Double V Stirling Engine

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• stirling
• engine

[aross345]

You are correct; the V-15 would need pressurization to at least 10 bar, and lots more heat exchanger surface area, plus a regenerator, etc., to make 100 watts. See E.F. Clapham's article (1977, Model Engineer, 143, pp 852-856, Aug 5th, pp 908-912, Aug. 19); His 5cc entry in a model stirling engine competition produced 95 watts at 2000 rpm when pressurized with helium at 1200 psi! The second place machine, a very well made engine operating near atmospheric pressure, made about 5 watts. AR

[moffett8]

I saw another you tube channel that listed a V15 by Andy Ross. Do you have any info on this it seemed to work very well.

[aross345]

@moffett8

Some years ago I offered a casting kit for machinists for a V type stirling of the alpha type (called the V-15, as its displacement was 15cc). It was a nice little engine, but some builders found it difficult, so it was replaced with the yoke drive B-20 kit, which most people found easier to make. Both engines produced a modest power of about 10 or 12 watts, at atmospheric pressure. They are no longer available.

AR

[Zerginfantry]

How do you keep the pistons from scraping the cylinder walls?

[aross345]

@Zerginfantry

The piston skirts are cast iron, with very thin walls, to keep mass low. They operate in honed hard-coat anodized al. alloy cylinders, with the slightest bit of oil (rubbed off), and a close clearance fit (just under 0.001"). Both materials have a slight surface porosity, which retains a bit of oil. Relatively long con rods keep side loads small. It all makes for a good combination of low friction and excellent sealing.

AR

[aross345]

I agree with efahrenholz1's general conclusion to the extent that a stirling engined RC car would be a challenge, but not for the reason given. A simple dead volume speed controller (see the D-90 video clip) readily solves the power& speed control issue (there are other means, as well, but not as simple).

AR

[01hassall]

actual point?

[moffett8]

I saw a video on another channel and they suggested the V15 was producing 100 watts......By you comments I guess not. It did run at a very high speed and was probably the smoothest stirling running engine I seen run so far at that high of a speed.

Do you still sell kits or plans for a similar engine or bigger model?

Philip

[nazifdaniel]

can use this engine as induction sytem like turbo nad supercharge, attach it to ekzos pipe put blade like turbo or supercharge system into non turbo car...this can save a lot of petrol

[bcaindustries]

what is the bore and stroke of this engine?

[coasterpro]

I wonder how much energy you could recover using the waste heat from an internal combustion engine on a Stirling engine like this one to generate electricity driving an electric motor coupled to the drive shaft (as in the Honda Prius)? Anyone got an estimate?