RAPID, HIGH-PRESSURE TRANSFER OF LIQUID OXYGEN WIGHIN A SYSTEM IMMERSED IN LIQUID NITROGEN
Abstract
A small cryogenic transfer system was constructed and tested with liquid O and liquid N. Transfer pressures were varied between 50 and 450 psig. The test tanks were immersed in a vented tank of liquid nitrogen so that liquid oxygen could be transferred in a sub-cooled thermodynamic state. Tests were carried out in which (a) an empty tank was pressurized and the pressure was then held for one minute, (b) a tank full of liquid was pressurized and liquid transferred to a receiver tank within one minute. Gas requirements and tank temperatures and pressures were measured in each test. Estimates of the condensed gas and the residual cold gas were made from materialbalance calculations. In one run, liquid O was pressurized and transferred with N gas. Samples of liquid O were taken in the receiver tank and analyzed for inert contamination. No contamination of the transferred O was noted. An analytical model is proposed for calculating the rate of heat transfer to the walls and liquid. The heat-transfer estimation was combined with an equivalent mass concept derived from thermodynamics to yield estimated values of gas comsumption. The calculated values of pressurization gas requirements for all runs were with ! 15% of experimental values. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1959
- Accession Number
- AD0267498
Entities
Organizations
- Arthur D. Little