this post was submitted on 23 Oct 2025
517 points (96.4% liked)

Science Memes

17153 readers
2910 users here now

Welcome to c/science_memes @ Mander.xyz!

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.



Rules

  1. Don't throw mud. Behave like an intellectual and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.
  4. Infographics welcome, get schooled.

This is a science community. We use the Dawkins definition of meme.



Research Committee

Other Mander Communities

Science and Research

Biology and Life Sciences

Physical Sciences

Humanities and Social Sciences

Practical and Applied Sciences

Memes

Miscellaneous

founded 2 years ago
MODERATORS
 
you are viewing a single comment's thread
view the rest of the comments
[โ€“] rmuk@feddit.uk 8 points 23 hours ago (1 children)

๐Ÿค“ ACKSHUALLY

It's not possible for a heat pump - or anything - to even be 100% efficient, let alone 400%. Efficiency is measure of how much of the input energy gets converted to useful output energy, and since heat pumps don't actually create heat the useful output is the compressor's ability to pump refrigerant about. The Coefficient of Performance - the ratio between energy put in and useful work done - is 400% for a heat pump (give or take).

[โ€“] Canonical_Warlock@lemmy.dbzer0.com 15 points 20 hours ago (1 children)

heat pumps don't actually create heat

๐Ÿค“ ACKSHUALLY

Heat pumps create a fair bit of heat due to friction and electrical resistance in the compressor.

[โ€“] untorquer@lemmy.world 6 points 18 hours ago (1 children)

๐Ÿค“ AKSHUALLY

Energy is conserved. It is converted from another form of energy, or in this case mostly transported, not created.

[โ€“] Liz@midwest.social 3 points 10 hours ago (1 children)

Heat and energy are not the same thing, scrub. You can create heat no problem.

[โ€“] untorquer@lemmy.world 2 points 9 hours ago

Fuck me, every time with this "useful heat" bs...