3 ms·

No machine has perfect efficiency

• laurencerowe 4y ago
  The losses are heat. Resistive heating is 100% efficient. Use a heat pump though and you can get to 300%-400% efficiency because you are using the energy to move heat from one place to another instead of turning it into heat.
  • bergenty 4y ago
    You’ve got to expound on this a little more because 300-400% efficiency doesn’t make sense.
    • Orochikaku 4y ago
      The comment you're replying to probably meant to say it has a coefficient of performance [1, 2] of 3-4. [1] https://en.wikipedia.org/wiki/Coefficient_of_performance https://en.wikipedia.org/wiki/Coefficient_of_performance [2] https://en.wikipedia.org/wiki/Heat_pump#Performance https://en.wikipedia.org/wiki/Heat_pump#Performance
  • Schroedingersat 4y ago
    Referring to COP as efficiency is an intentionally misleading practise pushed by the heat pump industry that makes communication worse for everyone forever if we accept it and doesn't really help anyone. Refer to it as COP or as moving 3 units of heat for one unit of input.
• deleted 4y ago
  [deleted]