Post #592896

Plugging it into this formula: projectrho.com/public_html/rocket/heatrad.php I get a circular radiator at least a kilometer wide, assuming the radiator is quite efficient, a rather modest datacenter, and very hot coolant (70C). …Realistically, the coolant temperature would need to be much lower, and dissipate much more, so the area gets very large real quick. I cannot emphasize how expensive a functional 2km+ radiator would be in space. It’s mind bogglingly expensive.