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Totota Mirai breaks world record (1,000km) on single tank of Hydrogen

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Comments

  • Registered Users Posts: 8,295 ✭✭✭n97 mini


    innrain wrote: »
    Tell this to TGV, ICE, KTX to name the ones I've travelled with. The benefits of fast public transport outweighs the new bridge requirement. Can you imagine Dublin-Cork in 45 minutes?

    Ironic that you use Dublin-Cork as an example of something that doesn't exist!
    innrain wrote: »
    Would you still use a car? I don't want to calculate the weight of 100 GWh battery because is like asking to calculate the efort of pulling a car with square wheels. There is no point. The bridge issue once solved is solved for 100 years. You'll have to pull the battery every journey.

    Kinda the point I'm getting at... Huge battery vs small hydrogen tank.


  • Registered Users Posts: 20,978 ✭✭✭✭ELM327


    n97 mini wrote: »
    That may be the case, but neither answer the question. The power has to come from somewhere. Diesel is a fossil fuel.

    As for adding the overhead wire, that can be prohibitively expensive if there are low bridges along the route, as there inevitably are.
    So is hydrogen currently ;)
    But i was advised earlier on thread that a nissan e power and a hydrogen fool cell car are both EVs as they derive propulsion from a solely electric drivetrain.


  • Registered Users Posts: 20,978 ✭✭✭✭ELM327


    n97 mini wrote: »
    Ironic that you use Dublin-Cork as an example of something that doesn't exist!



    Kinda the point I'm getting at... Huge battery vs small hydrogen tank.


    It's not a small hydrogen tank
    Have you seen the weight and size of the 3 hydrogen tanks in a mirai? Not to mention the energy needed to compress the h2 to a ridiculous level .


    This is why h2 cars generally get ~50-60MPGe where EVs generally get over 90


  • Registered Users Posts: 2,036 ✭✭✭innrain


    n97 mini wrote: »
    Ironic that you use Dublin-Cork as an example of something that doesn't exist!
    Was not you that proposed to calculate the battery for a train going from Dublin to Cork?
    I made the point that is a non problem and better imagine how beneficial would be a fast electric train like those which currently exist.


  • Registered Users Posts: 8,295 ✭✭✭n97 mini


    innrain wrote: »
    Was not you that proposed to calculate the battery for a train going from Dublin to Cork?
    Yes, battery vs hydrogen, both of which could run on the Cork line as it currently exists, and is the highest frequency intercity service.

    Irish Rail have a tender out for hybrid electric/battery trains. I would imagine their intention therefore is limited overhead wires.

    But this is getting away from my point, which is broadly that 'fool cells', as some like to call them, will have a use in heavy transportation, IMHO.


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  • Registered Users Posts: 2,036 ✭✭✭innrain


    n97 mini wrote: »
    Yes, battery vs hydrogen, both of which could run on the Cork line as it currently exists, and is the highest frequency intercity service.

    Irish Rail have a tender out for hybrid electric/battery trains. I would imagine their intention therefore is limited overhead wires.

    But this is getting away from my point, which is broadly that 'fool cells', as some like to call them, will have a use in heavy transportation, IMHO.
    The thing with the H2 train is a bit of a distraction in a Mirai discussion. And if they want to buy hybrid trains they are probably green washing with some "mild" version where the battery runs the AC and the USB sockets.

    I understand the value of H2 in energy storage. Unfortunately for the last 100 years more than 95% is produced with the release of CO2. In fact it is one of the most pollutant processes as H2 is widely use in the production of fertilizers which are another source of pollution in themselves. The so called green hydrogen is produced with energy deficit and no commercial entity would step on it (without some for of subsidy). Even if we crack fusion and get "unlimited" energy from it.
    So H2 could be viable for long range road transport where it is hard to have efficient ways running wires for the trucks. For local public transport I'd say subways could be better solution on long term as compared with buses. Fun fact: how many capitals in Europe do not have an underground public transport?
    But it seems they are expecting to have the line electric by 2030. They are also considering high speed trains so I'm not talking crazy here.


  • Registered Users Posts: 8,295 ✭✭✭n97 mini


    innrain wrote: »
    The thing with the H2 train is a bit of a distraction in a Mirai discussion. And if they want to buy hybrid trains they are probably green washing with some "mild" version where the battery runs the AC and the USB sockets.

    And then there were distractions from the hydrogen powered trains :) I personally struggle to see a future for hydrogen powered cars, when a moderately size battery will suffice.

    As regards the "green washing", it's been a while since I read about the tender, but the trains will recharge when overhead wires are available and will be able to run for 60km on battery power alone.


  • Posts: 21,179 ✭✭✭✭[Deleted User]


    Once hydrogen can be mate entirely from 100% emission free energy source I can bet you won't see many battery only HGV's, trains, Buses etc if we can rely less on minerals and chemicals for batteries is that not a good thing ?

    I'm betting that Nuclear in some form or another will be a major source of power in the future, the amount of energy in diesel alone is mind boggling, getting this from the grid including powering all the cars is probably not practical.

    The only thing I have against hydrogen isn't against hydrogen it's against those who will control the prices and Governments who will extort people for taxed just like our own Government.


  • Moderators, Sports Moderators Posts: 18,449 Mod ✭✭✭✭slave1


    Saw one in the wild yesterday, nice looking car, fueled from locally generated H




  • Moderators, Sports Moderators Posts: 18,449 Mod ✭✭✭✭slave1


    Poxy resolution, location is Aberdeen where they've Hydrogen refueling in place since 2015



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  • Registered Users Posts: 20,978 ✭✭✭✭ELM327


    Fossil fuel car drives 1000km shocker



  • Moderators, Social & Fun Moderators Posts: 14,640 Mod ✭✭✭✭AndyBoBandy


    Maybe at least some good will comet of this, and they'll finally drop the 'Self Charging' fallacy



  • Registered Users Posts: 20,978 ✭✭✭✭ELM327


    Nah, it's pervasive at this point.

    Other OEMs are using it too



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