> Use nuclear magic to make the hot side, cool with ambient temperature.
If you use ambient temperature for cooling, you are severely limited in your total power output. Like, we're talking about less than a megawatt output (depending on how big the ambient heat dispensers are) compared to the ~1GW of a regular old nuclear plant.
You might say: that's fine, let's just build many small ones. But you still need to track your radioactive material, make sure it's not stolen etc., which is a lot of overhead per installation.
If you use ambient temperature for cooling, you are severely limited in your total power output. Like, we're talking about less than a megawatt output (depending on how big the ambient heat dispensers are) compared to the ~1GW of a regular old nuclear plant.
You might say: that's fine, let's just build many small ones. But you still need to track your radioactive material, make sure it's not stolen etc., which is a lot of overhead per installation.