this post was submitted on 17 Feb 2024
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Showerthoughts

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If a machine is never 100% efficient transforming energy into work because part of the energy is converted into heat, does it mean an electric heater is 100% efficient? [@[email protected]](h (social.graves.cl)
submitted 9 months ago by [email protected] to c/showerthoughts
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If a machine is never 100% efficient transforming energy into work because part of the energy is converted into heat, does it mean an electric heater is 100% efficient? @[email protected]

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[–] [email protected] 3 points 9 months ago* (last edited 9 months ago)

that's only true if you shine it out a very large the window

normally windows cover a quite small fraction of a rooms surface area

but sure, if a few fractions of a percent leave through a window, i guess its technically not a 100% effective space heater, if we define the work as heating only the relevant room.