In reply to  Axil Axil's message of Thu, 16 Nov 2017 15:54:21 -0500:
>The kilopower system runs at 800C at an efficiency of 38%. It delivers heat
>from the nuclear fuel via sodium heat pipes.
>Would it be possible to use refractory material in the construction of the
>engine to get its operating temperature up higher?

Possibly. At one point the Japanese(?) were designing/building a ceramic car
engine to run at higher temperatures. Not sure what became of that, but I
suspect it wasn't tough enough to handle a continuous stream of mechanical

Robin van Spaandonk

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