Kirk, My understanding of thermodynamics is not at a level that would allow me to independently evaluate the potential efficiency of an engine given its design and running characteristics. According to the following website, Melvin Vaux apparently improved Bourke's design and patented his own engine in the 1990's. Sounds interesting.
http://www.constant-pressure.com/News.htm Eric Message: 7 Date: Tue, 30 Apr 2002 10:05:11 -0600 From: "kirk" <[EMAIL PROTECTED]> Subject: RE: Re: [OT] vortex tube and stirling engine Eric, I read the 3 archives and what I previously said still stands. The thermal efficiency of a diesel far exceeds a stirling. The only time I would choose a stir;ing over a diesel is if my fuel were wood, coal, biomass or solar. None of those are useable in an internal combustion engine. Diesels run 15 to 25 to 1 compression. The ones 20 or higher get excellent economy. The Bourke was 50 to 1 and you could put your hand on the exhaust according to a pamphlet published by the Experimental Aircraft Assosciation. Kirk -----Original Message----- From: Eric Schaetzle [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 30, 2002 3:55 AM To: biofuel@yahoogroups.com Subject: [biofuel] Re: [OT] vortex tube and stirling engine Stirling engine's claim to fame? See the archived messages below. http://archive.nnytech.net/index.php?view=9970&list=BIOFUEL http://archive.nnytech.net/index.php?view=6853&list=BIOFUEL http://archive.nnytech.net/index.php?view=715&list=BIOFUEL Eric Message: 9 Date: Mon, 29 Apr 2002 10:22:07 -0600 From: "kirk" <[EMAIL PROTECTED]> Subject: RE: Re: [OT] vortex tube and stirling engine Thermal efficiency of a prime mover is a function of the delta T the engine operates over and is implemented in any engine using pressure change by a ratio of volume called compression ratio. That is why the diesel is the king and if the Bourke was available it would hold the crown. I think the stirling's claim to fame is solar or solid fuel. If you have a fuel that can be internally combusted efficiency says use a diesel. Kirk -----Original Message----- From: Manolo Rolan [mailto:[EMAIL PROTECTED] Sent: Monday, April 29, 2002 1:49 AM To: biofuel@yahoogroups.com Subject: RE: [biofuel] Re: [OT] vortex tube and stirling engine i'll keep thinking ... i'm trying to think on a solution on of a biodiesel processor "off the grid" perhaps using stirling engines an other technologies, just a personal challenge... just playing thanks Eric Manolo Rolan Valencia, Spain -----Mensaje original----- De: borealbliss [mailto:[EMAIL PROTECTED] Enviado el: viernes, 26 de abril de 2002 23:31 Para: biofuel@yahoogroups.com Asunto: [biofuel] Re: [OT] vortex tube and stirling engine >hi all: >making a bit of searching on google i've found some information on >both technologies, and i've thought that they could be working >together, anyone has try something on that way? > >thanks in advance > >Manolo Rolan >Valencia, Spain It sounds inefficient- the energy produced by a Stirling engine run using a vortex tube would be less than the energy needed to compress the air to run the vortex tube in the first place. Wouldn't it? I suggest posting your message to one of these lists for a better answer: http://groups.yahoo.com/group/sesusa/ http://groups.yahoo.com/group/HotAirEngineSociety/ Eric __________________________________________________ Do You Yahoo!? Yahoo! Health - your guide to health and wellness http://health.yahoo.com ------------------------ Yahoo! Groups Sponsor ---------------------~--> Buy Stock for $4 and no minimums. FREE Money 2002. http://us.click.yahoo.com/k6cvND/n97DAA/ySSFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
