stream driven by temperature difference in a solar chimney power station.
		The chimney was 10 meters in diameter and 195 meters tall.
		Solar chimney power stations are particularly suitable for generating electricity in deserts and sun-rich wasteland.
	www.visionengineer.com /env/solar_flue.shtml (524 words)

	Solar Tower - Wikipedia, the free encyclopedia
		The Solar Tower could be built almost entirely from recycled materials and be scaled to as much as 1 km in height and generate upwards of 200 MW.
		Given that a solar chimney is "mostly concrete with a few moving parts" and does not have a lot of mechanical complexity, it is also considered to be economically attractive.
		An alternative of the solar chimney are the Energy towers proposed by Dan Zaslavsky.
	en.wikipedia.org /wiki/Solar_Tower (958 words)

	Solar chimney plus bell jar - a thought experiment
		It involves a chimney of height 1000 metres and diameter 120 metres and a solar collector of diameter 7000 metres (Figure 1).
		The solar chimney is driven simply by natural convection and, for a 1000 metre height chimney, has an efficiency of about 3%.
		Some is lost through the glass and the walls of the chimney; but the large majority emerges from the top of the chimney as a stream of warm air up to 20 K above ambient temperature and with a velocity of up to 12 metres per second.
	www.globalwarmingsolutions.co.uk /solar_chimney_plus_bell_jar.htm (807 words)

	SolarMission Technologies, Inc. :: The Solar Tower Project is designed to provide large scale renewable energy with ...
		The solar radiation is responsible for causing a constant up-draught in the tower.
		It is encouraging to know based on the solar chimney power plant’s ability to generate electricity; even a small number of solar towers could be introduced to replace a large nuclear power station, currently the dominant alternate power source.
		Solar Towers can not convert the entire proportion of solar heat collected into electricity, but manages to compensate for this disadvantage by their cheap, robust construction and low maintenance costs.
	www.solarmissiontechnologies.com /project-technology.htm (741 words)

	The Solar Chimney
		The majority of solar input is lost in the simple expansion of air before it reaches the turbine.
		The author proposes a modified solar chimney where the paramount consideration is the rigorous elimination of all energy losses.
		The chimney is open to the air and at atmospheric pressure.
	www.globalwarmingsolutions.co.uk /the_solar_chimney.htm (651 words)

	Solar chimney - (Site not responding. Last check: 2007-10-13)
		Another benefit of the solar chimney concept is its ability to generate solar power during cloudy periods and at night.
		The solar concept does not require sunshine as it operates on temperature differentiation due to solar radiation combined with heat storage advancements, identified during the Australian project feasibility study, 24/7 base load operation is anticipated.
		The solar chimney is currently progressing through robust development tests to measure the merit of Australian developed enhancements, that if successful, will increase the flexibility of the power station design to meet localised energy market demands; including scalability and base, shoulder and peak load electricity generation.
	psychcentral.com /psypsych/Solar_chimney (1034 words)

	Solar chimney: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-13)
		Solar power describes a number of methods of harnessing energy from the light of the sun....
		A solar tower is a structure used to support equipment for studying the sun....
		Another benefit of the solar tower concept is its ability to generate surrogate solar power during cloudy periods and at night.
	www.absoluteastronomy.com /encyclopedia/s/so/solar_chimney.htm (2337 words)

	Schlaich Bergermann und Partner - Solar Chimney - Technology (Site not responding. Last check: 2007-10-13)
		Solar chimneys are large-scale power plants with an output of 5 to 200 MW each.
		For the chimney we thoroughly compared various types of construction and materials and discovered that for all desert -countries in question reinforced concrete tubes promise the longest life-span at least costs.
		Either a large number of small turbines with horizontal axes may be arranged around the base of the chimney, or to be more cost-efficient, one large, say a 100 MW turbine with a vertical axis is placed in the chimney’s cross-section.
	www.sbp.de /de/html/projects/solar/aufwind/pages_auf/techno.htm (290 words)

	Halfbakery: Mountainside Solar Chimneys
		Solar chimneys are an excellent idea; they combine the best parts of solar and wind power to create reliable, environmentally friendly, cheap electrical power 24 hours a day.
		Since the technology requires a great deal of stored solar energy (in the Wired article, the greenhouse is 6 square miles), and the ideal chimney would be vertical (which would put the 'greenhouse' in the middle of the mountain), put a solar concentrator at the top to focus sunlight on a heatsink at the bottom.
		The chimney doesn't need to be vertical: all that matters is the pressure difference, which only depends on the difference in altitude between top and bottom, not the verticallity itself.
	www.halfbakery.com /lr/idea/Mountainside_20Solar_20Chimneys (571 words)

	Vision Engineer - Solar Chimney Power Station - The Future is Near (Site not responding. Last check: 2007-10-13)
		Then the solar chimney can operate around the clock, instead of depending on environmental factors, such as the wind needed for wind farms.
		By building the solar chimney power plant, the Australian government target of producing 2% of energy from renewable sources by 2010 (9500 GigaWatt hours) could be met easily.
		The chimney is basically a very simple tube with wall thickness of 25cm, diameter of 150m and a height of 1000m.
	www.visionengineer.com /env/solar_flue2.shtml (435 words)

	Bulletin - Tower of power (Site not responding. Last check: 2007-10-13)
		It is an ambitious plan by anyone’s standards: to build the world’s tallest structure to siphon solar energy from the flat, arid landscape of Neds Corner, near the Murray River in north-western Victoria.
		A 1km solar tower would be far more conspicuous but the corresponding “footprint” of 40-odd towers would be less than 800 sq km; about 28km on a side.
		Solar towers would help Victoria, which is heavily dependent on brown coal-sourced electricity, out of its bind in the Latrobe Valley.
	bulletin.ninemsn.com.au /bulletin/eddesk.nsf/0/A7BD712D34AE25B3CA256B12001BA833?open (1567 words)

	Solar Chimney could be the holy grail of energy production
		Drawings of the "solar chimney" that Senanayake and his associate, Viren de Mel, have been touting around Asia go back more than a decade.
		Power from the solar chimney involves a huge upfront cost and its economic viability remains questionable.
		"Because of the limited experience with solar chimneys and the size of this project, there are going to be a number of problems," predicts U.S.-based energy expert Edgar DeMeo, manager of the renewables program at the Electric Power Research Institute, a clearinghouse for alternative-energy technology, located near San Francisco.
	www.gluckman.com /SolarChimney.html (1217 words)

	the Otherpower.com Discussion Board \|\| short solar chimney for pumping
		It would be nice to be able to pump water with the solar chimney as part of a solar heating system (not producing electricity).
		I looked at the pressure drop available from the top of the chimney to the bottom and if I understand the math correctly (bouyancy?) then I would need the bottom to be over a funnel of water to get anything other than the difference in the density of the air as a manometer reading.
		the 'solar' side of it is that the box would have foil "wings"(dish/trough/etc.) to increase the collection area that impinges on two of the four sides-the other two being insulated.
	www.fieldlines.com /story/2005/1/28/212049/363 (2083 words)

	Solar Tower \| MetaFilter (Site not responding. Last check: 2007-10-13)
		It's different from solar cells because electricity is produced by rotating the turbine (and therefore a magnet) inside a coil of wire.
		And finally, the solar chimney has the rather neat side-effect of creating a large area of potentially farmable land underneath it, rather than a giant patch of shade.
		The chimney is tall because it operates by exploiting the temperature differential between the base of the tower and the top.
	www.metafilter.com /mefi/22685 (4067 words)

	Wired News: Solar Tower of Power Finds Home
		Announced several years ago, the 3,280-foot Solar Tower is one of the most ambitious alternative energy projects on the planet: a renewable energy plant that pumps out the same power as a small reactor but is totally safe.
		Originally slated to be operational this year, construction of the massive project won't begin until 2006 at the earliest, said Roger Davey, chairman of EnviroMission Limited, the Melbourne, Australia, company behind the venture.
		"Solar chimneys (towers) have become a hot area of research recently," said S.A. Sherif, a professor of mechanical and aerospace engineering at the University of Florida, who wrote several papers on the technology in the early 1990s and is the technical editor of the
	www.wired.com /news/technology/0,1282,66694,00.html (656 words)

	Viridian Note
		The solar chimney concept's from a German academic in Stuttgart.
		Then the 'solar chimney' could operate around the clock, instead of depending on environmental factors, such as the wind needed for wind farms.
		A 200- megawatt capacity 'solar chimney' is going to require a circular greenhouse almost 2.5 miles in diameter, enclosing a total area of more than six square miles.
	viridiandesign.org /notes/251-300/00273_a_beautiful_toy_and_a_nice.html (1351 words)

	MiSo* \| How MiSo* Works
		The air within the solar chimney is continuously moving and through automatic louvers and vents, is directed to either heat or cool the interior spaces.
		The ceramic coating is as thin as a coat of paint and is applied to the interior of the chimney cavity.
		The solar thermal system is integrated into the roof structure on the east side of the house along with the other solar panels.
	www.misohouse.org /howmisoworks.php?howworks=systems (1341 words)

	ALTERNATIVE ENERGY BLOG - Solar-Energy-Wind-Power.com: Solar Chimney for California?
		One of the Alternative Energy Blog's most popular posts was on a proposed solar chimney in Australia (also known as a Solar Tower).
		It works using the solar chimney to cover a large greenhouse which covers several square miles.
		Wind turbo-generators mounted in the chimney would convert this 50km-an-hour rush of hot air into electricity.
	alt-e.blogspot.com /2004/11/solar-chimney-for-california.html (448 words)

	Self Comforted House ... (PAHS/ AGS/ Ferrocement)
		A solar chimney is heated by translucent dome, (which also serves as green house or as work room).
		Solar heated corduroy tubes then create a more classical thermal siphon to contribute heat to the earth tube storage behind the living space.
		The collector tubes are portrayed in purple to indicate solar heating, since the ferrocement tubes are intended to be exposed to sunlight.
	www.midcoast.com /~bo/PAHSgreenhouse.html (802 words)

	Solar Dish Stirling Engines (Site not responding. Last check: 2007-10-13)
		However the Solar Chimney utilises solar power unlike the Smoke Jack which turns in the rising hot gasses of the cooking range.
		A tall chimney is built in the center of a large transparent solar collector.
		As with normal chimneys or flues the taller the chimney the greater the draught obtained.
	www.stirlingengines.org.uk /sun/sola6.html (306 words)

	Earthbeat - 29/09/01: Solar Chimney: World First for Australia?
		The world’s first large-scale solar thermal power station could be up and running in Australia by 2005.
		Set to be the tallest human-made structure on the planet, the proponents say the solar tower will cost $700-million to build and produce enough power to fuel a regional city.
		The solar collector would be something in the order of three or four times the CBD area of Melbourne.
	www.abc.net.au /rn/science/earth/stories/s381152.htm (904 words)

	solar updraft tower power plant-sometimes also called "solar chimney" or (Site not responding. Last check: 2007-10-13)
		The Australian solar tower will be 1 KM high, about 3000 feet, which would make it the tallest man-made structure in the world.
		In fact, almost 35 jobs in the solar tower would be dedicated solely to tourist maintenance.
		Also, solar towers will likely be placed close to cities and not out in the wild so that there is not much energy loss in transferring electricity to cities, where it is needed.
	www.brynmawr.edu /geology/206/gruenstein2.htm (2152 words)

	Solar Tour - Saturday Homes
		Using a $7,500 home equity loan, the family was able to buy the corn stove, the solar hot water system [used], the PV system with a $3,600 grant from the state of Maryland and with Mike installing much of the system himself, a high-efficiency refrigerator, and 20 compact fluorescent light bulbs.
		Solar tube skylights decrease the need for lights during the day in the central bathroom and kitchen, while the light fixtures and lamps throughout the house all use compact fluorescents or T-8 fluorescents with electronic ballasts.
		The homeowners have opted to join the grid and use their solar panels to charge their batteries and use the grid for backup battery charging during sustained periods of cloudy weather, and directly for powering some appliances.
	www.solartour.org /saturday.htm (2443 words)

	Juiced.ca :: Canadian Alternative Energy! (Site not responding. Last check: 2007-10-13)
		Solar energy can be utilized as a form of heat, such as solar water heating, and as electricity, such as solar photovoltaics.
		Solar Nova Scotia is an affiliate member of the Solar Energy Society of Canada Inc. (SESCI), a not-for-profit organization dedicated to energy conservation and the use of renewable forms of energy.
		Solar Nova Scotia promotes an accelerated move to a 'soft energy path,' incorporating energy conservation and all forms of renewable energy: passive and active solar, photovoltaics, wind, biomass and geothermal.
	www.juiced.ca /solarlink.html (421 words)

	Solar Energy Think piece @ NaturalResearch.org (Natural Research) (Site not responding. Last check: 2007-10-13)
		A linear Fresnel reflector power plant uses a series of carefully angled plane mirrors to focus light onto a linear absorber.
		A 1998 joint study by the U.S. Department of Agriculture (USDA) traced many of the various costs involved in the production of biodiesel and found that overall, it yields 3.2 units of fuel product energy for every unit of fossil fuel energy consumed.
		Other major research is investigating economic ways to store the energy which is collected from the sun's rays during the day.
	www.naturalresearch.org /encyclopedia/Solar_energy (4278 words)

	DVD Talk Forum - Solar Chimney: World's Tallest structure
		The 200 megawatt solar tower, which will cost A$ 1 billion ($563 million) to build, will be of a similar width to a football field and will stand in the center of a massive glass roof spanning seven kilometers in diameter.
		Despite its size, the technology is simple -- the sun heats air under the glass roof, which slopes upwards from three meters at its outer perimeter to 25 meters at the tower base.
		Solar power and wind power will never work as long as we keep the 19th century notion that our power has to come from a big centralized conglomerate.
	www.dvdtalk.com /forum/printthread.php?t=261392 (2256 words)

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