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Jon G4LJW #617625 16/02/20 04:13 PM
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Formerly known as Aldermog
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Originally Posted by Jon G4LJW
Originally Posted by Hamwich
Originally Posted by PaulV
I wonder if the gas network will end up transitioning to biogas or even hyrdrogen? Is the latter even feasible?
https://www.energy.gov/eere/fuelcells/hydrogen-pipelines



There's a fair amount of biogas already in the network, I am on a Green Gas tariff from Ecotricity. Not sure you could put hydrogen though the existing pipes though.


There is testing underway now, with the aim of converting the UK gas networks to 100% hydrogen....

https://www.h21.green




This will be an evolutionary process: hydrogen can be blended with natural gas up to, I understand, 20% without changing burners, jets, etc. An immediate 20% reduction in CO2.
Trials are underway.
https://www.northerngasnetworks.co....-uks-first-trials-on-public-gas-network/

Converting to 100% requires changes to burners and jets, but those of us old enough probably remember conversion from town gas to "HighSpeed" natural gas.
Central heating boilers vent their exhaust outside, there will be more steam, but that is OK.
Gas cooking is another matter: again, those of us old enough will remember the level of condensation produced by town gas, pure H2 will produce a lot more. Condensation will be an issue for many. So probably better to force the conversion of gas cookers to electric.
Hydrogen has almost twice the calorific value, as kw/kg, than natural gas. This will allow boilers to be more efficient.


Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...

Peter J #617716 17/02/20 07:37 AM
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A step in the right direction but I can’t see how hydrogen burning with natural gas can only produce water as an emission. Surely it is burning with air and not pure oxygen and so nitrous oxides etc will be produced. It’s different if used in a fuel cell.


Jays. Ex Morgan owner. 1967 MGB Roadster.,
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Originally Posted by Jays ex Nero
A step in the right direction but I can’t see how hydrogen burning with natural gas can only produce water as an emission. Surely it is burning with air and not pure oxygen and so nitrous oxides etc will be produced. It’s different if used in a fuel cell.


Yes, hydrogen will produce nitrous oxides when burnt in air, just as natural gas does. But the combustion is at atmospheric pressure, so oxides of nitrogen are formed at much lower levels than when burnt under pressure. One of the reasons that diesel engines produce so much NOx is that the compression ratio is high,


Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...

meabh #617936 18/02/20 10:36 AM
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Interested in a German perspective on EV..?

If so you might like to beam up vid

https://www.youtube.com/watch?v=hcXjVxaKzv4

Peter J #618034 18/02/20 11:04 PM
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Originally Posted by Peter J
Originally Posted by Jon G4LJW
Originally Posted by Hamwich
Originally Posted by PaulV
I wonder if the gas network will end up transitioning to biogas or even hyrdrogen? Is the latter even feasible?
https://www.energy.gov/eere/fuelcells/hydrogen-pipelines



There's a fair amount of biogas already in the network, I am on a Green Gas tariff from Ecotricity. Not sure you could put hydrogen though the existing pipes though.


There is testing underway now, with the aim of converting the UK gas networks to 100% hydrogen....

https://www.h21.green




This will be an evolutionary process: hydrogen can be blended with natural gas up to, I understand, 20% without changing burners, jets, etc. An immediate 20% reduction in CO2.
Trials are underway.
https://www.northerngasnetworks.co....-uks-first-trials-on-public-gas-network/

Converting to 100% requires changes to burners and jets, but those of us old enough probably remember conversion from town gas to "HighSpeed" natural gas.
Central heating boilers vent their exhaust outside, there will be more steam, but that is OK.
Gas cooking is another matter: again, those of us old enough will remember the level of condensation produced by town gas, pure H2 will produce a lot more. Condensation will be an issue for many. So probably better to force the conversion of gas cookers to electric.
Hydrogen has almost twice the calorific value, as kw/kg, than natural gas. This will allow boilers to be more efficient.



Well that will resolve the distribution problem for hydrogen fuel cells won't it. All that will be needed then is suitable compressors to bring it up to the pressure required. The only issue then will be that most likely H2 for burning will probably not be pure enough for use in fuel cells.


Peter

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meabh #618377 21/02/20 01:32 PM
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I have a sceptical attitude towards the idea that EV can be the solution for all car drivers. Especially the long distances are a problem with current technology, charging times and vehicle weight.
But I have always been open to the idea that commuting and urban traffic is a good thing for small battery cars.

Tesla was the first company to mix EV with positive emotions in the beginning. The Tesla Roadster was a statement that EV doesn't have to be ugly and boring.
But I never liked EV small cars. Now there is a small car that has conquered my heart very quickly and spontaneously. The "must have" factor, this important psychological element, is nicely included into the overall package in my view. I am not talking about cost, range and so on. I mean the design. It captivated me. I think that this Honda is something like an iPhone on wheels. A very simple but very proportionate approach. Comparable to "Bauhaus" design, like a Le Corbusier LC2 couch.

A small car to fall in love with, well done, Honda! (in my opinion)





I hope I am not repeating an old post but I have briefly scanned all of them on this thread. I know that this thread is more technical in nature, but I thought that there should be some joy to the eye.


'14 4/4 graphite grey
meabh #618383 21/02/20 02:42 PM
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Works for me...
I want to drive one.


Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...

meabh #618391 21/02/20 03:28 PM
Joined: Sep 2011
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Only 2 door and too small frown

How about?


Last edited by Gambalunga; 21/02/20 03:32 PM.

Peter

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meabh #618406 21/02/20 04:43 PM
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Talk Morgan Guru
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It is four door


'14 4/4 graphite grey
meabh #618432 21/02/20 07:44 PM
Joined: Aug 2010
Posts: 363
Learner Plates Off!
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I can't remember whether it was in another thread on here or in a different forum altogether that I saw a link to an excellent EV travelogue. One guy from Maine is halfway round a loop across Canada from east to west (which he did in January), down the west coast of the US, across the deep south, and back up the eastern seaboard. In a Porsche Taycan plug-in electric. Apologies if it was posted here and this is old news...

He managed to comfortably cover 600+ miles in a day across the Canadian prairies in the middle of winter, and up and down the Rockies between Calgary and Vancouver, relying mostly on the charging infrastructure set up by PetroCanada at gas stations along the Trans-Canada Highway. A bit of a challenge as he arrived in Calgary was sorted by the Porsche dealership there, despite the fact that the Taycan isn't yet available in Canada and most of their team hadn't seen one in the flesh. I read the whole lot the other evening, it's a fascinating warts-and-all look at long-distance touring from the perspective of an enthusiastic but realistic early-adopter.

https://www.taycanforum.com/forum/t...es-in-6-weeks-cross-country-journal.879/




Doug
1985 4/4 4str, Jubilee Blue
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