Seeking a thermal motor, ice bath and room temps

[mrelet]

Anyone know of a source for these or where they might be described? I'm seeking a continously revolving motor that is powered by the temp. difference between ice water and room ambient. The torque can be quite meager, say 0.5 oz-in.

 

[btrueblood]

Do a google search for Stirling Engines.

 

[Rich2001]

The Pasco Stirling Engine

http://store.pasco.com/pascostore/showdetl.cfm?&DID=9&Product_ID=51616&Detail=1

is an education engine that might be of interest.

A better engine is the free piston model

http://www.sunpower.com/products/index.html

though it is linear not rotary iand it require a high heat source.