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Closed chamber Stirling engine generator.

Started by Groundloop, February 29, 2008, 07:04:12 AM

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AhuraMazda

#5
February 29, 2008, 11:48:17 AM
The guy in this video demonstrated an engine like the one you talk about. I am not sure if this is that specific video.

http://youtube.com/watch?v=ofsxZfu9rW0&feature=related

AM

Groundloop

#6
February 29, 2008, 11:53:56 AM
@tinu,

I did put a big smile in there, did I not?  ;D I'm terrible at math. Are you able to compute
approx. how much energy we can get from a temperature difference created from a 1 sq. meter
parabolic disc focused on the hot side of a Striling engine? What I mean, how big must the motor be to
get approx. 300 Watt from the sun? How big is a 1/2 horse power Stirling engine?

One advantage I see with my idea is the closed one piston engine. No need to use any complicated seals etc.
The piston can be made of very light material so the only weight will be the axle and magnet.

Groundloop.

Groundloop

#7
February 29, 2008, 11:58:33 AM
@AhuraMazda,

No, the video you posted is not related.

This video is.
http://youtube.com/watch?v=3O1xacAu4jA

My big difference is to get rid of the loss by not using flywheels.
Also since the engine is closed there is no need for exspensive and difficult seals etc.

Groundloop.

Gearhead

#8
February 29, 2008, 12:16:07 PM
In the 1970's there was a closed, sealed, free piston stirling engine with a parabolic mirror being offered for sale in Popular Science Magazine that was claimed to be able to produce 100 watts.  I remember the story about how they kept experimenting with different weights of pistons until they got a resonant system that worked.

Groundloop

#9
February 29, 2008, 12:30:42 PM
@Gearhead,

Thank you for the information. Do you remember where or who? Maybe a web link?

I have decided to try out my idea, making a prototype. I will use a 46 cm parabolic mirror.
I will also use water cooling on the "cold" part of the engine. The maximum temperature
with a small parabola like that will be 400 - 600 degrees Centigrade on the warm side of
the motor. Depending on how much help I will get on this forum my project will take from
some few weeks to a year to complete. I have computed the total cost of this project
to be approx. 4500,- NOK. (865USD). My goal is to beet the output of a solar panel of
equal area as a 46cm parabola.

Groundloop.
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