Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

You probably designed your engine far better than I could. Are you thinking of selling kits?


I found Stirling engines to be sensitive in the heat gathering and heat shedding ratio.

The heat shedding capability needs to be greater than the heat gathering.
Which isn't easy as the heat input can be generously applied but cooling is generally harder.

Thank you.. Yes planning to sell these as assembly kits..
Yes correct, generally I will expose the cold junction to atmosphere but this time I tried with water at room temp and water at less than 15 deg C. The results were surprising, sudden acceleration in rotational speed. planning to perform a conduction/convection analysis to see which cooling method best suited but this is future plan might not be needed now.