Energy storage gravity

Renewable energies except solar electric or thermal (seeforums dedicated below): wind turbines, energy from the sea, hydraulic and hydroelectricity, biomass, biogas, deep geothermal energy ...
lilian07
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Re: Energy Storage gravity




by lilian07 » 12/01/18, 18:40

The, I agree, maybe cogeneration is irrelevant in this case especially if they are large relocated plants with heat networks.
For me neither housing nor transport (excluding aviation) will be a problem, industry and the rest of the economy will remain a point of attention during low energy fluctuations.
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sicetaitsimple
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Re: Energy Storage gravity




by sicetaitsimple » 12/01/18, 19:00

lilian07 wrote:The, I agree, maybe cogeneration is irrelevant in this case


Maybe, in this case? Which case? We are talking about a future (whatever its horizon) with a lot of intermittent renewals, this is the subject, right? You wrote well a little higher:

"We must electrify everything in France and Europe and move before 2040 to 90% renewable (realistic today including with intermittent)."

Where did I dream?
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lilian07
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Re: Energy Storage gravity




by lilian07 » 14/01/18, 12:17

Yes it was in this case that I am talking about, 90% of renewable energies by 2040 ... In any case, the remaining 10% will be stock energy that is difficult to apprehend today. Certainly paradoxically an old fuel like abundant coal, common on the planet and exploitable by the greatest number ... But in my opinion photovoltaics will be the keystone of the intermittent system which has become for the occasion less fickle, through storage , the enormous surface carried out wherever there is room (roof, favorable ground, ...), localized distribution and large relocated power plants (Africa, Eastern Europe ...).
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perplex
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Re: Energy Storage gravity




by perplex » 19/12/18, 14:44

It's still in the lab, but it's promising ... https://www.futura-sciences.com/science ... ite-58708/
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Re: Energy Storage gravity




by izentrop » 19/12/18, 16:59

Thermal storage, not gravity in this case
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perplex
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Re: Energy Storage gravity




by perplex » 19/12/18, 17:42

perplex wrote:It's still in the lab, but it's promising ... https://www.futura-sciences.com/science ... ite-58708/


It's just 2x months expensive month that gravitational, so it's in its place ... will tell the mistress, I dream : roll:
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Re: Energy Storage gravity




by Gaston » 19/12/18, 17:53

perplex wrote:It's just 2x months expensive month that gravitational, so it's in its place ...
Uh no
In this case, why not have it posted in a subject on batteries, another on inertial storage and still on heat storage by phase change ...

Tomato juice is cheaper than gasoline and it tastes better, that's not why it is in its place in a topic on fuels.


It would be quite interesting in a separate subject, but here it just misleads an existing topic.
Moreover, it makes your message not found since it does not have a suitable title.
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perplex
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Re: Energy Storage gravity




by perplex » 19/12/18, 18:47

It is true that the last post dates from one year, I leave you between keke
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Re: Energy Storage gravity




by Exnihiloest » 19/12/18, 18:50

The assertion that a tank of 10 meters in diameter associated with wind turbines, or solar energy, would be enough to ensure the electric autonomy of 100.000 outbreaks seemed to me highly fanciful, and the journalist so competent that it does not arise the question of volume, the only one that matters.

So I did the math.
Let's put a 10mx10m tank, volume = 785 m³, mass of silicon: 1.832.333 Kg, energy recovered to go from 2300 ° to 1900 ° = 513.053 MJ = 143 MWh, then for the thermal conversion efficiency => electricity it does not do not count on more than 30%, either in the end 43MWh, or 0,43 KWh per household : roll:

We are reassured, we can recharge the laptop. : Lol:
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