Stirling Engine: Difference between revisions
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I'd also be interested in finding a way to reduce the emissions by filtering the particulate out of the exhaust. A filter would be an easy way to do this, but I'd also be interested if it could be done with centrifugal separation or ionization. | I'd also be interested in finding a way to reduce the emissions by filtering the particulate out of the exhaust. A filter would be an easy way to do this, but I'd also be interested if it could be done with centrifugal separation or ionization. | ||
An [https://en.wikipedia.org/wiki/Stirling_engine#Configurations Alpha] configuration may work better. The entire hot section could be in the chimney of a rocket stove, for very high heat transfer. The cool section could be water cooled, far enough away from the heat. | An [https://en.wikipedia.org/wiki/Stirling_engine#Configurations Alpha] configuration may work better. The entire hot section could be in the chimney of a rocket stove, for very high heat transfer. The cool section could be water cooled, far enough away from the heat. On second thought, making the piston would be hard and the shaft would still be right in the heat. Better would be a heat exchange. And the Stirling engine could power the fan. Rocket stove could be smallish, probably use a metal trash can insulated with perlite. Use metal ducts for the inside. The Stirling engine chambers would be pretty easy, probably metal pipes. The piston end shouldn't get too hot, so a concrete piston should work just fine. | ||
[[Category:Projects]] | [[Category:Projects]] | ||
[[Category:Workshop]] | [[Category:Workshop]] | ||
Revision as of 17:52, 5 October 2015
Version 0.1
Design
Two beta style engines coupled together.
Piston
I want to use a piston instead of a diaphragm because it has a larger displacement, more displacement equals more power. I want to build my diaphragm using a steel wool core and some small pieces of metal (coat-hanger?) to reinforce it, pour concrete over that and seal the whole thing with silicon. This should allow me to make any shape I want while still getting a good smooth seal.
Notes
I saw a video using metal water bottles for the chamber - metal and already very smooth.
Combustion Heat Transfer
I would like to build a wood burning model and attempt to produce a very efficient heat transfer.
The cold portion will be water cooled. The pump is operated by the engine. The water reservoir will have a heat sink. A fan will pump air over the heat sink. That air (now slightly warmed) passes through a heat exchange with the exhaust. It is then forced in to the combustion chamber (wood burning). The exhaust from the combustion chamber is then forced back through the heat exchange, where most of the energy is reclaimed.
I'd also be interested in finding a way to reduce the emissions by filtering the particulate out of the exhaust. A filter would be an easy way to do this, but I'd also be interested if it could be done with centrifugal separation or ionization.
An Alpha configuration may work better. The entire hot section could be in the chimney of a rocket stove, for very high heat transfer. The cool section could be water cooled, far enough away from the heat. On second thought, making the piston would be hard and the shaft would still be right in the heat. Better would be a heat exchange. And the Stirling engine could power the fan. Rocket stove could be smallish, probably use a metal trash can insulated with perlite. Use metal ducts for the inside. The Stirling engine chambers would be pretty easy, probably metal pipes. The piston end shouldn't get too hot, so a concrete piston should work just fine.