4 ms·
> Unless a magic future technology turns Earth into a heat pump which can push heat back into the Sun You mean like those panels[0] which radiate heat in speci
by yetihehe 3y ago
> Unless a magic future technology turns Earth into a heat pump which can push heat back into the Sun
You mean like those panels[0] which radiate heat in specific infrared band in which atmosphere is transparent? We don't need to push energy into the sun, just out of atmosphere into the coldness of space.
[0] https://www.skycoolsystems.com/radiative-cooling-case-study-2/ https://www.skycoolsystems.com/radiative-cooling-case-study-...
- baq 3y agoNice tech but 500w/m2 is… not too much in the limit. If you operate a few thousand multiple dozen TW fusion plants, these won’t matter much unless you plaster Sahara with them. Maybe.
- yetihehe 3y agoIt's only a start, there may be better technologies when we actuallu do have TW-scale fusion plants. Like TW-scale heat pumps using nanopatterned laser emitters to get rid of the heat at super high temperatures (remember, that energy emitted is temperature^4 [0]). There already are technologies for this, but we don't need them yet. [0] https://en.wikipedia.org/wiki/Stefan%E2%80%93Boltzmann_law https://en.wikipedia.org/wiki/Stefan%E2%80%93Boltzmann_law