Elaborate?
Comment on Can enough solar pannels decrease the global temps?
vane@lemmy.world 1 year ago
Conservation of energy equation says otherwise.
morphballganon@lemmy.world 1 year ago
noli@lemmy.zip 1 year ago
The assumption here is that solar panels make sure that the energy from the sun gets turned into electricity instead of heat. However, pretty much everything that uses electricity is technically a 100% efficient electrical space heater (eg. A fan turns electricity into heat and kinetic energy… which dissipates into heat). So the only way that solar panels could have a cooling effect is if we didn’t use the electricity (someone smarter than me will probably be able to point out exceptions to this, but still this should be the case for the majority of uses).
Also, since solar panels are intended to capture as much solar energy as possible (hence why they are typically black), the realistic effect of covering the planet with them would probably be a temperature increase
vane@lemmy.world 1 year ago
The sum of consumed energy will stay the same, so will be the heat generated by consumption. The only way to efectively decrease temperature is to reduce consumption. www.zo.utexas.edu/courses/…/Global-Warming.htm
finitebanjo@lemmy.world 1 year ago
The nuance here is that the user probably means cooling the earth’s atmosphere, not the earth as a whole enclosed system.