Test being done in Teesside of 100% Hydrogen replacement in gas mains
- Thread starter BigTom
- Start date
WouldBe
Dislicksick
Provided the charger you are using can charge that fast. Not sure there are a lot of the quick chargers around.
Chz
Stark Raving Sane
They're not really the same scale. Fuel cell cars use hybrid-sized batteries. It takes up half the boot on a Mirai.So do petrol vehicles. You need something to provide electrical power when the 'engine' isn't running.
BigTom
Well-Known Member
More quick chargers around than hydrogen filling stations, and that's a number that is increasing as we speak. I doubt there's much reason to install new chargers which are not at that level of capacity either.
Sasaferrato
Super Refuser!
That figure is for charging at 100A.
A 24 kW power draw.What sort of new electrical infrastructure are you going to need for 30 Tesla's in a street?
Chz
Stark Raving Sane
Street charging will never (I shouldn't say never, but certainly not soon) be at that rate because it's mainly used for long blocks at a time. Quick chargers will essentially replace petrol stations, but you'll have the added option to slow charge at home. Right now, because they're pushing new tech, fast chargers cost about the same as slow ones. I'd expect that to change, because it's fairly trivial to roll out slow chargers in street lamps, but fast ones need infrastructure installed. So it may well be that a 400 mile jaunt down the motorway costs more than the equivalent distance spend over a few days in town. The very fastest chargers are effectively subsidised by Tesla, as their charging infrastructure is a massive selling point of the cars.That figure is for charging at 100A.
What sort of new electrical infrastructure are you going to need for 30 Tesla's in a street?
Chz
Stark Raving Sane
Except behind the rear seats is normally the load compartment. They're being deliberately obtuse at best there, redefining what a boot is, outright lies at worst.So it doesn't take up half the boot then.
The main point being that it's rather larger than the battery in a petrol powered car, and more akin to what a Prius uses. Now the Prius is a decent bit of engineering and they hide it away under the car and sacrifice a bit of fuel space for it (it's more efficient, so it needs less fuel anyhow). I can't apologise for the Mirai's shit design that makes it take up boot space.
I would say that it's a bad example, but it's the best selling fuel cell car in the world so it has to be representative.
Sasaferrato
Super Refuser!
Chz
Stark Raving Sane
That makes no sense. The power grid would have to be green to produce green hydrogen. Most of it is currently produced from natural gas and is horrible for the environment.
I really fucking hate Elon Musk, even if Tesla is doing a good job of pushing new tech. My bias is the laws of physics - hydrogen cannot be more efficient than green grid plus batteries. It would literally violate the laws of the universe.
Sasaferrato
Super Refuser!
WouldBe
Dislicksick
Never said it would be more efficient just in some circumstances can be more convenient.
Pumping hydrogen to people's houses would eliminate the losses in the electricity grid so would make more sensible for heating than electric. If hydrogen was pumped through the gas network it may be easier to produce hydrogen refueling stations by taking the gas from the mains and compressing it to refuel vehicles.
newbie
undisambiguated
Someone is going to live next door to this battery recycling plant, and to the main factory, planned to be Britains 4th biggest building. Someone has to insure it, and the rumour I heard is that no-one will.
Sasaferrato
Super Refuser!
You store hydrofluoric acid in copper vessels. The first acid reacts with the copper, which produces copper fluoride, which is impervious to hydrofluoric acid.
NoXion
Craicy the Squirrel
Industrial processes in "uses harmful chemicals" shocker. There are precious few industries which don't use harmful or noxious chemicals of one sort or another. If insurers are hesitant, then that's most likely because they don't have enough information, at least not yet. Presumably the factory operator will provide it in due time, since I doubt they would go ahead without insurance.
Sasaferrato
Super Refuser!
Every place pretty much uses noxious chemicals. I was the COSHH officer for a 640 bed hospital.
a_chap
When the world came apart, where were you?
equationgirl
Respect my existence or expect my resistance
BigTom using heat pumps on a single domestic dwelling (say a 3 bedroom property designed for effective heat design) is a very different proposition that a road of four storey sandstone tenements designed around coal. There's also likely to be limited greenspace behind the tenements where the heat pumps can be situated. Without effective measures like insulation, some kind of supplementary heat is probably needed.
SpookyFrank
A cheap source of teeth for aquarium gravel
Bearing in mind we can't just replace the methane in our domestic boilers and cookers with hydrogen because hydrogen is approximately 4.3 fucktons more flammable than methane and we'd all be horribly killed.
WouldBe
Dislicksick
No you'd have to change all the jets in gas appliances just as they did with the change from town gas to North sea gas.
