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Transient Modeling of Large Scale Integrated Refrigeration and Storage SystemsRecently, next generation techniques and designs were demonstrated using Integrated Refrigeration and Storage (IRAS) for large scale storage of liquid hydrogen at NASA Kennedy Space Center (KSC) in Florida. Zero boil-off, densification, and in-situ liquefaction of hydrogen were achieved at various fill levels inside a custom-built 125,000 liter, horizontal-cylindrical IRAS tank, validating the applicability of the concept for large scale cryo-fluid storage architectures. This paper will discuss a number of transient physics models developed to predict the bulk behavior of large IRAS systems, and the comparison of those models to data gathered during the KSC test campaign. In an attempt to extent their usefulness to future IRAS designs, these models were agnostic with respect to stored fluid, tank size and geometry. Behavior during densification testing was examined at three fill levels, and ultimately the depressurization and bulk temperature trends of the KSC tests were predicted with good accuracy.
Document ID
Document Type
Conference Paper
Swanger, Adam M. (NASA Kennedy Space Center Cocoa Beach, FL, United States)
Date Acquired
October 18, 2018
Publication Date
September 3, 2018
Subject Category
Technology Utilization and Surface Transportation
Report/Patent Number
Meeting Information
International Cryogenic Engineering Conference(Oxford)
Distribution Limits
Work of the US Gov. Public Use Permitted.

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