Quiz
1. Burn petroleum, to boil water, to produce steam, to turn a turbine, attached to a generator, to feed the electric grid, which loses 25% due to resistance, to charge batteries in an electric car.
2. Burn petroleum in a car engine.
Which is more efficient?
In cold weather:
1. Pump warm air from a petrol engine's cooling system to heat the car's interior.
2. Pump warm air from a battery-powered electric heater to heat the car's interior.
Which is more efficient?