Evaporation another form of energy
We have seen the future, and it is evaporation. That at least is the hope of researchers who utilized the evaporation of water to produce energy; their findings were published in a recent issue of the journal Nature Communications. Among renewable energy sources, solar and wind have a big head start, but the sun doesn’t always shine nor the wind always blow. Solar and wind energy can of course be stored, but only by using expensive batteries. Gleaning energy from the evaporation of water as it transitions from a liquid to a vapor state eliminates the storage problem as the technology can be turned on and off at will.
The researchers developed a machine that controlled humidity with a shutter that caused bacterial spores to expand and contract as the shutter opened and closed. The energy expended from the spores was connected to a generator. The study concluded that deriving energy from evaporation in this manner could, theoretically, account for up to 70 percent of America’s energy needs, especially in hot, dry regions such as the Southwest. The technology has yet to be tried on a large, real-world scale, however.