Cowboy:
Thanks for the link.
My quick review, earlier this week, of the Global Cooling website you linked, did not indicate any applications of the Stirling Cooler larger than about 1 cubic foot (30 litre) capacity.
Apparently, Global Cooling (and others) are working on a 270 litre (9.5 Cu. Ft.) Unit, as described in their research paper:
RECENT ADVANCES IN STIRLING CYCLE REFRIGERATION
by D.M.BERCHOWITZ, D. KIIKKA ,and B.D.MENNINK (Global Cooling & Sunpower)
http://www.globalcooling.com/pdfs/10_recentadvances.pdf
As I previously requested, I’d be very interested to learn of any commercially available Stirling Cycle units, suitable for practical use in cruising boat refrigerators (not small portable coolers).