Help with Displacer

[matador]

I need some suggestions on what to use as my displacer that is lighter than a tin can and about that size. A soda can is too small and I dont really want to use steel wool.

stirling2.JPG (112.9 KiB) Viewed 8404 times

This will be my second stirling build. I have the pressure vessel about done. I had planned on using a tin can to make a displacer with. Now that I have made the Displacer I think it may be too heavy. It fits in the pressure vessel quite nicely but I'd like to find something lighter.

[jimlarsen]

I have always thought that High Temp Closed Cell Silicone foam would be interesting to try as a displacer.

http://www.stockwell.com/pages/materials_sponge.php

It should be able to handle the temperatures, and the closed cell foam won't add dead space.

[Doogle]

Aluminium foil?

[speedless]

Hi
Try Oasis.
See:http://s280.photobucket.com/albums/kk18 ... /Stirling/
Jan

[msb]

Hi
You can use balsa wood for your displaser.
Balsa wood is a very light type wood that you can buy it from model plane stores.

[Alibaba]

You can use a big piece of aluminum and build with it a displacer, designing a cylinder and cut it with epoxi, a lot of people did that with the sfa stirling engine having very good results.


http://staff.argyll.epsb.ca/jreed/math8 ... er_net.gif