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OPTIMIZED HEAT INTERCEPTION FOR CRYOGEN TANK SUPPORT
Author(s) -
Ed Canavan,
Franklin G. Miller,
J. G. Weisend,
John Barclay,
Susan Breon,
Jonathan Demko,
Michael DiPirro,
J. Patrick Kelley,
Peter Kittel,
Arkadiy Klebaner,
Al Zeller,
Mark Zagarola,
Steven Van Sciver,
Andrew Rowe,
John Pfotenhauer,
Tom Peterson,
Jennifer Lock
Publication year - 2008
Publication title -
aip conference proceedings
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.177
H-Index - 75
eISSN - 1551-7616
pISSN - 0094-243X
DOI - 10.1063/1.2908508
Subject(s) - heat transfer , laminar flow , mechanics , heat exchanger , flow (mathematics) , materials science , nuclear engineering , tube (container) , minification , volumetric flow rate , leak , pallet , environmental science , aerospace engineering , mechanical engineering , computer science , thermodynamics , physics , engineering , composite material , programming language
We consider means for using the cooling available in boil-off gas to intercept heat conducted through the support structure of a cryogen tank. A one-dimensional model of the structure coupled to a gas stream gives an analytical expression for heat leak in terms of flow rate for temperature independent-properties and laminar flow. A numerical model has been developed for heat transfer on a thin cylindrical tube with an attached vent line. The model is used to determine the vent path layout that will minimize heat flow into the cryogen tank. The results are useful for a number of applications, but the one of interest in this study is the minimization of the boil-off in large cryopropellant tanks in low Earth and low lunar orbit.

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