Simple question that can be reworded as such: if I use a fire piston continuously, without anything in the piston. Will the continuous pushing and opening of the piston create net heat or will the decompression part, cool the gas inside the piston chamber exactly by the same amount as the compression heated it up.
I ask because I am looking for a way to turn kinetic energy into heat energy. I want to simply run a fire piston so it generates heat, without any fuel in it. Is this possible?
Thank you for your answer.