Glaciologist Jason Box describes a post-warming world that you won’t even be able to recognize.
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A whiff of science fiction surrounds the entire idea: storing excess summer heat deep in the earth, only to retrieve it in the cold of winter. But researchers in Zurich have developed a revolutionary system that does just that.
Via Diedert Debusscher, Hans De Keulenaer Delete the scoop?
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One major advantage of renewable energy is access to a reliable supply of power at a more predictable price than conventional grid-supplied electricity. That’s especially important to tech companies like AT&T, which has just announced that it is expanding its use of fuel cells to power 28 data centers and other facilities in California and Connecticut. Via Hans De Keulenaer Delete the scoop?
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The technology is the brainchild of founder Danielle Fong, who initially wanted to use compressed air to power scooters, but has since turned her attention to a larger order of storage: grid-scale.
While compressed air storage isn't a new invention, by any means, Fong's innovations greatly improved the efficiency of this type of system, which has been hampered by efficiency losses of up to 50%. Fong's improved version uses a mist of water sprayed into the air storage tanks, which acts to absorb and store the heat generated from the compression (and release it on expansion), allowing the LightSail system to achieve a 90% thermodynamic efficiency in the process, and a 70% overall round-trip efficiency. Via Hans De Keulenaer, Diedert Debusscher, James Ferguson, Duane Tilden Delete the scoop?
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