slightly off-topic, here is a non-electrical heat engine, possibly good for driving a stovetop fan.
On youtube there are many variations of stirling/ericsson engines, some are really works of art.
But definitely NOT free energy as claimed in the OP.
https://www.youtube.com/watch?v=4sV_0xKX4II
On youtube there are many variations of stirling/ericsson engines, some are really works of art.
But definitely NOT free energy as claimed in the OP.
https://www.youtube.com/watch?v=4sV_0xKX4II