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city water pipes used for generating electricity
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K
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30 Mar ’15 - 8:51 am
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that is simply brilliant, wonder if it affects water pressure.

PORTLAND, Ore. – A Portland water pipeline is now producing enough electricity to power more than a hundred homes.

The Portland Water Bureau is taking advantage of new technology developed here in the Rose City.

Drinking water flowing through the a water pipe below Southeast 147th Avenue and Powell Boulevard spins four turbines.

That spinning creates energy for PGE customers.

This is the first commercial application of Portland-based Lucid Energy's turbine technology.

Lucid Energy funded the $1.5 million project is sharing the revenue from the electricity sold to PGE with the water bureau.

"Energy is the single large cost, so if we can recapture energy that's already embedded in the flow, we can reduce the cost for everyone who needs it," said Gregg Semler, president of Lucid Energy.

Unlike hydropower generated from dams, this technology will not hurt any migratory fish, like salmon, or have any impact on the environment.

Lucid Energy sees more applications for the technology for companies that use huge amounts of water and also for use in agriculture.

http://www.kgw.com/s...../24085487/

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simthefarmer
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30 Mar ’15 - 9:56 am
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but, if it makes the pumps work harder (meaning using more energy) what's the point?

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K
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30 Mar ’15 - 10:18 am
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that's what I'm wondering, is the energy created equal to the extra energy consumed, or if there is any extra even needed

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simthefarmer
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30 Mar ’15 - 1:28 pm
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It just doesn't make sense to me. What else create energy than the pump? Gravity maybe?

If it only comes from pumps, this means that you are losing energy in the process not creating it.

That would be the equivalent to put motor on the front wheels of your electric car and alternators on the rear wheel and think that you would recharge the batteries at the same rate that you are using them.

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earthenstead
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30 Mar ’15 - 4:19 pm
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I used Google Street View to look at the intersection mentioned. It looks pretty flat, but based on some of the stuff I've seen about Ram Pumps and Micro Hydro, it may not take much for gravity to do the work. I suppose we'd need to see the hard numbers. If its a farce, its a costly one.

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K
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25 Jul ’15 - 9:43 am
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looks like SLC is giving it a go as well

http://www.ksl.com/?.....d=35603966

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