Miniature Turbines

<  10 kW or < 50mm diameter

 1.  Fuel Cell Turboexpander (automotive)

  • 1-stage radial expander
  • Air @ 42 psia, 300⁰F, 2.9 pressure ratio
  • 1.78” tip diameter, 26K – 151K RPM
  • 7.7 kW max.

2.  Turbocharger turbine (automotive)

  • 1-stage radial turbine, nozzle-less
  • Air @ 23.7 psia, 1263⁰F, 1.6 pressure ratio
  • 1.5” tip diameter, 158K RPM
  •  2.6 kW @ 76.5% efficiency1.

3.  Miniature Air Drill Turbine

  • 6-stages, full admission subsonic reaction turbine
  • Air @ 104.7 psia, 68⁰ F, 7.1 pressure ratio
  • 1 inch tip diameter, 65,000 RPM
  • 2.5 kW @ 68% efficiency

4.  Supercritical CO2 expander

  • 1-stage radial expander
  • Supercritical CO2 @ 1670 psia, 104⁰ F, 2.9 pressure ratio
  • 0.6 inch tip diameter, 51K – 394K RPM’s investigated
  • 0.5 kW @ 35% max. efficiency

5.  Miniature Air Test Turbine

  • 1-stage, full admission supersonic reaction turbine
  • Air @ 65 psia, 70⁰ F, 4.4 pressure ratio
  • 0.3 inch tip diameter, 500K rpm,
  • 0.9 kW @ 68% efficiency

6.  Regenerative blower design

  • 1-stage impeller
  • Air @ 14.7 psia, 68⁰ F, minimal pressure rise
  • 1.5” tip diameter, 4651 RPM