Comment on Turbine go brrrr
Tlaloc_Temporal@lemmy.ca 5 days agoUnfortunately, there’s no way to get energy out of waste heat that won’t be spent pushing that heat a little harder. Already a significant amount of energy is spent cooling data centers, any attempts at energy recapture will just make that cooling harder.
The best we can do is something like district heating, because heat pumps can get over 100% effective efficiency.
Monument@lemmy.sdf.org 4 days ago
The energy needed for phase change for supercritical CO2 is substantially lower than steam.
There’s more wiggle room. My understanding is that similar to heat pumps, they can build systems with different optimal temperatures, and even daisy chain them together. They’ll never make a perpetual motion machine, but they can waste less energy.
Tlaloc_Temporal@lemmy.ca 3 days ago
True, we can optimize the cycles more. Like double expansion piston engines, or that crazy proposal for a hydrid steam-mercury super high pressure power plant.