Rotary Displacer Stirling engine
Posted: Wed Sep 07, 2005 9:08 am
Hello All!
My son has a science fair coming up and we decided that a Stirling
engine would be a good project. We have looked at the various tin
can engine plans availabe on the web. First we looked at the very
simple unit that utilizes a balloon for a diaphram. Then we looked
at the Walking Leg Stirling made from a paint can. Finally we found
this: http://www.bekkoame.ne.jp/~khirata/english/rot_se.htm
We have built the cylinder from tin cans. We made the rotary
displacer from balsa wood. The power piston is an old used R/C plane
piston in a brass tube. Technically, we understand the principles
well enough. Mechanically, we need help finding or making the
crankshaft to attach to a 1/8" brass main shaft. Also, one thing
that isn't perfectly clear in this diagram is how do we set the power
piston 90 degrees from?? With the rotary displacer, the air gap or
free air area removed from the displacer is where the air/fluid would
reside. The power piston will rotate the displacer to move the air
to the cold side. So, my power piston is 90 degrees out from what?
#Tony
My son has a science fair coming up and we decided that a Stirling
engine would be a good project. We have looked at the various tin
can engine plans availabe on the web. First we looked at the very
simple unit that utilizes a balloon for a diaphram. Then we looked
at the Walking Leg Stirling made from a paint can. Finally we found
this: http://www.bekkoame.ne.jp/~khirata/english/rot_se.htm
We have built the cylinder from tin cans. We made the rotary
displacer from balsa wood. The power piston is an old used R/C plane
piston in a brass tube. Technically, we understand the principles
well enough. Mechanically, we need help finding or making the
crankshaft to attach to a 1/8" brass main shaft. Also, one thing
that isn't perfectly clear in this diagram is how do we set the power
piston 90 degrees from?? With the rotary displacer, the air gap or
free air area removed from the displacer is where the air/fluid would
reside. The power piston will rotate the displacer to move the air
to the cold side. So, my power piston is 90 degrees out from what?
#Tony