IEEE: "Hydricity" Would Couple Solar Thermal and Hydrogen Power
IEEE Spectrum | Charles Q. Choi | 14 Dec 2015
Solar heat could help generate both electricity and hydrogen fuel at the same time in a system that scientists in Switzerland and the United States call "hydricity." Such a system could supply electricity round-the-clock with an overall efficiency better than many photovoltaic cells, researchers add.
There are two ways solar energy is used to generate electricity. Photovoltaic cells directly convert sunlight to electricity, while solar thermal power plants—also known as concentrating solar power systems—focus sunlight with mirrors, heating water and producing high-pressure steam that drives turbines...snip
...Today’s solar thermal power plants operate at temperatures of up to roughly 625 degrees C. However, the researchers noted that solar thermal power plants are more efficient at higher temperatures. What’s more, when they reach temperatures above 725 degrees C they can split water into it’s constituents, hydrogen and oxygen.
An integrated "hydricity" system would produce both steam for generating electricity and hydrogen for storing energy. And each makes the other more efficient. Set to produce hydrogen alone, its production efficiency approaches 50 percent, the researchers claim. This is because the high-pressure steam the system generates can easily be used to pressurize hydrogen. The substantial amount of power needed to compress hydrogen fuel for later transport and use is often neglected when it comes to calculating hydrogen production efficiency...snip
Full Article: http://spectrum.ieee.org/energywise/energy/renewables/hydricity-could-couple-solar-and-hydrogen-power
Also see: Hydricity – A New Power Source
Engineerpal.com December 16, 2015
Humans need of power to grow and develop itself is ever growing and everlasting. The search for renewable source of power has always been a priority for developers. One of the alternative found was solar energy. But as ingenious and environmentally friendly as solar energy solutions are, they’re not as efficient as we wish them to be and of course, they only generate electricity when the Sun is out...
The hydrogen fuel produced alongside the electricity is also important as not only could it find uses in transportation, but also in chemical production and other industries. It doesn’t discharge when stored or degrade with repeated use. When the Sun goes down, the stored hydrogen power could kick in, and that means turbines don’t need to be stopped or restarted saving alot of time and generating a alot more electricity....snip
Full: http://engineerpal.com/hydricity-power-source/
Cheap Green Electricity = Cheap Green Hydrogen
Solar Hydrogen is the fuel of the future. A GAME CHANGER.
http://www.amazon.com/Solar-Hydrogen-Future-Mario-Pagliaro/dp/1849731950/
Hydrogen- the Next Big Thing
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