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  • Stirling engine & solar furnace plans

    Discussion in 'The main mechanical design forum' started by stewlenox, Mar 1, 2010.

    1. stewlenox

      stewlenox Active Member

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      Hi all,
      I have a 2500 watt generator head, and a nine foot satellite dish. I've been looking at solar furnace driven Stirling engine driven generators, and I'm dying to build one! My question to the group is: Have any of you built a Stirling engine, and do you have drawings or plans? What were the sticky issues you encountered? Does anyone have a GOOD non-math oriented description of exactly how it works...IE timing, cooling etc.? If you haven't seen one of these things yet, check it out online...they're super cool!
      Here's one running on the reflection from a shaving/make-up mirror:
      http://video.google.com/videosearch?hl= ... v&start=10
      I want to see if I can run my 2500 watt head with one. It's normally run with a six or seven horsepower engine. Any help, or comments are welcome...Thanks!
       
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    3. maniacal_engineer

      maniacal_engineer Well-Known Member

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      at 9 ft diameter you have some 55 sq ft . the most insolation you will get is 1kw/m^2 or about 100w/ft^2.
      the best that anyone has ever gotten is 30% of that and you would be doing really well to get 10%. that means 560W or so - call it 2/3 hp. There is a german guy that sold plans for a 500w engine:
      http://www.uwemoch.de/
      and there is a guy last name steele that also sells plans, but I think his engine is only 100W or so
       
    4. stewlenox

      stewlenox Active Member

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      Thanks! I'll either scale up my dish, or scale down my generator accordingly...but what I really need are good stirling motor plans.
       
    5. zaki

      zaki Member

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      Hi Guys
      I designed and run a small sterling engine recently. But I don't have enough knowledge (specially mathematically).
      I will upload a video soon. What the main thing is to fabricate it is balance and frictionless. Your system must has minimum possible friction and maximum balance.
       
    6. zaki

      zaki Member

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      another very important thing is timing. There must be 12 and 3 o'clock different in both pistons.
       
    7. maniacal_engineer

      maniacal_engineer Well-Known Member

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      if you do a search on jim dandy # 6 you will find these
      http://www.starspin.com/stirlings/jimd6.html
      http://www.starspin.com/stirlings/pictures.html
      http://www.navitron.org.uk/forum/index.php?topic=1054.0
      this is the highest powered individually made engine that I know of. Its not really set up for solar. The Uwe Moch engine is more amenable to that type of modification.

      This site
      http://www.redrok.com/main.htm
      has everything on solar tracking and heliostats and concentrators that you would need
       

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