NOTE URLs or email addresses are hyperlinks which when accessed transfer direct
to the web page or your email program.
SOLAR PV Energy 21, , www.energy21.org.uk Has a sample of the Dye Solar Cell (Graetzel
Cell, renewable energy general, many other interesting contacts. Nanocrystalline
Solar, Dye Solar Cells, reportedly 20% of the cost of silicon ones of the same efficiency.
See www.dyesol.com and for an experimental one for school and college use www.ice.chem.wisc.edu
(Hands on Science Kits No. 98-001) Estimated production cost of electricity from
these much the same as large power stations, i.e about 3p/kWhr. Estimated total PV
(Solar electric power) available in UK, using all suitable wall and roof surfaces
was given in 1994 as between 200 and 360 TWh of electricity per year from an installed
capacity of between 70 and 110 GW. (ETSU report R-82, quoted in a written House of
Lords answer to the Earl of Liverpool by Lord Clinton-Davis of 2 Feb 1998.) .
1/. Uses a Fresnel lens to focus the sun's rays onto a very small piece of photovoltaic
In order for a high-x solar concentrator to work, the lens must be pointed directly
at the sun. This requires a tracking system that moves the module in both the altitude
(distance above the horizon) and azimuth (the angle across the horizon) dimensions.
Tracking is also "closed loop," meaning that it does not rely on GPS locators or
an internal clock to get its bearings; it relies solely on internal sensors to find
and track the sun.
Concerns using the Fresnel lens system either commercially now, or due to be available
in the near future, includ
eA] Green and Gold Energy in Australia http://www.greenandgoldenergy.com.au whose
500 Watt SunCube™ was launched to the world at the Green City Festival (Elder Park,
Adelaide, Sunday, 17 Feb 2008), and are now reportedly commercially available in
Auastralia, New Zealand and the South Pacific through www.zolardistributors.com
Best price ex works for 2000+ units = $950/unit
B] Sunflower in the USA whose units are currently undergoing performance testing
C}Soliant Energy is an award-winning manufacturer of innovative concentrating solar
panels. They state that our rooftop solar concentrator offers an efficient and cost-effective
solution for solar electric systems.http://www.practical-instruments.com
2/. Uses a reflective “dish” similar to those used for Stirling CSP using glass mirrors.
A recent innovation by Cool Earth Solar has taken a radical approach to building
CSP PV by manufacturing round plastic balloons, to reflect light onto the solar cell
Because its design uses relatively cheap and uses readily available components,
it is estimated these solar concentrators could generate electricity at a cost comparable
to that of natural-gas plants
Solarr8 Converts Sunlight Into Both Electricity and Heat!
The five metre long and one meter wide Solar8 produces both 230 V electricity and
50º hot water. Solar 8 is not suited for private homes, but instead is developed
for property owners with large building who would like to produce electricity and
Solar Stirling Systems 25 kW generator Bank of units Stirling
Saliant Energy Freznel Lens Bank
Solar System Australia CS500 Unit CSP PV
UMUWA SOLAR POWER STATION Australia, Solar Systems
10 CS500 dishes are equipped with 22% efficient silicon-based photovoltaic (PV) cells.
The power station has a rated capacity of 220kW.
Solar Power Tower, Mirrors concentrate Solar Heat onto a central point.
The diagram, below, shows the main components of a parabolic trough type of CSP plant.
Each of the 'solar collectors' is a trough-shaped mirror (with a parabolic cross-section)
that tracks the sun and focuses the light on to a tube containing 'heat transfer
fluid'—which is normally some kind of oil. The hot oil passes through a 'solar superheater'
and 'steam generator' where the heat boils water and creates superheated steam. The
steam drives the turbine, the turbine drives the generator and that feeds electricity
into the electricity transmission grid.
Steam that comes out of the turbine is still quite hot. It is fed through a condenser
where it is cooled down by cooling water from a cooling tower. The cooled water is
fed back into the steam generator and solar superheater to create superheated steam
again, and this is fed back into the turbine to generate more electricity.
'Trough systems' use parabolic trough-shaped mirrors each one of which focuses light
on to a tube containing oil or similar fluid that takes the heat to where it can
be used to raise steam and generate electricity.
'Power towers', for example, use a large field of sun-tracking mirrors to concentrate
sunlight on to a receiver on the top of a low tower, to raise steam and generate
Solar Two tower and heliostats in Daggett (Barstow), California