Comments by "John Burns" (@johnburns4017) on "The Mechanical Battery is Making a Comeback" video.

  1. The Stirling engine has always been just around the corner, but never came. It has reciprocating pistons so cannot be highly efficient. I did read a rotary version was made in some R&D. That would be a great advance. For automotive use it is too big and heavy. Great for a hybrid in a large vehicle like a truck, bus, train or ship. It actually powers submarines. The Stirling is limited to niche applications. But worth a vid on it.
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