Solid fuel IC engines

[pgk pgkParticipant @pgkpgk17461]

A link i found interesting

[pgk pgkParticipant @pgkpgk17461]

Not just coal dust but gunpowder, flour, sawdust etc..

**LINK**

[Brian GParticipant @briang]

Don't forget the lycopodium fueled Pyréolophore, a Napoleonic era internal combustion pop-pop boat.

Brian

[duncan webster 1Participant @duncanwebster1]

Or a coal fired Doodlebug

**LINK**

What the first link doesn't cover is coal fired gas turbines, on which a lot of sweat has been expended. What you do is replace the combustion chamber with a heat exchanger so that the hot gasses from the coal fire heat the pressurised air from the compressor. All very nice in theory, but ash deposits on the heat exchnger sounds like a bit of a problem to me. Challenge for the hot air engine men

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