In reply to  Axil Axil's message of Thu, 16 Nov 2017 15:54:21 -0500:
Hi,
[snip]
>The kilopower system runs at 800C at an efficiency of 38%. It delivers heat
>from the nuclear fuel via sodium heat pipes.
>
>permalink.lanl.gov/object/tr?what=info:lanl-repo/lareport/LA-UR-17-21903
>
>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
shocks.
[snip]
Regards,

Robin van Spaandonk

http://rvanspaa.freehostia.com/project.html

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