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Re: For real farmers
2004-05-24 21:25:45
On Mon, 24 May 2004 17:17:40 +0100, Stephen Temple
>In message > >>A well designed stirling engine might well do the trick >Any idea where one can be obtained. Google brings up lots of models and >experimental machines, but nothing in production. Well you missed this one: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&categoryX177&item813790251 what about: http://www.kockums.se/Products/kockumsstirlingm.html or http://www.stirlingenergy.com/genset_overview.htm > >Yet another technology said to be ready for the big time for a long >while now, about 150 years for this one. I've been involved in a number of discussions with stirling enthusiasts recently, their standpoint is that the stirling cycle is inherently more thermodynamically efficient than either otto or diesel cycles, so they assume if one could build a stirling that achieved the same fraction of the theoretical efficiency as has been achieved with ic engines it would be better. In practice it is limited by materials available to build it, just like a steam cycle. Now the real advantages of the stirling seem to be quietness and long life, this is why they are finally being deployed in small cogen. http://www.whispergen.com/ or http://www.microgen.com/main2.swf both these use stirling engines, one with a free piston, I have an account of one installed islanded in a cottage in Derby but cannot lay my hands on it presently. AJH
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