Pulsogenerator Pulsogénérateur 36leds stirling engine

[electrique527]

To measure shaft power, you need to put a load on the engine, and measure force and movement.

Its not possible to do this directly because the direction of the movement is not the same over the stroke, and also not constant. Same goes for the force. So you need to integrate it over time, or over one stroke. Possible best to do this with a scope and determine the area dF * dS (momentary force * momentary movement), if you use the scope in X-Y mode and one measurement per channel.

[lecorfec]

You are right! but it is not so easy to reach "F".

The right way would be to use a calorimetre and a "stirrer" directly linked to the piston!

thnaks for your comments!

[electrique527]

To measure the mechanical power, you need to measure the pressure inside the engine, and the position of the piston at the same time. From this, you create a p-V diagram, from the diagram you can calculate mechanical power.

In english this is called "indicated power".

You would need a pressure sensor, and a position sensor.

See the video: watch?v=dvomod6SsA0

[lecorfec]

I wish I could reach this kind of sensor and data logger but it is not the case for the moment!

[lecorfec]

The coil is a "Lucifer" swiss made actuator for magnetic hydraulic gate

It is designed for 220V 50Hz 5 W and has an interne resistance of 500 ohm . I believe that it is a bit to much to challenge for the right "generator"

Thanks

[electrique527]

Cool cool cool! This is really harder to get right than most people think!

Congratulations!

[alecorfec]

Congratulations...from your little sister!

[SWINGREGORY]

very cool

[mowerofdoom]

Very nice. A job well done.

A thought....

I have seen some arrangements where pole pieces on the magnets are arranged NN and SS to 'sqeeze' the field into dense narrow radial 'discs' which may be of some interest. (search for wave power linear generators)

Are you planning on measuring power at all? Any thoughts on the next stages of design? Oh, and have you tried short circuiting yet?

Again, great work. Looking forward to the next video (no pressure!!!)

Kind regards,

Geoff.

[lecorfec]

I was not aware of this arrangement. It is really interesting! I guess it is even more difficult, at least for me, to "feel" the variation of the magnetic field in this case!

I will try to reach the power with a rectifier (schootky diodes). hope there will be only marginal losses.

Thanks for your contribution

[mjdevink]

Really Brilliant! Lecorfec sets the new "Best in Glass" standard for performance from resonant thermoacoustic stirling engines!

Really impressed. Cheers -Mike

[desiredusername]

Wow.