Reply To: Mind, Spirit, Science connection?

[Henning]

redsnapper wrote: I thought cramming 1200m^2 of fin area into a two-car-garage model seemed a bit of a stretch.

That two-car-garage number didn’t include any heat exchangers, I think. Not even a turbine and generator. And I don’t know whether that’s included in the 300000 USD / 5 MWe calculation. Those numbers were only for direct conversion (I believe). But Rematog made it clear, that a conventional steam-cycle is still required.

If you do calculations, probably also include Helium as main heat conductor. It makes it invisible to x-rays (because of low Z – only two protons), as water shades the hard x-rays (8 protons in oxygen). We want the energy mainly in the photovoltaics, not just as heat. It gets heat anyway.

There are some discussions about helium as coolant in the forum.