Stirling engine boat.

V twin Alpha type Stirling engine powered outboard running at Bruny Island, Tasmania, Australia 2006.
160cc total displacement, unpressurised air working fluid, V twin for good balance. Two, twin cylinder, Alpha type stirling engines mounted at 90 degrees to each other and sharing the same crankshaft. 180W @ 1800rpm,
fuel consumption: 300g LPG/h, speed: 2 knots on a 12-foot dinghy, total outboard mass 16kg. Start up fron cold, 1.5 minutes, Total running time to date 200 hours. ( Aug 2009)

Category:

Autos & Vehicles

Tags:

• Stirling
• engine
• Outboard
• Motor
• Boat

[TarPaprShack]

Seems to make a lot of noise for a stirling.

[ismokewead420]

hey look, its one of those "free energy" stirling engines, oh wait IT RUNS ON PROPANE!

[boldziga]

@TarPaprShack see the gas tank?

[lakewood85]

Noisy as hell.

[mptrax]

too noisy for a twin cylinder strirling engine and turns too fast... !!!

[tasstir]

@Aviator168 The efficiency is 4% overall, gas in to power out. The heaters are folded and so can not cope with pressurization. Having aquired some design tools, I hope to modify and improve it.

[Aviator168]

Trying to figure out the efficiency of the engine. Have you try to measure it? Also, wondering how much power it can deliver if the engine is charged with helium to 20 atmospheric pressure. This is great work. One of working alphas I haven't seen for a long time.

[tasstir]

@Aviator168 It is filled with air at atmospheric pressure. The power is 180 watts at 2000 revs. Free speed, 2900 revs. The burners consume 300 grams of LPG / hour total. Mounted on the 12 foot alu dingy with 4 people, speed is 2 knots. There are two seperaye engines mounted at 90 degrees two each other, sharing the same crankshaft for good balance. The first measured power of one engine only was 7 watts.  Many mods over 4 years gave180 w from 320 cc .

[Aviator168]

Is it filled with air, hydrogen or helium?

If it is pressurized, what is the PSI?

Have you ever measure the power output?

[fhuha]

Looks like a pneumatic engine. What the gas tank at the left is for?

[KenMacMillan]

Thanks