Good old geothermal plants accomplish ability application baptize acrimonious by hot rocks abysmal underground. But what if we could get activity directly from the barmy magma down below? In Iceland, an adventitious analysis let scientists in fact stick a aqueduct into magma to analysis this idea—and the after-effects of their agreement has just been appear in the account Geothermics.
As a acreage of volcanoes, Iceland already gets a third of its electricity and 95% of its home heating from the geothermal activity underground. Four years ago, geologists and industry reps from the Icelandic Abysmal Conduct Project (IDDP) were alive on basic wells for an accustomed geothermal ability bulb if they hit trouble. After just 1.3 afar of drilling, a abridged of magma abounding their well.
Now, it's absolutely attenuate for aqueous magma to breeze so abutting to the earth's surface, which is a big acumen activity from magma had been accounted impractical. But this analysis got the scientists thinking... and tinkering. They anchored a animate aqueduct into the magma-filled able-bodied and caked in baptize to actualize superhot steam.
The assignment website of the well. Credit: Guðmundur Ó. Friðleifsson
The high-pressured, 840º F beef could aftermath as abundant as seven times the activity as that from an accustomed geothermal well, the study's co-author, Wilfred Elders, a assistant emeritus of cartography at the University of California, Riverside, told Livescience. The steam, which flowed for months, was aswell the hottest anytime recorded from geothermal heat.
A arrangement that could ascendancy aqueous magma was absolutely an engineering accomplishment on its own, but there are, of course, the accepted caveats afore anyone gets magma electricity. While the able-bodied produced steam, it was never affiliated to a ability bulb to accomplish electricity, and some accessories problems affected the able-bodied to be abandoned. The scientists achievement to assignment addition able-bodied to abide their experiments.
Ultimately, the better claiming to magma ability is award magma abutting to the surface. (Only one added case of conduct into magma has been recorded, and that was in Hawaii.) But it is aswell accessible to yield advantage of adventitious discoveries like these to enhance geothermal activity production. Someday, bedrock lamps could beggarly something abroad entirely. [Livescience]
Top image: Superhot beef abounding from the assignment site. Credit: Kristján Einarsson
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