15 Aug '11, 12pm

Storing Wind Energy as Hydrogen

Water electrolysis produces hydrogen. As the electricity flows through the water in an electrolysis unit, oxygen and hydrogen are evolved as gases at separate electrodes. In a 100% efficient unit, it takes about 39 kilowatt hours (kWh) of electricity to create 1 kilogram (kg) of hydrogen. In the real world, electrolysis units are about 80% efficient at best. With an 80% efficient unit, it takes about 50 kWh of electricity to create 1 kg of hydrogen. The hydrogen is piped to a hydrogen storage unit. To avoid the high cost of compressing hydrogen or of cooling and liquefying hydrogen, a good alternative is to store the gas in a metal hydride slurry. Safe Hydrogen uses magnesium as the metal and mineral oil as the liquefying agent. With the use of small particles and a suitable dispersant, the particles will stay in suspension almost indefinitely. Using a hydriding reactor, h...

Full article: http://www.cleantechblog.com/2011/08/storing-wind-energy-...

Tweets

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renewableenergyworld.com 15 Aug '11, 6pm

But in Iowa this weekend, support resonated with many of the top Republicans — minus Rep. Michele Bachmann, the winner of ...

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businessgreen.com 14 Aug '11, 11pm

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UTC Hydrogen Fuel Cell Sets Performance Record on Oakland AC Transit Hybrid Electric Bus:

UTC Hydrogen Fuel Cell Sets Performance Record ...

cleantechnica.com 15 Aug '11, 2pm

A UTC Power PureMotion 120 System hydrogen fuel cell in an Alameda-Contra Costa Transit (AC Transit) hybrid electric bus h...

In Iowa, most GOP nominees back wind

renewableenergyworld.com 15 Aug '11, 5pm

But in Iowa this weekend, support resonated with many of the top Republicans — minus Rep. Michele Bachmann, the winner of ...

A Republican Shout-Out for Wind Energy

green.blogs.nytimes.com 18 Aug '11, 10am

American Wind Energy Association Newt Gingrich, who supports a tax credit for wind energy, signing a turbine blade in Iowa...

Solving wind power’s variability with more wind power

Solving wind power’s variability with more wind...

grist.org 14 Aug '11, 12pm

This post originally appeared on Energy Self-Reliant States , a resource of the Institute for Local Self-Reliance's New Ru...

World first as innovative waste-to-hydrogen filling station opens #energy #renewable #hydrogen

World first as innovative waste-to-hydrogen fil...

renewableenergymagazine.com 22 Aug '11, 8am

In addition to generating hydrogen, the project also creates electricity and heat from this renewable source. This technol...

Green Blog: A Republican Shout-Out for Wind Energy

green.blogs.nytimes.com 18 Aug '11, 11am

American Wind Energy Association Newt Gingrich, who supports a tax credit for wind energy, signing a turbine blade in Iowa...

From @Earthjustice: An Ill Wind Blows In Moapa

From @Earthjustice: An Ill Wind Blows In Moapa

earthjustice.org 14 Aug '11, 8am

Show the power companies you are in control, turn off all electrical usage in your home, If everyone turns off the lights,...

GWEC: #Turkey has a target of increasing the co...

gwec.net 13 Aug '11, 6am

Recent years have seen the start of a wind energy boom in Turkey. Even before the groundbreaking tender in November 2007 (...

Energy Storage Industry Grows To Integrate Wind...

renewableenergyworld.com 17 Aug '11, 1pm

“We still hear people say storage isn’t ready for primetime, but that isn’t the case because we already have 20-MW storage...

Energy Storage Industry Grows To Integrate Wind...

renewableenergyworld.com 17 Aug '11, 1pm

“We still hear people say storage isn’t ready for primetime, but that isn’t the case because we already have 20-MW storage...

Why is it so hard to acknowledge wind power as ...

awea.org 12 Aug '11, 4pm

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treehugger.com 11 Aug '11, 7pm

Iowa's wind generation reached 20 percent of the state's total electricity network during the second quarter, the American...

Urban Green Energy's Skypump lets you drive like with the wind

Urban Green Energy's Skypump lets you drive lik...

green.autoblog.com 10 Aug '11, 10pm

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