#4 Stirling 2 Components

First peak at Stirling Two (S2) Engine Components.
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Science & Technology

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• Pulse
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[insAneTunA]

Awesome again !! :-)

5* and greets from the Netherlands, iT

[PulseFuelNerd]

Thanks Again iT, PFN

[bluanvil1]

Wouldn't liquid cooling be much more efficient for cooling the gas in the motor? If the focal point of the dish moves over just a little it will focus on your cooling section of your cylinder. and your efficiency will drop considerably!

[PulseFuelNerd]

Passive cooling = bulletproof.

The engine is reverse mounted in the dish. The cool side is behind, in the shade!

[marcos13af]

The cylinder Must be sealed at both ends...to create Pressure and Vacuum...

[tungstenfusion]

pretty little thing- :)>

[chipmaker2]

@renderrob What if he were to anodize the piston?

[futurehipay]

Meh. Im in the computer lab and cant hear the video but Im guessing say 5atm, air, a 50cc space, and a hot cold to be 400 and 50 respectively. Your looking at about 1000rpm's and around 30 watts. I would assume my guestimates to be close to your numbers, and the temp difference may even be pushing it. I wouldn't get my hopes up to high for kilowatts : (

[renderrob]

Your copper should transfer plenty of heat to your aluminum section, completely bypassing the gas inside (unless you use an insulating spacer).

An aluminum piston in an aluminum cylinder will not work, the surfaces will become scored. The reason aluminum works in ICE's is because they use motor oil. You can't use oil in a stirling.

Learn from jerry-howell - com slash Menu-1 - html, and also Pistons - html.

This is why we have engineers. Maybe you can put graphite around your piston.

[blg53]

Air under atmospheric pressue just does not compress/expands enough to achieve the power output you desire, no matter what the input (temperature difference) is. Also as Barumman mentioned the waste heat if measured in kilowatts it mot going to be dissipated by passive conduction/radiation. Same as domestic heaters of similar power it would glow red hot.

[blg53]

Did I hear you correctly with a claim of "a few kilowatt" ? Pardon me my friend, I like your project, but this is an absolute dreamland as it would definitely be in violation of Carnot laws. I would guess you will be lucky to get 20W with this sizing. To get 200W and higher you would need either a hot air engine the size of a small house or use a high heat-conductivity gas (eg pressurised Helium).