국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Experimental Studies of Liquefaction and Densification of Liquid Oxygen
저자	Partridge, Jonathan Koert
Keyword	COMBUSTION PRODUCTS;; CONDENSATION;; CRYOGENIC COOLING;; DENSIFICATION;; HEAT EXCHANGERS;; HEAT TRANSFER COEFFICIENTS;; LIQUEFACTION;; LIQUID OXYGEN;; LIQUID ROCKET PROPELLANTS;; ULLAGE;; WORKING FLUIDS
URL	http://hdl.handle.net/2060/20100036659
보고서번호	KSC-2010-220
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	The propellant combination that offers optimum performance is very reactive with a low average molecular weight of the resulting combustion products. Propellant combinations such as oxygen and hydrogen meet the above criteria, however, the propellants in gaseous form require large propellant tanks due to the low density of gas. Thus, rocketry employs cryogenic refrigeration to provide a more dense propellant stored as a liquid. In addition to propellant liquefaction, cryogenic refrigeration can also conserve propellant and provide propellant subcooling and propellant densification. Previous studies analyzed vapor conditioning of a cryogenic propellant, with the vapor conditioning by either a heat exchanger position in the vapor or by using the vapor in a refrigeration cycle as the working fluid. This study analyzes the effects of refrigeration heat exchanger located in the liquid of the common propellant oxidizer, liquid oxygen. This study predicted and determined the mass condensation rate and heat transfer coefficient for liquid oxygen.