POWER

1
POWER ENERGY STORAGE CONCEPTS TECHNOLOGIES

• NASA Exploration Strategy Architecture Industry
  Workshop
• U. S. Chamber of Commerce
• August 15, 2007

Chris Moore NASA Headquarters
2
Lunar Outpost Power System

• 25 kW baseline power requirement for lunar
  outpost
• Deployable Solar Power Units (SPUs) provide 6 kW
  each
• 2 kW Makeup Power Units (MPUs) use regenerative
  fuel cells to supply power during eclipse periods
• 120 hr at lunar poles
• 14 days at lunar equator
• 40 kW Fission Surface Power System is an option
  being considered.

3
Power Energy Storage Technology Needs
Regenerative fuel cells for lunar outpost energy
storage
Advanced batteries for spacesuits EVA tools
Affordable fission surface power systems
Power systems for ISRU
Prototype deployable Solar Power Units
Primary fuel cells for rovers
4
Fission Surface Power System

• NASA, DOE, and industry team completed
  Affordable Fission Surface Power System study to
  define system concept and estimate development
  costs.
• 40 KWe power output
• UO2 fuel
• NaK liquid metal coolant system
• Cost lt 1.4B

5
Key Questions

• What are the architecture tradeoffs of solar vs.
  nuclear power systems?
• What are the system tradeoffs of multiple cable
  runs vs. single power backbone?
• What are the system tradeoffs of deployable power
  cables vs. power beaming?
• What are alternate concepts for energy storage?
  (e.g., thermal energy storage)
• What types of demonstrations are needed to
  validate power system concepts and technologies?