this post was submitted on 18 Dec 2023
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Science Memes

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I've invented a 100% efficient combustion engine (aussie.zone)
submitted 11 months ago by [email protected] to c/[email protected]
27 comments fedilink hide all child comments
 

I use it to heat my house.

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[–] [email protected] 49 points 11 months ago (2 children)

There's no such thing as a 100% efficient "engine". But in this case, since the waste heat is put to use (heating the house), OP thinks there's a loophole.

But, house would also need to be soundproof. Any noise leaking to the outside is lost energy.

[–] [email protected] 24 points 11 months ago* (last edited 11 months ago) (1 children)

Ah, but that’s by design: it also acts as a soothing white noise machine.

Then you might point out the exhaust and all it’s associated wastes, but that’s by design: it produces a heady and aromatic product for recreational huffing.

Then you might point out the vibrations, but that’s by design: the engine also provides invigorating massages to relax taut muscles.

[–] [email protected] 13 points 11 months ago

You. Come sell my book

[–] [email protected] 5 points 11 months ago (1 children)

Let's allow a rounding error for 99.51% shall we?

[–] [email protected] 9 points 11 months ago

Don't tell anyone, but I actually only used 1 significant figure, so anything above 50% will do.

I'm also using the version of significant figures where I work backwards from the answer, otherwise I'd need 95% or higher and that's too difficult.