http://www.youtube.com/watch?v=nJJcZ8xdKF4&feature=related 1 kW Stirling engine concept under development by mRT (Regenerative Thermal Machines). http://web.me.com/allan.j.o/Communicable_Insight/mRT-1k_.html Animation created by Duncan James of CADStudios (UK) Ltd. http://www.cadstudios.co.uk/
http://web.me.com/allan.j.o/Communicable_Insight/mRT-1k_.html EXCHANGERS Expansion: Spiral tubes of 120 mm nominal gauge length and provisional φid = 3.0 mm substitute conventional, parallel tubes with a view (a) to exploiting internal secondary flows and associated enhancement of mass/heat transfer between boundary layer and free stream (b) achieving enhanced heat transfer between external surfaces and combustion products. Quantitative information on combustion-side NTU and working-gas-side NTU value are unavailable. In compensation, the multiple-spiral feature affords unprecedented flexibility* in varying both NTU values, and offers the possibility of eliminating the NTU mis-match normally tolerated as inevitable.
Schematics and Applications of the ST05G Stirling Engine drafted by www.ve-ingenieure.de