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Ouch ! - Obie - 10-09-2012
For those of you who are totally opposed to geothermal,here is some really bad news !!
PGV has been accused of producing more power than the Puna area can use.
Here is one solution and it could revolutionize transportation on the Big Island.
While the anti geothermal faction keeps coming up with reasons why geothermal will not work, they keep pushing an agenda that PV is the only way,that is ridiculous.
The hydrogen generation system will take the voltage spikes out of the grid that are caused by PV and wind !
http://hawaiitribune-herald.com/sections/news/local-news/pgv-could-power-buses.html
RE: Ouch ! - oink - 10-09-2012
That sounds very cool.
Pua`a
S. FL
Big Islander to be.
RE: Ouch ! - nana valley - 10-09-2012
Wish my car ran on hydrogen [^]
RE: Ouch ! - EightFingers - 10-10-2012
"compressed hydrogen"
RE: Ouch ! - Bullwinkle - 10-10-2012
Kinda like the graf zeppelin - Hydrogen was all the rage - the graf incident moved the commercial use and distribution of hydrogen to the back burner.
Be interesting to see the advances - the pressure required to store Hydrogen still spooks me:
Metal tank (steel/aluminum)
Approximate maximum pressure, aluminum 175 bar or 2,538 psi, steel 200 bar or 2,900 psi.
[edit]Type II
Metal tank (aluminum) with filament windings like glass fiber/aramid or carbon fiber around the metal cylinder.[5] See composite overwrapped pressure vessel.
Approximate maximum pressure, aluminum/glass 263 bar or 3,814 psi, steel/carbon or aramide 299 bar or 4,336 psi.
RE: Ouch ! - EightFingers - 10-10-2012
I can imagine the boom if one of those tanks was "kissed" by lava......
RE: Ouch ! - Bullwinkle - 10-10-2012
Never mind the lava - how about being rear ended with one of these in the trunk........
Helium was the primary choice for lighter than air because it does not burn.
In the 40's only the allies had a supply - against better judgement the designers used very unstable (lighter than air) hydrogen for lift in zeppelins because of supply issues. It didnt work out too well for them, hydrogen abandoned in due course.
put a couple of electrodes in water, supply a voltage - hydrogen will bubble off one side oxygen the other - pretty easy stuff to make....
RE: Ouch ! - pahoated - 10-10-2012
Fuel cell. Hydrogen tanks for fuel cells usually have chambers and there are more than a few solid storage systems on the near horizon. Auto manufacturers have done extensive tests with 5000psi hydrogen tanks and the cars have disintegrated with the tank intact.
http://images.thecarconnection.com/med/hydrogen-compression-tank_100227417_m.jpg
This contract is with Hydrogenics. Below is their installation for delivery vans, using 2 5000psi tanks. It will be interesting to see what the operational evaluation of the buses will be.
http://www.htdc.org/fuel-cell-powered-vehicles.html
RE: Ouch ! - Bullwinkle - 10-10-2012
Fuel cell - been waiting for years to buy one (10kw or so) for my off grid place. I lost money in the fuel cell stock boom - start ups never came through
Last i heard GM's (they were in the lead when I was paying attention)units have struggled with overheats and fires in testing.
Fuel cells work very well with any energy one feeds it - propane has always been in the forefront (just needs 120 psi for storage)
too bad they cant keep them from overheating - Fuel cells also produce water as a by product --- win win for us off grid folks.
Like I said Ive been waiting a good 20 years cash in hand as well as investing in fuel cell start ups - maybe the gov't can do
better.........
this is one example what could happen when chemicals come in contact with aluminum (imagine aluminum tanks full of hydrogen) never mind the car crash -grin
http://www.youtube.com/watch?v=6B6Q5fgE9qo
RE: Ouch ! - pahoated - 10-10-2012
Honda has had a fuel cell car for about 4 years now, just not in production.
There is going to be a big rollout of fuel cell cars in 2013, at least some production ready. This is going to be the first:
http://www.autoblog.com/2012/09/27/hyundai-ix35-fuel-cell-paris-2012/
Hyundai ix35 lays claim to world's first production fuel cell vehicle title
Honda has started putting in solar powered hydrogen stations in Japan. Almost sounds like free energy, solar producing electricity to break apart fresh water into hydrogen and oxygen. This independent hydrogen station infrastructure seems more likely to gain adoptance than a large central fill-up station. It's beginning, anyway.
http://www.greenoptimistic.com/2012/04/02/japan-solar-hydrogen-station/#.UHYWRBXA_gc
Japan’s First Solar-Powered Hydrogen Station, Made by Honda