Alternative fuels
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Alternative fuels

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    Alternative fuels Alternative fuels Presentation Transcript

    • Alternative fuel technologies Guy Geens < [email_address] > http://www.iggyland.com/ http://kanonnenpoetser.blogspot.com/ http://www.slideshare.net/ggeens Barcamp Antwerpen 2010
    • Baseline: fossil fuels
        Advantage
      • Well-established technology
      • Vast network of fuel stations
        Disadvantage
      • (Relatively) limited supply
      • Pollution
      • CO 2
    • Improving the combustion engine
      • Increasing efficiency
        • Ongoing engineering effort
        • Theoretical limit: Carnot engine
      • Reduce toxic emissions
        • Catalyst
        • Particle filter
      • Start/stop
        • Some improvement, depending on driving profile
    • Hybrid
      • Charge a battery during
        • Deceleration (breaking)
        • Descending
        • Excess energy from combustion engine
      • Use the saved energy to drive an electrical engine
      • Increases milage
      • Additional batteries increase weight
    • Purely electrical engine
        Advantage
      • Silent
      • No exhaust gasses
      • Charge at home
        Disadvantage
      • Only as green as the power plant
      • Limited action radius
        • Swap-out batteries?
      • Long recharge times
      • Weight of batteries
    • Energy density
    • More about batteries
      • Batteries add to the weight of a car
      • Charging generates heat
      • Battery technology puts limits on
        • Load current
        • Battery lifetime
        • Duty cycle
      • Li is low weight
        • Explosive (somewhat)
        • Toxic
    • LPG
        Advantage
      • Standard combustion engine
      • Less exhaust gasses
      • Well-known technology
      • Lower cost
        Disadvantage
      • (Outdated) security measures
        • Limits availability
        • And use
      • Limited supply (fossil fuel)
      • Still requires gasoline to start
    • Natural gas (CNG)
        Advantage
      • Lower exhaust
      • Fill at home
      • Uses a modified gasoline engine
      • Safer than gasoline
        Disadvantage
      • No fuel stations available
      • NG network is not designed for high volumes
      • Limited supply
        • Different from petrol
    • Ethanol
        Advantage
      • Can be produced from waste products
      • => no CO 2 during use
      • Uses a modified combustion engine
        Disadvantage
      • Significant energy cost during production
        • CO 2 balance can be negative
    • Hydrogen
        Advantage
      • Exhaust gas is pure water
        Disadvantage
      • Hydrogen needs to be made
        • Uses energy
      • Storage and transport issues
        • H 2 leaks
      • Safety
        • Explosive
    • Thank you for your time Questions?