Vacuum pump and propellant densification using such a pump

Details Vacuum pump and propellant densification using such a pump Vacuum pump and propellant densification using such a pump

1999-06-18

2000-09-12

Capossela, Ronald

Refrigeration

Utilizing fuel as refrigerant

62 461, 62 502, 62100, 62268, F25B 1900

Patent

active

06116030&

ABSTRACT:
A vacuum pump of the steam-ejector type uses steam generated by the combustion of hydrogen and oxygen. The mass of ejected steam is increased, and the temperature of the ejected steam is reduced, by injection of water into the combustion product. Propellant densification is accomplished by using such a vacuum pump to reduce the vapor pressure of a cryogenic liquid, thereby reducing its temperature. The cryogenic liquid may be the propellant, or it may be a coolant medium thermally coupled to the propellant.

REFERENCES:
patent: 5162094 (1992-11-01), Curtis
patent: 5297389 (1994-03-01), Athey et al.
patent: 5343705 (1994-09-01), Athey et al.
patent: 5644920 (1997-07-01), Lak et al.
patent: 5819542 (1998-10-01), Christiansen et al.
patent: 5927082 (1999-07-01), Sidelnikov et al.
"Fox Ejector Selector--a Selection Guide for Venturi-Ejector Equipment", Bulletin E-1.1, Fox Valve Development Corp., Dover, NJ.

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