rlubikey Posted February 29, 2020 Report Share Posted February 29, 2020 Yes, hydrogen by electrolysis is indeed inefficient, but it has the potential to be clean if it's done with low/zero carbon electricity. (Hydrogen from ammonia is definitely NOT clean.) The thing about renewable energy is that it is highly variable in nature. You have to have much more in terms of "boiler-plate rating" so that the nominal output is is sufficient to to run the grid. (And even then it's not guaranteed - not even with lots of energy storage!) So, what do you do with the surplus electricity? You make hydrogen of course. It doesn't matter that it's inefficient because we have to have the surplus and what else would we do with the power? (I can never remember if the efficiency of hydrogen is 25% or 33% end-to-end, but it's something like that. Compare with any decent battery which should be 80%.) The point is that hydrogen-powered vehicles - be they fuel cells or infernal combustion - are much more capable of giving us the range we're used to, and you can re-fill one in the same time as it takes to fill your tank with lovely petrol. The other thing is that we won't have to beef-up our electricity network to fast-charge cars so that people can move on after only ONE cup of coffee. Laying in extra copper to cope with increased power consumption is EYE WATERINGLY expensive! Cheers, Richard Link to comment Share on other sites More sharing options...
Colin Lindsay Posted February 29, 2020 Report Share Posted February 29, 2020 47 minutes ago, rlubikey said: Laying in extra copper to cope with increased power consumption is EYE WATERINGLY expensive! Cheers, Richard THAT doesn't matter so long as it's green. In the news this week, the third runway at Heathrow and other road upgrade issues, all binned or postponed as they're not in line with emissions and climate policies. Link to comment Share on other sites More sharing options...
dougbgt6 Posted February 29, 2020 Report Share Posted February 29, 2020 If you want green this is the way forward, keep it out the back it'll keep the grass in check. Give it oats now and again and the exhaust is very useful stuff. Sportier models are available for the speed obsessed. db Link to comment Share on other sites More sharing options...
Chris A Posted February 29, 2020 Report Share Posted February 29, 2020 2 hours ago, rlubikey said: Laying in extra copper to cope with increased power consumption is EYE WATERINGLY expensive! Cheers, Richard How green is the manufacturing process of copper cables Link to comment Share on other sites More sharing options...
Colin Lindsay Posted February 29, 2020 Report Share Posted February 29, 2020 1 hour ago, dougbgt6 said: If you want green this is the way forward, keep it out the back it'll keep the grass in check. Give it oats now and again and the exhaust is very useful stuff. Sportier models are available for the speed obsessed. db Have you seen the expense?? Not only the initial purchase but also the running costs? Eye-wateringly more expensive than electric cars, and nowhere near as useful. My darling daughter can make hers fly, but she doesn't pay for the fuel... 1 Link to comment Share on other sites More sharing options...
rlubikey Posted February 29, 2020 Report Share Posted February 29, 2020 2 hours ago, dougbgt6 said: If you want green this is the way forward, keep it out the back it'll keep the grass in check. Give it oats now and again and the exhaust is very useful stuff. Sportier models are available for the speed obsessed. db Personally Doug, I'd keep the young lady in the house and put the horse out the back. But each to their own I suppose! For reference by the way, I've just asked my Nearest And Dearest and she tells me that you need about two acres to keep one horse fed on grass. Cheers, Richard 1 Link to comment Share on other sites More sharing options...
Chris A Posted February 29, 2020 Report Share Posted February 29, 2020 1 hour ago, rlubikey said: For reference by the way, I've just asked my Nearest And Dearest and she tells me that you need about two acres to keep one horse fed on grass. Cheers, Richard Second that, friends of ours who keep horses base their needs on 1 hectare per horse 1 Link to comment Share on other sites More sharing options...
dougbgt6 Posted February 29, 2020 Report Share Posted February 29, 2020 1 hour ago, Chris A said: Second that, friends of ours who keep horses base their needs on 1 hectare per horse My grass is very long? East Berks meet at the Shire Horse near Maidenhead. 10 years ago there were stables and shire horses, but Chef & Brewer bought it and turned it into a gastro pub. They knocked down the stables and built houses. I still don't eat their burgers. Doug Link to comment Share on other sites More sharing options...
Colin Lindsay Posted February 29, 2020 Report Share Posted February 29, 2020 56 minutes ago, dougbgt6 said: I still don't eat their burgers. Doug Mmmmmmm... Dobbin. Link to comment Share on other sites More sharing options...
68vitesse Posted February 29, 2020 Report Share Posted February 29, 2020 I thought the emissions from cattle assisted global warming so as horses have a similar diet how are more horses planet friendly. A horse produces over forty pounds of methane per year cattle substantially more, should we ban cattle stop all dairy products and steaks?. Regards Paul Link to comment Share on other sites More sharing options...
dougbgt6 Posted February 29, 2020 Report Share Posted February 29, 2020 All mammals produce methane, as do, surprisingly, insects. We should just get rid of the worst offenders, insects, cows, people. That should save the planet, no insects, no food chain, sorted. Doug Link to comment Share on other sites More sharing options...
Pete Lewis Posted February 29, 2020 Report Share Posted February 29, 2020 just got wind of this topic !!!!! Pete Link to comment Share on other sites More sharing options...
mark powell Posted March 1, 2020 Report Share Posted March 1, 2020 The planet will always survive in one form or another. It's the many and varied inhabitants that will not. 3 Link to comment Share on other sites More sharing options...
johny Posted March 3, 2020 Report Share Posted March 3, 2020 Aw give it a million years and new inhabitants will come along that eat plastic, are unaffected by radioactivity and breathe CO2.... Link to comment Share on other sites More sharing options...
68vitesse Posted March 3, 2020 Report Share Posted March 3, 2020 10 minutes ago, johny said: Aw give it a million years and new inhabitants will come along that eat plastic, are unaffected by radioactivity and breathe CO2.... Think they already live in the fens. Regards Paul 2 Link to comment Share on other sites More sharing options...
poppyman Posted March 3, 2020 Report Share Posted March 3, 2020 12 minutes ago, 68vitesse said: Think they already live in the fens. Regards Paul There are a few around here as well, they keep knocking at the door trying to give me leaflets..... I don't know what planet they are from? Tony. Link to comment Share on other sites More sharing options...
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