حسام عشقی صنعتی

Hesam Eshghi Sanati

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The Key to the Battery-Powered House

By Randy Wright / 2009

Scientists have created a small-scale prototype battery that could store enough energy to power a house for most of the day. Is this small disk the key to cost-effective solar-powered homes?

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When scaled up in size, this prototype battery could store enough energy to power a house for most of a day.
 
Without a way to store their power, no number of solar panels will free a home from the electrical grid. Researchers at Utah-based Ceramatec have developed a new battery that can be scaled up to store 20 kilowatt-hours—enough to power an average home for most of a day. An easy sell for solar users, but it could also allow the grid-bound to stockpile energy during less expensive off-peak hours.

The new battery runs on sodium-sulfur—a composition that typically operates at greater than 600 F. “Sodium-sulfur is more energetic than lead-acid, so if you can somehow get it to a lower temperature, it would be valuable for residential use, Ralph Brodd, an independent energy conversion consultant, says.

Ceramatec’s new battery runs at less than 200 F. The secret is a thin ceramic membrane that is sandwiched between the sodium and sulfur. Only positive sodium ions can pass through, leaving electrons to create a useful electrical current. Ceramatec says that batteries will be ready for market testing in 2011, and will sell for about $2000.
 
  
نویسنده : Hesam Eshghi Sanati - حسام عشقی صنعتی ; ساعت ۱:٢٩ ‎ب.ظ روز یکشنبه ۱٥ شهریور ۱۳۸۸
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