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UK power grid situation!!
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Black Phoenix:

--- Quote from: IanB on December 14, 2022, 04:30:01 pm ---
--- Quote from: tggzzz on December 14, 2022, 08:49:55 am ---One example of an SMR being used to generate hydrogen is in the special case of using the hydrogen locally in an industrial process.

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For anyone not keeping up with acronyms, SMR is steam methane reforming, which is an industrial process to extract hydrogen from natural gas, producing carbon dioxide as a side product.

In the hydrogen world, there are different "colours" of hydrogen. For instance "grey" hydrogen is produced from reforming where the CO2 is simply discharged to the atmosphere. Then there is "blue" hydrogen, where the reforming process is still used, but the produced CO2 is captured and not released to the atmosphere. Or there is "green" hydrogen, which does not use reforming at all, but instead uses electrolysis of water or some other process that does not create any CO2.

The desire is to move towards green hydrogen, but there are issues of scale and efficiency still to be resolved.

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Ideally a tech would come where we could also convert the CO2 in Graphite and Oxygen...
tom66:

--- Quote from: tggzzz on December 14, 2022, 08:49:55 am ---I always like to point out there is less hydrogen (and hence hydrogen bonds) in a 1 litre of hydrogen than in 1 litre of petrol/diesel. Using hydrogen to power aircraft leads to the aircraft looking like a Super Guppy on steroids :)

One example of an SMR being used to generate hydrogen is in the special case of using the hydrogen locally in an industrual process.

--- End quote ---

Another reason we need to figure out synfuels :).  There have been a few attempts at making jetfuel from algae but not all that successful or economical.  Some other projects are looking at making it using fuel cells.  It's an interesting concept.  It's vanishingly unlikely we'll find a way to stop using jet fuel any time soon.
tggzzz:

--- Quote from: IanB on December 14, 2022, 04:30:01 pm ---
--- Quote from: tggzzz on December 14, 2022, 08:49:55 am ---One example of an SMR being used to generate hydrogen is in the special case of using the hydrogen locally in an industrial process.

--- End quote ---

For anyone not keeping up with acronyms, SMR is steam methane reforming, which is an industrial process to extract hydrogen from natural gas, producing carbon dioxide as a side product.

In the hydrogen world, there are different "colours" of hydrogen. For instance "grey" hydrogen is produced from reforming where the CO2 is simply discharged to the atmosphere. Then there is "blue" hydrogen, where the reforming process is still used, but the produced CO2 is captured and not released to the atmosphere. Or there is "green" hydrogen, which does not use reforming at all, but instead uses electrolysis of water or some other process that does not create any CO2.

The desire is to move towards green hydrogen, but there are issues of scale and efficiency still to be resolved.

--- End quote ---

That's the "wrong" SMR :)

"My" SMR is "Small Modular Reactor", e.g. https://eandt.theiet.org/content/articles/2021/11/rolls-royce-wins-210m-to-progress-small-modular-reactors/
or
https://www.constructionnews.co.uk/supply-chain/rolls-royce-nuclear-supply-chain-awaiting-signal-from-ministers-24-11-2022/

--- Quote ---Rolls-Royce has told MPs that the supply chain is eager for the government to signal its further commitment to the building of small modular reactors (SMRs).

SMRs, which are small-scale nuclear power plants, can be largely built offsite in factories. This saves on time, cost and carbon emissions, compared with traditional nuclear reactors; construction risk is also minimised with this approach, according to Rolls-Royce’s chief executive for its SMR business, Tom Samson.
...
An SMR could take four-to-five years to build, he estimated.
...
“The government is investing in these new technologies through the £385m Advanced Nuclear Fund, including £210m towards the Rolls-Royce SMR programme.”
...
The UK government has committed £210m to the building of SMRs, after £250m of private investment was raised. Rolls-Royce is leading the consortium to develop these nuclear reactors, which includes contractors Laing O’Rourke and Bam Nuttall.

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IanB:

--- Quote from: tggzzz on December 14, 2022, 09:03:20 pm ---That's the "wrong" SMR :)
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Well that's a problem with TLAs, especially since steam methane reformers are themselves commonly used to produce hydrogen in industrial processes  :)
Zero999:

--- Quote from: themadhippy on December 06, 2022, 12:28:01 am ---
--- Quote ---Modern LED Christmas lights hardly use any power.
--- End quote ---
they dont,but
 
--- Quote ---The magic is back at the National Trust’s Kingston Lacy near Wimborne, Dorset. Over a million twinkling lights and seasonal sounds will fill the air with festive fun.
--- End quote ---

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I have a set of 100 Christmas tree lights which use a total of 2.4W, so a million will only use 24kW. If the lights twinkle, they'll have a lower duty cycle and use even less power.
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