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Joined 1 year ago
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Cake day: July 4th, 2023

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  • Most engines are less than 30% efficient at producing movement. The majority of the energy is lost as heat.

    Thermodynamics tells us that pretty much all energy ends up as heat. In a closed system, any device that uses energy is 100% efficient at making heat. A 1000W computer will make exactly as much heat as a 1000W heater.

    A 100% efficient engine can only exist if the desired output is heat, thus making it a pretty useless engine. Also, in a closed system, the exhaust cannot leave.