Money to Burn
Danielle Fong of LightSail Energy, a young prodigy entrepreneur.
“Compressed air is cheap, long-lasting and extremely scalable, but it’s inefficient. The thermodynamic loss channel is that compressed air gets hot, and from PV=NRT, you have to do more work to compress hot air. Similar problem with cooling losses on the recovery side. So you want to cool the compression and heat the decompression. So we spray water and create a heat exchanger inside the vessel.”
Compressed air can store energy with without loss for 20 years.
“We are currently seeing 60-70% efficiency, 94% of the thermal efficiency target. We should be ready to ship in 2014.”