Système de réduction des pertes par évaporation du cryogène.
Cryogenic boil-off reduction system.
Auteurs : PLACHTA D. W., GUZIK M. C.
Type d'article : Article
Résumé
A computational model of the cryogenic boil-off reduction system being developed by NASA as part of the Cryogenic Propellant Storage and Transfer technology maturation project has been applied to a range of propellant storage tanks sizes for high-performing in-space cryogenic propulsion applications. This effort focuses on the scaling of multi-layer insulation (MLI), cryocoolers, broad area cooling shields, radiators, solar arrays, and tanks for liquid hydrogen propellant storage tanks ranging from 2 to 10 m in diameter. Component scaling equations were incorporated into the Cryogenic Analysis Tool, a spreadsheet-based tool used to perform system-level parametric studies. The primary addition to the evolution of this updated tool is the integration of a scaling method for reverse turbo-Brayton cycle cryocoolers, as well as the development and inclusion of Self-Supporting Multi-Layer Insulation. Mass, power, and sizing relationships are traded parametrically to establish the appropriate loiter period beyond which this boil-off reduction system application reduces mass. The projected benefit compares passive thermal control to active thermal control, where active thermal control is evaluated for reduced boil-off with a 90 K shield, zero boil-off with a single heat interception stage at the tank wall, and zero boil-off with a second interception stage at a 90 K shield. Parametric studies show a benefit over passive storage at loiter durations under one month, in addition to showing a benefit for two-stage zero boil-off in terms of reducing power and mass as compared to single stage zero boil-off. Furthermore, active cooling reduces the effect of varied multi-layer insulation performance, which, historically, has been shown to be significant.
Détails
- Titre original : Cryogenic boil-off reduction system.
- Identifiant de la fiche : 30011541
- Langues : Anglais
- Source : Cryogenics - vol. 60
- Date d'édition : 03/2014
- DOI : http://dx.doi.org/10.1016/j.cryogenics.2013.12.006
Liens
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Indexation
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Turbo-Brayton cryocoolers for space.
- Auteurs : ZAGAROLA M., McCORMICK J., SIXSMITH H., et al.
- Date : 22/07/2002
- Langues : Anglais
- Source : Proceedings of the nineteenth International Cryogenic Engineering Conference. ICEC 19.
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- Auteurs : ZAGAROLA M. V., MCCORMICK J. A.
- Date : 02/2006
- Langues : Anglais
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High rotational speed 2-5 K turbo-Brayton coole...
- Auteurs : DELCAYRE F., REALE S., MAROT G., et al.
- Date : 22/07/2002
- Langues : Anglais
- Source : Proceedings of the nineteenth International Cryogenic Engineering Conference. ICEC 19.
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Study on the miniature turbo-expander reverse B...
- Auteurs : HOU Y., LAI T., ZHAO H., et al.
- Date : 11/09/2012
- Langues : Anglais
- Source : Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
- Formats : PDF
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Cryocoolers 8. Proceedings of the international...
- Organisateur : ROSS R. G. Jr
- Date : 1995
- Langues : Anglais
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