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You are thinking too small, with a car generating power that cheaply you could use it to power a turbine and provide cheap electricity to the entire world. It w
by username90 7y ago
You are thinking too small, with a car generating power that cheaply you could use it to power a turbine and provide cheap electricity to the entire world. It would fix our energy needs for a very long time and it would usher a new age!
- adrianN 7y agoOr the car could just be very efficient. Gasoline has a lot of energy. Transporting a person 100km on 34MJ/l * 0.05l =1.71MJ doesn't sound as impossible as you make it seem.
- username90 7y agoTrains transports at 0.41 MJ/t·km. If the person weights 0.1t it would take a train packed full of people 41MJ per person to transport them 100km, or a bit more than one litre of gasoline. I don't think it is possible to go significantly below that without transporting them on mag rails or vacuum pipes. Secondly we talked about 0.005l cars, not 0.05l, so it would be a few hundreds times more efficient than train transportation.
- adrianN 7y agoBicycles are probably a bit more efficient than trains.
- username90 7y agoIts about the same, you burn several thousand calories or a few tens of mega-joules biking 100 km.
- stefs 7y agomy strava says 100km cycling is ~3370kcal