Comment on Now we're cooking with gas!

lagg_mine@lemmy.world ⁨1⁩ ⁨day⁩ ago

• Devial@lemmy.world ⁨1⁩ ⁨day⁩ ago

  Yes it would. Adding material generally makes thermal conductivity worse. There is no material with negative thermal resistance, so adding more will always increase thermal resistance by at least a bit.

  The only exception is 3D geometries, where an increase in surface area due can outweigh the effect of the added material, and lead to a net increase in thermal transfer.

  This can lead to a paradoxical effect, where ADDING insulation around a pipe leads to HIGHER transfer than with less insulation material, because the added material increases the exterior diameter, and therefore surface area.

  (Heatsinks are also a good example. It is more material than just the component by itself, but increases surface area by such a massive amount that it more than outweighs the added material)

  source

  • UnfortunateShort@lemmy.world ⁨23⁩ ⁨hours⁩ ago

    Not only that, you add two changes in material on top (copper > glue > pan), which add even more resistance

    source
  • Simulation6@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

    You are not supposed to out gloves on infants, only mittens, because it makes their hands colder.

    source