CO2 releases per kWh?

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dreamer
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CO2 releases per kWh?




by dreamer » 22/03/10, 13:46

Bonjour.
I just read this:
https://www.econologie.com/europe-emissi ... -3722.html

Out, I just heard here:
http://terreaterre.ww7.be/la-fee-electricite.html
that the releases were announced at the beginning of nuclear as 106 gr / kWh and that they were currently well above several hundred grams, despite the nuclear, ie more than the TGV stations for example.
A friend working in the audit energetics told him I was a European average around 200 grams per kWh ...

So what about it?
France and its nuclear tjs it is too low despite the aberrations to heat mainly with electricity, thus forcing more often during rush hours has recourrir a thermal booster stations?

Thank you :)

Edit: ah well the question was put on FS:
http://forums.futura-sciences.com/envir ... erite.html

We feel that the complexity of the measures possible to say everything and its opposite, as we want to defend one side or the other -_-

But we can also talk tjs here? :)

We can put this topic in this link:
https://www.econologie.com/forums/nucleaire- ... 39-10.html

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by Christophe » 22/03/10, 13:55

https://www.econologie.com/forums/search.php rather than going to see on FS : Cheesy:

This question already has (largely) been debated and resolved, here is a part of the answer:

Image

For more information, read:

https://www.econologie.com/nucleaire-et- ... -4235.html
https://www.econologie.com/forums/nucleaire- ... t8139.html

And especially: https://www.econologie.com/forums/comparatif ... t7776.html (page 2)

The EU average is higher than 200 gr / kWh.

Average of Europe 15: 0,46 CO2 kg / kWh elec.


I'll add the links on the page that you quote.
Last edited by Christophe the 22 / 03 / 10, 14: 07, 1 edited once.
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by dreamer » 22/03/10, 14:04

Wow thank you for that answer;)

I'm not sure I understand all the diagrams .... but it seems that the adage "nuclear = little co2" is not so true?

Interesting because in Belgium we are in full debate, the minister has unfortunately extended to 10 years 3 the closure of older plants (which produce a total sth like 1 GWh and are therefore not so important in the total but ... this is a bad sign sent).

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by Christophe » 22/03/10, 14:13

A) No it is not true but if the CO2 is the only (false) argument of the nuclear advocates.

I say false argument because nuclear (fission) will never exceed more than 5% of the energy in the world ... and as we're all on the same global boat ...

Now the finance fission nuclear fusion ... that it has a greater potential ...

B) All nuke plants will be extended in the world ... with respect to their specifications initial load.

But the Belgian nuclear power plants reactors Westinghouse US are given (originally) to 40 years of life while the French (AREVA COGEMA) are given to 20 years ...

In France, the oldest plant has already 30 years (Fessenheim) ... and is struggling to turn lately ... view http://fr.wikipedia.org/wiki/Centrale_n ... Fessenheim

C) This chart summarizes I find:

Image
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by I Citro » 22/03/10, 15:21

:P : Arrowu: Ah well then my car would emit far less CO2 then. :?: :P
Me that according to the previous data was calculating in 90g of CO2 / km ...
Here I visited 21g of CO2 / km with my electric cars that consume 20kWh / 100km. 8)

In any way the emission figures announced by automakers are false because they do not take into account emissions from the well to the pump or at least from the refinery to the pump ...
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by Did67 » 22/03/10, 17:09

It's a bit an endless story: there is of course the primary energy consumed by the production cycle, but also upstream, gray energy exploration, embodied energy in manufacture of equipment used for exploration, gray energy exploration of the ore used to extract the metal used to make the drive to the engineer who designed the system used for prospecting ...

Fortunately, at some point, it becomes negligible.

But it is true that when you take a liter of fuel, it is not just one liter of fuel, but liter more the fulness of gray energy ...

Ditto for nuclear power: What is gray energy of a kg of uranium prospected, mined in northern Niger, back, refined ???

So yes, I think the range is very wide depending on whether we are for or against ... and whether we try to "take everything into account" (when we are against) or to "take nothing into account" ( when we are for) ...
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by Ptilu » 22/03/10, 17:25

Cricri why you said that nuclear power can only supply 5% of the world CONSSO? On what basis you feeling?
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by dreamer » 22/03/10, 17:32

> because nuclear power only produces electricity and represents 5% of the primary energy produced in the world. (15% of the world's electricity)

did67> by calculating all this, a Belgian study had shown that CO2 emissions by nuclear power were much less than other technologies currently in use (coal, gas, oil)
Minimum 1 / 3 less in the worst case if I remember correctly.
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by Ptilu » 22/03/10, 17:43

dreamer>
So is the case currently, but the share going up right?
I believe there is currently 200 reactor planned or under construction, against 500 active. So by going to necessarily increase. I am wrong?
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by Christophe » 22/03/10, 20:44

Ptilu wrote:Cricri why you said that nuclear power can only supply 5% of the world CONSSO? On what basis you feeling?


Ben on uranium production : Cheesy:
Yes I am talking about 5% of primary energy.

Image

Read: https://www.econologie.com/forums/energie-mo ... t5902.html

No relative share will not increase, because for installed nuclear 1kW, 10kW (at least) are coal or gas ...

China opened (in 2008, 1 so shortly before the crisis) coal plant 1 week ...

here is Card siting of nuclear power plants worldwide
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