erice 732 Posted November 6, 2019 Share Posted November 6, 2019 https://video.news24.com/show/169204 Quote Link to post Share on other sites
harrytom 646 Posted November 6, 2019 Share Posted November 6, 2019 might as well fit a small reactor? Quote Link to post Share on other sites
erice 732 Posted November 6, 2019 Author Share Posted November 6, 2019 doesn't sound very practical Aqua's technology system will rely on two 28-ton vacuum isolated tanks, which are to be stored at temperatures as low as -253 C. The liquified hydrogen is converted into electrical energy by proton exchange membrane (PEM) fuel cells. a lot bull$hit when they say a ship is "launched" but actually mean "a proposal has been released" Quote Link to post Share on other sites
Ladyhawk 37 Posted November 6, 2019 Share Posted November 6, 2019 Crazy lookin boat, but that lounge at the bow would be awesome in sh*t weather! 1 Quote Link to post Share on other sites
khayyam 71 Posted November 6, 2019 Share Posted November 6, 2019 might as well fit a small reactor? then you couldn't come to NZ! Quote Link to post Share on other sites
darkside 61 Posted November 6, 2019 Share Posted November 6, 2019 Buying hydrogen is nearly as hard as plutonium in New Zealand at present. Hopefully that changes soon. Quote Link to post Share on other sites
erice 732 Posted November 6, 2019 Author Share Posted November 6, 2019 think big turn taranaki into a natural gas - hydrogen conversion plant source product can also be methane burps + farts from cows! - but how to capture it https://en.wikipedia.org/wiki/Hydrogen_production what could possibly go wrong The core Think Big projects included the construction of the Mobil synthetic-petrol plant at Motunui, the complementary expansion of the oil refinery at Marsden Point near Whangarei, and the building of a stand-alone plant at Waitara to produce methanol for export. Motunui converted natural gas from the off-shore Maui field to methanol, which it then converted to petrol on-site. Declining oil prices rendered this process uneconomic and saw a reduction in the production of synthetic fuel, however the industry still remained at large due to prior investment. New Zealand would abandon the manufacturing of synthetic petrol in February 1997, allowing the plant to switch the focus to methanol.[3]. Quote Link to post Share on other sites
MarkMT 68 Posted November 6, 2019 Share Posted November 6, 2019 might as well fit a small reactor? I'm thinking whoever designed that grew up watching Star Trek... https://scifi.stackexchange.com/questions/94554/why-did-warp-cores-become-vertical 1 Quote Link to post Share on other sites
Black Panther 1,591 Posted November 6, 2019 Share Posted November 6, 2019 Once again, hydrogen is not an energy supply but an energy storage medium. Quote Link to post Share on other sites
Island Time 1,235 Posted November 6, 2019 Share Posted November 6, 2019 Absolutely BP, like a battery or a tank of diesel. Quote Link to post Share on other sites
khayyam 71 Posted November 6, 2019 Share Posted November 6, 2019 Yes, but you can make it from water+electricity -- unlike diesel. Turning 'naki gas into hydrogen doesn't make a lot of sense, but you could certainly use all of that spare electricity down south if the smelter stops using it. Quote Link to post Share on other sites
darkside 61 Posted November 6, 2019 Share Posted November 6, 2019 "Renewable" energy for hydrogen production will be here soon. Tuaropaki Trust and some Canadians will be using geothermal to produce hydrogen next year at Taupo. Hiringa and Ballance using wind turbines in Taranaki on much the same timeline. Quote Link to post Share on other sites
wheels 543 Posted November 6, 2019 Share Posted November 6, 2019 I really cannot see liquid hydrogen being stored on a Boat for all sorts of practicle reasons. Besides, how would you fill the tanks again. No ordiary tanker is going to be able to pop down to the local marina and jerry cans from a Car refilling station is not going to be sucessful. Quote Link to post Share on other sites
erice 732 Posted November 7, 2019 Author Share Posted November 7, 2019 the LNG tankers that supply gas to japan from the timor gap? and kamchatka? have HUGE well insulated, spherical pressure tanks on them to keep the natural gas low volume liquid but there is still a "boil-off" which is captured and runs the ships engines presumably a superyacht as big as this hydrogen beastie will still have a daily liquid hydrogen boil-off AND won't actually spend a lot of time at sea maybe it could run the fuel cells and provide power back into the grid? Quote Link to post Share on other sites
wheels 543 Posted November 7, 2019 Share Posted November 7, 2019 But liquid H is vastly colder than LNG. It boils at -252C. A pressure vessel of hydrogen is ruffly at 5000PSI. But interestingly, liquid Hydrogen is not an economical means of storing the energy it contains. Umm, how do I explain that better? It has poor energy density. You can actually store more Hydrogen energy in a Hydrocarbon liquid like Petrol, than as pure liquid Hydrogen. In fact, there is ruffly 65% more hydrogen in a ltr of Petrol than a ltr of pure Liquid Hydrogen. Try getting your head around that one. Quote Link to post Share on other sites
Black Panther 1,591 Posted November 7, 2019 Share Posted November 7, 2019 Using electricity to make hydrogen will use more energy than it creates. And electric motors at way more efficient than a combustion engine. So why would you bother? Quote Link to post Share on other sites
harrytom 646 Posted November 7, 2019 Share Posted November 7, 2019 Last Sunday was privileged to go for a test drive in a Tesla model 3,0 to 100 in 3 seconds,full charge 650km apparently and if charged at home $2. $90k though. battery they say will last at least 300thousand kms before replacement. Quote Link to post Share on other sites
wheels 543 Posted November 7, 2019 Share Posted November 7, 2019 Using electricity to make hydrogen will use more energy than it creates. And electric motors at way more efficient than a combustion engine. So why would you bother? Correct if you make it the old fashioned way using electrolysis. But that it not how it is produced commercially. And the article states that the Hydrogen is passed through a cell producing electricity. So the Vessel must be electric powered. Modern Hydrogen powered Vehicles are electric powered. Are far better for the environment than anything battery powered and most especially for the Countries that get electricity from means other than Hydro. The only thing holding them back is the refilling stations. Electric charging is easy to install. Hydrogen refueling stations will require a large chunk of investment to establish. Quote Link to post Share on other sites
Black Panther 1,591 Posted November 7, 2019 Share Posted November 7, 2019 So what is the modern way of producing hydrogen and what is the energy calculation for it? Quote Link to post Share on other sites
wheels 543 Posted November 7, 2019 Share Posted November 7, 2019 There are several processes and some are still so new, the technology is still secret. Currently, the cheapest commercial method is steam reforming of Hydrocarbons. Especially the "Off Gasses" that are produced during refining.I use a method in my plant that purifies the off gasses and turns them to Hydrogen and that is then fed back to the burner for heating the plant. That allows me to start the plant on a liquid fuel and then once it is running, reduce the liquid fuel consumed as the Hydrogen kicks in. It is a beautiful clean burning and very hot flame. Quote Link to post Share on other sites
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