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Back of the napkin math, 63,000 gallons of gasoline per day. 33kWh of energy in each gallon of gasoline. Internal combustion approximately 33% efficient at turn
by gergi137 2y ago
Back of the napkin math, 63,000 gallons of gasoline per day. 33kWh of energy in each gallon of gasoline. Internal combustion approximately 33% efficient at turning that energy into propulsion while batteries and electric motors are ~90% efficient. A Tesla megapack stores 3,854 kWh and weighs 84,000 lbs.
63000*33*.33/(3854*0.9)*84000 = 16,782,563 lbs or ~7,600 metric tons worth of batteries for 1 day's worth of "electric fuel"
- throwaway5959 2y agook so it’s sounding like only nuclear could provide a sustained electrical supply, but that has obvious hijacking concerns. Gah. Thanks!
- lukan 2y agoYou do not like fuel cells? Ammonia/methan/pure hydrogen do not have the fuel density like diesel, but it is still very managable. Possibly even better all in all im terms of weight, as you need less fuel.
- Beldin 2y agoFor comparison: apparently, "fuel" weighs about 3.7854 kg per gallon, so 63,000 gallons weigh about 238.5 tons.