Stirlingengineforum.com

Well, I do very much appreciate your input. It's a pleasure. The purpose of a heat engine is to convert heat into work. The more effectively it can do that, the less waste heat there is left over to cause the engine to overheat. Is That a fact. I was thinking of asking you to publish some pictures ...

You might find this paper interesting: http://www.cd3wd.com/cd3wd_40/VITA/STIRLING/EN/STIRLING.HTM The "plans" or illustrations and such are not very detailed but it discusses work that was done building Stirling engines for developing countries out of locally available material like old m...

Tom I'm sorry to say, I don't think I can add anything more to your Thread, as I was under the impression your proposal was applicable to the Stirling Cycle engine as invisaged by Cayley and subsequently patented by The Rev R Stirling in the early 18 hundreds. Clearly you are working on something m...

Tom I'm sorry to say I've obviously not explained myself clearly, my point was simply to say, you appear to be working on a solution, where no problem exists. The regenerator is primarily a device to improve the thermal efficiency by storing heat that would otherwise have to be rejected by the cool...

Tom Let me start by saying, the main problem with the Internet is, unverified information. Firstly, your extract from Wikipedia implies that efficiency and power output are linked, this IMHO is a false assumption,... Point taken. Though I don't see much point in debating the accuracy of wikipedia h...

Tom, It's stents, not stints, and they are expanded by passing them up an artery on the end of a tube, the tube has a small balloon that is inside the stent and when the right place is reachedthe balloon is expanded and the metal mesh of the stent expands against the artery wall, the tube, and ball...

... if you could some how design it to expand in only one direction, up and down and not sideways . You don't need the displacer grabbing the cylinder walls or shrinking so much too much working fluid runs around it. There are all kinds of different arrangements so it is sometimes difficult to spea...

Another possibility might be to use some kind of bimetal spring type material which would expand when heated, if something in this category could be found which would respond quickly enough.

he primary effect of regeneration in a Stirling engine is to increase the thermal efficiency by 'recycling' internal heat .... In practice this additional power may not be fully realized as the additional "dead space" ...reduces the potential efficiency gains from regeneration. http://en....

I think the problem, as far as building a medium power Stirling is that it is much more costly in terms of R&D. A hobbyist can build a small model relatively inexpensively but to tool up to build a real engine that produces usable power would take some capital. Since a Stirling engine is probabl...

I've been thinking lately that the critical element in this type of heat engine is not so much the volume of the chambers but rather the relationship between heat delivery to the engine and heat utilization by the engine. To a great extent this would manifest as a ratio between the sizes of the heat...

Well, I found this:

[youtube]http://www.youtube.com/watch?v=ARD3ctp80ac[/youtube]

A wet piece of paper. Close enough.

Oh you can do better than water, and I'd use something with a higher evaporation rate to start with, say a 50/50 mix of water and alcohol, with a fairly stiff sponge that wicks well. Maybe concentrate light on the hot side via a simple magnifying glass. You might be able to pull it off with just wa...

derwood, I am very interested in your project as I think the Lamina Flow engine is one of the most interesting of the Stirling Engines due to its simplicity. Also the fact that you have one running without the Steel Wool regenerator, which I assumed was an essential aspect of this type of engine. I ...

Question: Could an LTD type Stirling engine be made to run on evaporative cooling ? I was thinking that it would be possible to simply place a large sponge in a pan of water and set an LTD engine on the sponge to test the idea. It might help to cut some groves or channels in the sponge to increase t...