Green Energy could be produced from the worlds evaporating water in the future. Scientists have already produced two small engines that run solely on evaporating water. They using energy generated by bacterial spores.
The Earth has a lot more surface water than surface land, with about 71% of our planets outer most layer being water.
This means that the potential could be immense, for building future ocean surface energy generators.
Scientists at the University of Columbia have developed a new way of generating energy from water vapors.
Ozgun Sahin the lead researcher has found that certain bacterial spores shrink and swell from changes in the environmental humidity. These tiny bacteria have more energy producing potential per gram than any other method used in engineering.
Saghin and a team of colleagues from Columbia University got to work and based on bacterial spores energy potential, build two engines that could harness this type of power.
The engine is basically a “wheel” that turns as a result of the pull created by tension generated by spores contracting and reacting.
The singles piston engine is made by gluing spores to both sides of a plastic tape creating a dashed line of spores. When the humidity changes due to dry or moist wind the spores contract along with the tape or the band releases gathered tension.
The result is a movement similar to that of the heart muscle, contracting when the air is dry and releasing when humid.
The team then placed dozens of these tiny muscles together in order to create a stronger one.
They placed the device in a floating plastic case topped with shutters. When the air became humid from evaporating water inside the case, the “muscle” elongated, and opened the shutters , the shutters allowed dry air to enter the case, and made the bands release tension, then the process continued to repeat.
The technology allowed the team to build engines powerful enough to power a light bulb or small ocean sensors.
With this type of devices, but build at a larger scale, scientist will have the ability to build devices that generate more power per gram than solar farms.
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