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What temperature do you keep your thermostat at? (lemmy.zip)

submitted 1 year ago by sudoroot@lemmy.zip to c/asklemmy@lemmy.ml

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Title. We keep ours at 75F, parents do 77F, and in laws 68F. It made me curious what everyone else keeps theirs at?

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[-] juliebean@lemm.ee 7 points 1 year ago

older ones are often electrical, but not really electronic. they use a bimetal strip that bends due to changing temperatures, to complete a circuit at the point you set the slider. it's actually a really fascinatingly simple bit of tech.

[-] PsychedSy@sh.itjust.works 3 points 1 year ago

Mine growing up used a bit of mercury in a sealed vial mounted to that bimetallic strip.

[-] juliebean@lemm.ee 1 points 1 year ago

any idea what the mercury was for? something about getting the heat in and out of the strip faster maybe?

[-] metheos@feddit.de 3 points 1 year ago

The Mercury is in a glass tube with two wires and the tube is attached to the bimetallic strip in such a way that the motion of the Mercury due to gravity as the strip moves will close the circuit between the two wires. The Mercury is just being used a liquid conductor.

[-] PsychedSy@sh.itjust.works 2 points 1 year ago

Yeah, sorry. It was the switch! Two wires on one side. When the capsule tilts from the strip/coil it makes the electrical connection.

[-] juliebean@lemm.ee 1 points 1 year ago

that is fascinating, thank you and @metheos@feddit.de for the elaboration. quite clever.

this post was submitted on 27 Aug 2023

186 points (100.0% liked)

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