The Power of the Sun
The video shows how the tube of an old tv can be used to achieve remarkable high temperatures and burn through coins, bottles and wood in mere seconds. This power is used on a large scale in thermal concentrated solar power plants. If one contemplates that in areas like southern Libya or Australia the sun radiates ca. 8 kwh per m2 per day and assume an electric conversion with an efficiency rate of 12.5%, then the yield would be ca. 1 kwh per m2 per day. Remember that 1 kwh is the maximum daily physical labour equivalent of an adult man.
Youtube text: Very few Australians are aware of molten salt storage technology and how it allows us to switch to 100% renewable energy in a very short space of time.
Russell Beard of Earthrise goes on a tour of Gemasolar, near Seville, Spain – the first Concentrated Solar Thermal Power plus molten salt storage (CSP+) plant to produce energy 24 hours per day. This power tower plant produces 20MW, enough to power 25,000 homes but much bigger CSP+ plants are now being in the Middle East and the US that will produce 100MW and 150MW. Even larger CSP+ plants are possible.
Research by Beyond Zero Emissions (www.beyondzeroemissions.org) and the Energy Research Institute, Melbourne University shows that a combination of
* energy efficiency and an upgraded grid plus a mix of:
* 60% CSP+ (comprising 12 solar regions each containing 19 220MW plants located in the high-insolation vicinities of Carnarvon, Kalgoorlie (WA), Port Augusta (SA), Mildura (VIC), Bourke, Dubbo, Moree, Silverton (NSW), Roma, Longreach, Charleville, Prairie (QLD)) and
* 40% wind (comprising 23 wind regions in Albany, Bunbury, Esperance, Geraldton (WA), Cape Jaffa, Ceduna, Port Augusta, Port Lincoln, Streaky Bay, Yongala (SA), Cooma, Crookwell, Orange, Silverton, Walcha (NSW), Ballarat, Mt Gellibrand, Port Fairy, Wonthaggi (VIC), Atherton, Collinsville, Georgetown, Stanthorpe (QLD)) and
* a small hydro/biomass backup for a few days in winter
can provide all of Australia’s energy needs including those of transport assuming a fuel-switch from oil to electricity. Plans on Buildings, Transport, Land Use & Agriculture, Industrial Processes and Coal Revenue Alternatives will be coming out over the next two years.
and for information specifically on Concentrated Solar Thermal Power and what’s happening in the rest of the world but hardly in sunny Australia