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US 7,043,925 B2Granted
Densifier for simultaneous conditioning of two cryogenic liquids
AssigneeSierra Lobo, Inc.
InventorMark S. Haberbusch
Life of this patent
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AssigneeSierra Lobo, Inc.
InventorMark S. Haberbusch
Estimating the term…
A densifier (10) for simultaneously densifying two cryogenic liquids at different temperatures is provided. The densifier (10) has a thermoacoustic heat engine (20), a resonance tube (18) and a two stage pulse tube refrigerator (40). The thermoacoustic heat engine (20) generates oscillatory acoustical power required to generate net refrigeration power in the two-stage pulse tube refrigerator (40). The first stage (100) densifies a first cryogenic liquid to a first cryogenic temperature, and the second stage (200) densifies a second cryogenic liquid to a second, lower cryogenic temperature. The thermoacoustic heat engine (20) converts thermal energy to the oscillatory acoustical power required to generate net refrigeration in the first (100) and second (200) stages of the pulse tube refrigerator (40). No mechanical energy input is required, and therefore the invented densifier (10) has no moving parts.
A densifier for densifying two cryogenic liquids, said densifier comprising an oscillatory power source for generating oscillatory power, a resonance tube, and a pulse tube refrigerator, said pulse tube refrigerator being a two-stage pulse tube refrigerator having a first stage refrigeration unit and a second stage refrigeration unit, said first stage refrigeration unit being adapted to supercool a first cryogenic liquid to a first cryogenic temperature, said second stage refrigeration unit being adapted to supercool a second cryogenic liquid to a second cryogenic temperature, wherein said second cryogenic temperature is lower than said first cryogenic temperature.
A densified propellant management system comprising a densifier, and a cryogenic temperature probe, wherein said densifier comprises an oscillatory power source for generating oscillatory power, a resonance tube, and a pulse tube refrigerator, said pulse tube refrigerator being a two-stage pulse tube refrigerator having a first stage refrigeration unit and a second stage refrigeration unit, said first stage refrigeration unit being adapted to supercool a first cryogenic liquid to a first cryogenic temperature, said second stage refrigeration unit being adapted to supercool a second cryogenic liquid to a second cryogenic temperature, wherein said second cryogenic temperature is lower than said first cryogenic temperature.
Dependencies are inferred from the claim text.