Added: 2 years ago
From: Nissearne12
Views: 24,056
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  • *****

  • Look at a simple and improver design solution at youtube channel:

    42Jobe

    "Glass stirling pump improved displacer + regenerator"

  • This looks very interesting, I'd like to build one to mix/aerate the water in my spring fed pond which is warm at the surface but quite cold just a few inches deep. With that in mind, I have a couple of quick questions:

    1. Is the pump self starting? In other words, if I left it in my pond overnight would it start by itself when warmed by the sun the next day?

    2. I don't understand what "pops" the displacer piston out of the water to the top of the air chamber.

    Thanks for any help,

    Bill

  • @owegobill 1. Self starting or not depends on several things: displacer must float easy in middle stage with minimal friction, you need absoult no air leakage (above water surface line), then the displacer act very instable in middle stage when temperature differance is suficient. You need to add a sufficient float. 2. the diameter of the displacer rod pick up a force from the pressure differances between inside and outside the chamber, this force drive the displacer up and down.

  • @Nissearne12 Thanks for getting back to me, that clears up the one thing that was confusing me. I built a small soupcan sized pump over the weekend which worked great! Now on to the full sized version.

  • @Nissearne12 Thanks for answering my questions, that clears up the last thing that was confusing me. I built a soupcan sized model over the weekend and it worked great! Now on to the full sized version.

  • @owegobill

    I am happy to see your first simple pump you have made on your youtube channel :-)

  • wow thanks this helped me make a model to test in my tub ..so i can later finish my artificial river i made in my back yard.

  • Excellent. I must try to make a small scale demo-model to show my friends.

    Thank You.

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