2 ms·
Again, dirt isn't very insulative. It has a high thermal storage capacity, but if you pumped heat into it, it would dissipate to all compass directions and down
by IAmBroom 1y ago
Again, dirt isn't very insulative. It has a high thermal storage capacity, but if you pumped heat into it, it would dissipate to all compass directions and downwards, and you couldn't retrieve it later.
If that wasn't true, you'd need to keep moving the underground passageways of buried passive cooling systems.
- pfdietz 1y ago> dirt isn't very insulative Whether it is sufficiently insulative depends on the scale of the system. The thermal time constant of a 3D mass is proportional to (thermal conductivity)^-1 (heat capacity per volume) (radius)^2. So if the thermal conductivity is too high, just increase the size.