h a l f b a k e r yAsk your doctor if the Halfbakery is right for you.
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Instead of a piston, use two vertical thin long pipes filled
with
water, with a float on them. the pipes are cooled.
The steam first pushes the water up the pipes, but then
condenses, never reaching the top, and the weight of
the
water along with the atmospheric pressure pushing the
"piston"
back.
As long as the steam doesn't leave the system, you have
something between a Stirling and Rankine.
Of course this is no LTD (Low Temperature Diff) engine.
You
need heat over 100C.
Something like this
http://scitoys.com/.../thermo/thermo.html
But using the power drive as piston and not as "jet" [pashute, Feb 27 2011]
Magnetic clutch
http://www.youtube....watch?v=xFb0H3FZyWk
In the water piston it would be a linear clutch... [pashute, Feb 27 2011]
Liquid Piston Stirling Engine
http://www.engin.sw...rts/FK_AO_Final.pdf
skip all the pesky maths and look at the pictures [afinehowdoyoudo, Mar 02 2011]
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Annotation:
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Hmm, wouldn't the steam just bubble up past the water? |
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alternatively, keep the pistons, run it closed cycle at about 0.1 bar... |
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I'm not giving you any more fishbones, I'm sure it's making you richer in some obscure way...so I have to bun everything from now on. |
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Hmm, your right. So the pipes have to face
downwards and then siphon upwards. But that's still
very simple to do. |
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Benefits: Low cost, extremely simple to make. |
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A mixture of hydraulics and pneumatics
understanding would be needed to give the pipes
the best shape for the best efficiency. |
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Would the energy be extracted mechanically or electrically ? |
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I don't get why a float system would be deemed more viable than a piston. |
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Just because its so much easier and less costly to
make. And replacement of parts is simply refilling the
pipe. |
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I suppose mechanic extraction would be a better way
-
otherwise you would have to build a special
generator from linear magnetic movement. |
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Isn't this the same as Hero's steam engine for opening and closing temple doors? I've seen Hero's engine described either with floats as you suggest, or using the mass of water in the cylinder to pull on the cylinder itself. |
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Instead of water filled pipes, fill them with oil. Steam bubbles in the comlum would also displace the top upwards. As the steam condensed on the way up the lioquid water would descend back to the bottom of the oil column. |
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Other benefit: no moving parts, no friction. |
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The last time I had any lioquid in my comlum an
urgent trip to the looloo was needed. |
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//Hmm, your right. //
What? Damn! Shattered my unbroken record of 100% inaccuracy for this decade already... |
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//The last time I had any lioquid in my comlum//
That's just crossover from a HB site in a parallel universe where it's a very common complaint. |
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Reminds me of a liquid-piston stirling engine (link). I like it. |
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