Search found 8 matches

by Murph
Tue Mar 29, 2011 8:10 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Oddball theoretical question - ammonia absorption
Replies: 14
Views: 19414

Re: Oddball theoretical question - ammonia absorption

Why use an ammonia absorbtion cooler to run a Stirling engine, when you can just use a gas expansion engine, e.g. "steam engine", in place of the gas expansion valve in the cooler line?
by Murph
Mon Oct 11, 2010 7:10 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sanity check: airtight displacer a bad idea?
Replies: 3
Views: 6657

Re: Sanity check: airtight displacer a bad idea?

Venting isn't an issue, if you feel you should vent it, go ahead.

There have been more than one Stirling engine made with a wire mesh spool or stacks of wire mesh washers being used as a displacer piston, that should answer your question in itself.ph

Murph
by Murph
Sun Aug 22, 2010 9:11 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling Engine Thesis
Replies: 4
Views: 6592

Re: Stirling Engine Thesis

Yes, the Phillips Stirling engine was pressurized, had its own pump built in. No thesis on Stirling engines is worth dick if you aren't referencing from "Stirling Engine Design Manual, 2nd Ed." by William Martini. There are copies in PDF format on the web, free, as the book was commissione...
by Murph
Sun Aug 22, 2010 9:05 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Heat exchanger design
Replies: 1
Views: 3354

Re: Heat exchanger design

Start by getting a copy of "Stirling Engine Design Manual, 2nd Ed." by William Martini. This is available on the net free, NASA was the agency that commissioned the book.

IIRC, Allan Organ has a book referencing regenerators that is floating about on the web in PDF format

Good luck, Murph
by Murph
Sun Jul 18, 2010 4:49 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Building a Solar powered Stirling engine - Where to start?
Replies: 8
Views: 7376

Re: Building a Solar powered Stirling engine - Where to start?

Martin Wyss had a rather nice unit using a automotive CV boot as the piston, rather ingenious!

http://www.alice-dsl.net/bsuhrbier3/

Murph
by Murph
Fri Jul 09, 2010 7:20 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Something I would Love to see
Replies: 4
Views: 4458

Re: Something I would Love to see

You would have to use Schlieren photography to see the gas flow inside the engine. http://en.wikipedia.org/wiki/Schlieren_photography Anything that you can see, chalk, smoke, whatever--would act as an abrasive and impede the engine's gas flow and operation, and would settle out when the engine was n...
by Murph
Fri Jul 09, 2010 7:36 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling Engines of Daniel Lyonett
Replies: 1
Views: 7572

Re: Stirling Engines of Daniel Lyonett

Nice website, and nice plans for his ASAP engine, except for one problem: there is no dimention for the crank throw as best as I can see.

Murph
by Murph
Fri Jul 02, 2010 9:41 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: liquid piston stirling engine
Replies: 1
Views: 3905

Re: liquid piston stirling engine

There is quite a bit out there if you have the time to spend.

Send me an E-mail at AMurph109@gmail.com, and I'll sendover a ZIP fileof what I've collected to date.

Murph