THERMODYNAMIC CONSIDERATIONS FOR MHD SPACE POWER SYSTEMS
Thermodynamic efficiencies and radiator sizes of Brayton Cycle MHD generator systems, with and without regenerators, were obtained. A new gas cycle, the TriCycle, was synthesized. The Tri-Cycle has a radiator size as small as the regenerative Brayton Cycle, but a higher pressure ratio. A new cycle was discovered which operates on a dissociating chemical reaction and combines the advantages of a dry gas expansion, a liquid compression, and a Rankine Cycle size radiator. Entropy generation in supersonic MHD generators was analyzed, the polytropic efficiency was related to the generator operating parameters. Transient boil-off and refrigeration techniques were examined. Multiple radiation shield insulation thicknesses were computed. An optimum temperature ratio for heat rejection from an active refrigeration system was found for superconducting magnets. (auth)
- Research Organization:
- General Electric Co. Missile and Space Div., Valley Forge Space Technology Center, King of Prussia, Penna.
- NSA Number:
- NSA-17-038577
- OSTI ID:
- 4657828
- Report Number(s):
- R62SD83; AD-291783
- Country of Publication:
- United States
- Language:
- English
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BRAYTON CYCLE
CHEMICAL REACTIONS
COMPUTERS
EXPANSION
GAS FLOW
GASES
HEAT EXCHANGERS
HEAT TRANSFER
LOW TEMPERATURE
MAGNETOHYDRODYNAMICS
MAGNETS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
POWER
PRESSURE
SHIELDING
SPACE APPLICATIONS AND TECHNOLOGY
STEAM
SUPERCONDUCTIVITY
TEMPERATURE
THERMODYNAMICS
THICKNESS
TRANSIENTS
TURBINES