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How much electricity wats/amps/volts etc would you need to produce enough Hydrogen/HHO whatever to power car?

I know size of motor matters etc. Say a small 4 cylander car averaging 30 mpg highway.

Im trying to prove in laymans terms the laws of diminishing returns to a friend but Im not good at the math nor fully understand the Loss areas involved. Wanted a good example to use. IE it would take a "blank" 5000? watt generator to produce the ammount of needed gas to make the car function in average conditions...

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  • paul h
    Lv 7
    8 years ago
    Favorite Answer

    According to this article....

    "It takes about 1 kg of hydrogen to replace 1 U.S. gal of

    gasoline. About 200 MJ (55 kWh) of dc electricity are

    needed to liberate 1 kg of hydrogen from 9 kg of water by

    electrolysis"

    http://www.fuelcellforum.com/reports/E21.pdf

    55 kWH is equivalent to 55,000 watts per hour. A "kW" is a kilowatt which is a 1000 watts so 55 kW H is 55,000 watts per hour in DC voltages required to split water into hydrogen.

    kW = kilowatts

    H = hour

    Some related articles on water fueled cars, hydrogen production, fuel cells, etc...

    http://www.popularmechanics.com/science/energy/nex...

    http://www.technologyreview.com/news/405464/cheap-...

    http://www.greenoptimistic.com/category/hydrogen-p...

  • 8 years ago

    Great question. Another person here equated the amount of electricity needed to make hydrogen if the hydrogen was burned in an internal combustion engine. I'll show how much electricity would be needed to drive 30 miles in a hydrogen fuel cell car.

    *

    A fuel cell car is an electric car. The electric motor drive can typically get 4 to 5 miles per kilowatt hour. Fuel cell systems are typically 40% - 60% efficient. And the electrolysis process (getting hydrogen from water) is 50% - 80% efficient. Multiplying the midrange values of each gives us an overall efficiency of 33%.

    *

    So if the electric motor drive system is good for 4.5 miles per KWH, we would need 3 KWH to go 4.5 miles, and 20 KWH to travel 30 miles. At the national average average electricity cost of 11 cents per KWH, this would cost $2.20, which is cheaper than gasoline.

    *

    Battery electric cars are more efficient than this because you can put the electricity directly into a battery, and avoid several steps.

  • ?
    Lv 4
    5 years ago

    fossil gasoline powered automobile produce water additionally. A fossil gasoline is likewise prevalent as a hydrocarbon which is composed of hydrogen and carbon. to realize this all you may desire to is seem on the chemical formulation. Methane, as an occasion, is CH4. while burned and oxidized it creates a million particle of CO2 and a couple of debris of H2O. this is a fascinating theory. It concerns the place you get the hydrogen from. This have been given me to thinking that sea tiers would desire to be defined, particularly, via the H2O that has been emitted via skill of the burning of fossil fuels. i'd desire to be way of base right here besides the indisputable fact that this is a fascinating theory. I advise that additionally does not mitigate the outcomes of sea point upward thrust via melting of land based glaciers and thermal develop.

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