Conference proceeding
Design of a Helium Vapor Shroud for Liquid Hydrogen Fueling of an Unmanned Aerial Vehicle (UAV)
ADVANCES IN CRYOGENIC ENGINEERING, Vol.278
Cryogenic Engineering Conference (Madison, Wisconsin, 07/09/2017 - 07/13/2017)
2017
Handle:
https://hdl.handle.net/2376/103797
Abstract
Filling a vehicular liquid hydrogen fuel tank presents the potential for flammable mixtures due to oxygen concentration from liquid air condensation. Current liquid hydrogen tank designs utilize insulating paradigms such as aerogel/fiberglass materials, vacuum jackets, or inert gas purge systems to keep the outer surface from reaching the condensation temperature of air. This work examines the heat transfer at the refuelling connection of the tank to identify potential areas of condensation, as well as the surface temperature gradient. A shrouded inert gas purge was designed to minimize vehicle weight and refuelling time. The design of a shrouded inert gas purge system is presented to displace air preventing air condensation. The design investigates 3D printed materials for an inert gas shroud, as well as low-temperature sealing designs. Shroud designs and temperature profiles were measured and tested by running liquid nitrogen through the filling manifold. Materials for the inert gas shroud are discussed and experimental results are compared to analytical model predictions. Suggestions for future design improvements are made.
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Details
- Title
- Design of a Helium Vapor Shroud for Liquid Hydrogen Fueling of an Unmanned Aerial Vehicle (UAV)
- Creators
- K CavenderC EvansJ HaneyJ Leachman
- Publication Details
- ADVANCES IN CRYOGENIC ENGINEERING, Vol.278
- Conference
- Cryogenic Engineering Conference (Madison, Wisconsin, 07/09/2017 - 07/13/2017)
- Academic Unit
- Mechanical and Materials Engineering, School of
- Identifiers
- 99900564200301842
- Language
- English
- Resource Type
- Conference proceeding