For stirling cooling using LENR you want the elegant Vuilleumer cycle - basically slapping two stirling cycles together, one driven by heat and the other using that work to cool, all without ever converting into shaft output power, just 1 piston and 2 displacers. http://en.wikipedia.org/wiki/Vuilleumier_cycle This is pretty much only useful if you are trying to achieve cryogenic temperatures. Otherwise absorption cooling cycles are a lot cheaper and easier for domestic and industrial applications. http://en.wikipedia.org/wiki/Absorption_refrigerator
On 1 December 2011 23:26, Horace Heffner <[email protected]> wrote: > http://machinedesign.com/**article/infinia-uses-stirling-** > cycle-for-solar-power-and-air-**conditioning-0811<http://machinedesign.com/article/infinia-uses-stirling-cycle-for-solar-power-and-air-conditioning-0811> > > Quote: > > > Recently, Infinia engineers decided to run the Stirling cycle backwards, > sort of, applying ac power and getting the device to move heat out of rooms > or spaces, thus making it a Stirling air conditioner (StAC). > > For the StAC, ac power fed into the Stirling motor moves a piston back and > forth. When it moves the piston forward, it moves high-pressure helium > warmed by the interior toward the exterior where heat exchangers, aided by > a fan, dump as much heat as possible from the piston into the outside > atmosphere. The piston is then moved back, expanding and cooling the > helium, letting it absorb more heat from the interior space with the help > of another fan. Flexure bearings and clearance seals eliminate rubbing and > wear on parts. > > Compared to conventional air conditioners, StAC doesn’t have losses due to > throttling or superheating the working fluid, and the Stirling motor is 93% > efficient. And unlike traditional air conditioners, which can only be > turned on or off to regulate temperature, the StAC can adjust the speed of > its fan to modulate cooling and more closely match the thermal load. > > Using the same-size Stirling device as the PowerDish, Infinia has built a > 1-ton air conditioner with a coefficient of performance greater than 4. > > Best regards, > > Horace Heffner > http://www.mtaonline.net/~**hheffner/<http://www.mtaonline.net/~hheffner/> > > > > >
