" Stirling Low Temperature Difference Engines "

more info : http://stirling.devink.net


LTD engine no1 (Low Temperature Difference Engine)

This engine is made from the design of Rudy Mémin. It is based on the engine which was made for The Palace of Discoveries in Paris.
The engine has run on the warmth of the human hand, but it runs much better with the regenerator. So my advice is to put a regenerator in the displacer.

For making the holes I used two different hollow punches. The biggest punch was used for the Scotch Brite, ± 32 mm. The smaller punch was used to make the hole in the displacer, ± 30 mm. To obtain a perfect hole in the displacer this should be done very carefully by hand with a light rotating movement.

With LTD 1 I glued the Scotch Brite sponges with white wood glue. However, by making the regenerator sponge a tiny bit larger than the hole in the discharger it sticks without glue.


LTD engine nr 3

This is a self-starting Ringbom engine which runs on only a small difference in temperature between the two plates. With this engine it is very important to stabilize the temperature because these engines are very sensitive to pressure differences.

When the pressure difference is too big the engine will run in an unstable condition until the pressure in the displacer cylinder has dropped and the discharger can function normally.

The technical data of this engine:
Cooling plate: diameter 220 mm; thickness 5 mm; material: aluminum.
Heat exchanger: diameter 220 mm; thickness of the flange 5 mm; discharger (centre part) 2.5 mm; material: aluminum.
Displacer cylinder: outside diameter 200 mm; inside diameter 192 mm; height of the ring 26 mm; material Plexiglas.
Displacer: diameter 191 mm; height of the discharger 12 mm; material: green insulating foam plastic board, brand STYRODUR by BASF.
Regenerator: 6 holes, diameter 30 mm, shifted 60 degrees in relation to each other in the discharger, filled with sponges of Scotch Brite.
Power piston: diameter 22 mm; piston height 22 mm; stroke adjustable between 12 and 30 mm; material: graphite.
Power cylinder: inside diameter 22 mm; outside diameter 25 mm; length 55 mm; material: brass.
Displacer piston: diameter 16 mm; height 22 mm; material: graphite.
Displacer cylinder: inside diameter 16 mm; outside diameter 18 mm; length 50 mm; material: stainless steel.
Flywheel: diameter 185 mm; thickness 4 mm; material: Plexiglas.

Category:

Science & Technology

Tags:

• stirling
• ltd
• ringbom
• modelbouw
• heteluchtmotor
• hot
• air
• engine
• Low
• Temperature
• Difference
• Engines

[buk1962]

great...!!!!...

[xXning3nXx]

@DadHav The video is of them running.

[AB88]

I HATE THAT SO MUCH

[brooke959]

19 years old and was wondering if could buy one of your engines

[eatspaste]

Beautiful craftsmanship, very nice.

I don't really get the music and background choice though.

rev. stirling was scottish. I'd like to see it with a tartan, and some bagpipes playing, that would be more apt.

cheers.

[ThusSpakeHistory]

excellent work !

[SWINGREGORY]

mdevink always the best....

[latheworks]

Top notch as usual! Very nice workmanship, yes indeed!

[mjdevink]

Jos you should be nominated for a Nobel prize for furthering the worlds understanding of stirling engines!

Very Creative music too, thanks Sjoukje.

Your videos are always fantastic. - Mike

[gptau]

bonjour,

+1 as usual...!