Ammonia Turbo Expander for OTEC

• 1.0 MW class
• 3000 RPM
• 4 axial stage
• 5-Axis CNC Milled Blisks
• High efficiency andgt; 87%
• "Back-Pullout" Concept
• Large diameter (680 mm)

ATS: Design Challenges

• Extreme Speed
  • 60000 RPM
  • Tip-Speed 629 m/s
• Extreme Power Density
  • 110 kW in 250 mm Dia, 22 kg
• Extreme Start Torques and Shock-Loads
• Overrunning Clutch Designed from Scratch
  • 12000 RPM
  • Very high shock loads
  • No lubrication
• Extremely Compact Integral Planetary Gearbox