Balthazar 1 Stirling Engine self cooling

This shows Balthazar 1 running at top speed and pumping away its own coolant that is passed through a radiator to help maintain the top half of the displacer chamber temperature down.All bits and pieces are constructed without the use of a lathe and mostly from easy-to-find hardware.The power source is a simple homemade spirit lamp using meths.The water used is distilled to reduce residues and all the water circuitry is made from non-ferrous materials.

Category:

Science & Technology

Tags:

• Stirling engine
• water cooled
• pump
• Balthazar 1
• home-made

[cellman64]

friend it is reaaly very good. how did you make power piston? I want to make like that,if you explain.

[orsiswed]

@cellman64

I made the piston chamber from a brass cylinder section to which I welded a nozzle at the bottom. The piston itself is made from a two-part composite putty called Plubmer's-Mait.This stuff is easy to mold but after 5 minutes sets hard.

To make the piston, just knead some of the putty with your fingers and stuff it in a small section of tube,the same diameter as the cylinder.Push it out after 4 minutes otherwise it will stick there forever:) It can be polished when set.

[hugohugo37]

Now if you removed the heat source and forced the thing to spin with a motor will it cool the water? I think that's true. Have you tried that? I'd be interested to know how cool you can get the water by running it at various speeds.

[orsiswed]

Yes, I think in theory that should work but I very much doubt that the cooling effect would be anywhere near of a "usable" degree and the heat generated by whatever device e.g. electric motor is being used to turn the flywheel would to a large extent annul the net temperature fall. Of course one would need to experiment to be sure and one can envisage a system using say a wind turbine driving the engine "backwards" to produce a cooling effect.

[orsiswed]

I have no plans but I can send you the photos of the individual parts of the pump so you can make one yourself with the material you have at hand. It's a very simple pump and quite easy to make. The piston (I tried several materials,because I do not have a lathe) is made of quick set (two part) putty used for plumbing leaks of the type called "Plumber's Mait" It has to be fairly loosely fitting.Friction kills this machine.Please send me your email address

so I can post you the photos

[ibercaracole]

Genial !

[orsiswed]

Thanks. I meant to write it up sometime. I have all the photos but I am a bit lazy when it comes to writing :)

[cellman64]

@orsiswed thank you very much friend.

[vergaranunes]

Muito bom!!

[technology49]

Please can you sent me the plans from the pump?