08-25-2012, 11:24 AM
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#21 (permalink)
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Master EcoModder
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I think it takes 3-3.5X as much electricity to make hydrogen equivalent to just using the electricity to power an EV directly. By that measure, a kilogram of hydrogen is about equivalent to 100kWh of electricity.
I wish I owned a practical hydrogen powered car -- I could park it next to my unicorn!
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08-25-2012, 03:35 PM
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#22 (permalink)
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Master EcoModder
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Quote:
Originally Posted by NeilBlanchard
I wish I owned a practical hydrogen powered car -- I could park it next to my unicorn!
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I am SOOOOOO jealous.......you own a unicorn!!!!!!!
Post pics!!!! |
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08-25-2012, 06:00 PM
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#23 (permalink)
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...beats walking...
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• a UNI-corn:
• MULTI-corn:
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08-25-2012, 07:57 PM
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#24 (permalink)
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Corporate imperialist
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Water electrolysis is horribly inefficient.
Driving an electric vehicle 30 miles should use about $15 worth of power unless you live in a really screwed up state that over charges for electrical power for no reason, like california.
To go 30 miles on water split hydrogen it would be more like $40 or $50 worth of power.
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08-31-2012, 11:02 PM
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#25 (permalink)
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Intermediate EcoDriver
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Quote:
Originally Posted by oil pan 4
Driving an electric vehicle 30 miles should use about $15 worth of power unless you live in a really screwed up state that over charges for electrical power for no reason, like california.
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I'm glad I live in Arizona. I can drive my 4 liter V-6 Mustang 30 miles on less than $5 worth of gasoline (at this point in history, anyway). I must be doing something really wrong....
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Originally Posted by elhigh
The presence of traffic is the single most complicating factor of hypermiling. I know what I'm going to do, it's contending with whatever the hell all these other people are going to do that makes things hard.
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Last edited by Mustang Dave; 08-31-2012 at 11:15 PM..
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08-31-2012, 11:59 PM
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#26 (permalink)
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Corporate imperialist
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Opps that should have been $1.50 worth of power.
Still takes many dollars worth of electrical power to split 2KG of hydrogen, up to $50 for 30 miles worth of hydrogen still stands.
Altho if you factor the cost of a new electric vehicle that you dont drive much in it could be far higher than $15 a mile.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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12-20-2012, 02:59 AM
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#27 (permalink)
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EcoModding Lurker
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Quote:
Originally Posted by thomason2wheels
What would really be interesting to see would be hydrgen powered car, even from a tank of compressed hydrogen, with the engines characteristics optimized for the fuel. That would be cool.
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BMW did such in 2007
BMW Hydrogen 7 - Wikipedia, the free encyclopedia
They gave one to the company that I was working for at the time (which was about 1 mile from their HQ in Germany) According to Wikipedia, it got a whopping 4.7mpg on H2-on a 6.0L V12 |
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12-20-2012, 09:03 AM
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#28 (permalink)
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Master EcoModder
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Quote:
Originally Posted by chickmagnt311
BMW did such in 2007
BMW Hydrogen 7 - Wikipedia, the free encyclopedia
They gave one to the company that I was working for at the time (which was about 1 mile from their HQ in Germany) According to Wikipedia, it got a whopping 4.7mpg on H2-on a 6.0L V12 |
Weight was seriously increased due to the H2 tank, which also reduced the trunk quite a bit.
The tank wouldn't even fit a smaller-sized vehicle without taking up all of the boot space ...
H2 in compressed, cooled state has never been a serious contender for use as a car fuel, nor will it ever be.
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06-08-2013, 02:57 AM
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#29 (permalink)
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PaulH
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I was thinking about using my 5.6kW DC array for generating some hydrogen. I have no idea how to safely compress and store it, and how to use it for fuel. I have 2 large graphite rods, but I'm not sure of a good way to attach the copper wire to the rods. At the very least, I could catch it and maybe send up some balloons.
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06-08-2013, 11:01 AM
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#30 (permalink)
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Mr. Holmes wins the prize for hydrogen transportation effieiency. Blow up enough balloons to get you airborne, AND RIDE THE WIND TO THE OTHER SIDE OF THE PLANET.
Great mileage on your solar powered balloon car. 
regards
Mech
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