Re:Pretty Good House
by tlb on Tuesday January 17, 2023 @09:27AM
(#34412721)
Yes, I don't think they're strongly related in a solid.
But in a gas, heat transfer is mostly driven by convection. Gas near the hot surface heats up, rises, moves to the cold surface, falls, and repeats. So what matters is the specific heat capacity * the flow rate between hot and cold surfaces.
Re:Pretty Good House
by bloak on Tuesday January 17, 2023 @11:47AM
(#34414819)
Thanks for that explanation. So the "thermal conductivities" I quoted above, if they don't take account of convection, are perhaps not even particularly relevant. The advantage of argon over nitrogen might be greater than those numbers suggest?
But in a gas, heat transfer is mostly driven by convection. Gas near the hot surface heats up, rises, moves to the cold surface, falls, and repeats. So what matters is the specific heat capacity * the flow rate between hot and cold surfaces.