3 ms·
"Over the years, the heat from the trains soaked into the clay to the point where it can no longer absorb any more heat. Tunnels that were a mere 14 degrees Cel
by spenrose 4y ago
"Over the years, the heat from the trains soaked into the clay to the point where it can no longer absorb any more heat. Tunnels that were a mere 14 degrees Celsius in the 1900s can now have air temperatures as high as 30 degrees Celsius on parts of the tube network."
- bombcar 4y agoSimilar issues can happen with geothermal heating/cooling if it's unbalanced - eventually the ground temperature changes and you have to dig deeper or stop using it.
- SoftTalker 4y agoI wondered about that. I know a few people with GT systems and it has never been an issue, perhaps because we have real summer and winter here, so the heat dumped underground in the summer would be offset by the heat extracted in the winter?