MUMBAI, India, Aug. 22 -- Intellectual Property India has published a patent application (202517073124 A) filed by Praxair Technology, Inc., Danbury, U.S.A., on July 31, for 'system and method for combined liquefaction and densification of oxygen.'
Inventor(s) include Kromer, Brian, R.; Kelly, Sean, M; and Potratz, Seth, A.
The application for the patent was published on Aug. 22, under issue no. 34/2025.
According to the abstract released by the Intellectual Property India: "A system and method for the production and supply of a densified, liquid oxidant to a space vehicle launch facility with one or more launch platforms is provided. A low pressure gaseous oxygen stream is piped from a nearby air separation unit and is then liquefied and densified in a two-stage, integrated liquefaction/densification system. The first refrigeration stage is a nitrogen based reverse Brayton cycle refrigeration cycle, that liquefies the gaseous oxygen and subcools the resulting liquid oxygen to a temperature of about 81 Kelvin. The second refrigeration stage is a mixed refrigerant loop containing some combination of helium and/or neon refrigerants that densifies the liquid oxygen to a temperature of about 57 Kelvin. The integrated liquefaction and densification system may also be configured to densify liquid methane or other propellants used in space vehicle launches."
The patent application was internationally filed on Jan. 03, 2024, under International application No.PCT/US2024/010116.
Disclaimer: Curated by HT Syndication.
