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Magma Power for Geothermal Energy?

WIND MEASUREMENTS


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    California, USA --When a team of scientists drilling near an Icelandic volcano hit magma in 2009, they had to abandon their planned experiments on geothermal energy. But the mishap could point the way to an alternative source of geothermal power."Because we drilled into magma, this borehole could now be a really high-quality geothermal well," said Peter Schiffman, professor of geology at UC Davis and a member of the research team along with fellow UC Davis geology professor Robert Zierenberg and UC Davis graduate student Naomi Marks. The project was led by Wilfred Elders, a geology professor at UC Riverside.

    A paper describing geological results from the well was published this month in the journal Geology.

    When tested, the magma well produced dry steam at 750 degrees Fahrenheit (400 degrees Celsius). The team estimated that this steam could be harnessed in a 25 MW capacity plant.

    That compares to 5 to 8 MW produced by a typical geothermal well, Elders said. Iceland already gets about one-third of its electricity and almost all of its home heating from geothermal sources.

    The team was drilling into the Krafla caldera as part of the Iceland Deep Drilling Project, an industry-government consortium, to test whether "supercritical" water -- very hot water under very high pressure -- could be exploited as a source of power.

    Sursa: renewableenergyworld.com