Cooldown of Shrouded Spherical Vessels in Liquid Nitrogen
The purpose of the experimental investigation of boiling on shrouded spheres was to provide a basis for the design of high-pressure, low-temperature gas storage tanks. Shrouded helium tanks were considered for use in the Saturn V space system. Several such tanks were connected in series and were cooled by liquid nitrogen flowing between the tank walls and the shrouds (also in series) during loading. The weight of the system and the time available for loading were limited ; therefore, determination of the smallest tank-shroud gap compatible with rapid cooldown was needed. A narrow gap may inhibit boiling heat transfer from the tank walls if it is too small to permit unrestricted bubble growth and vapor flow.
KeywordsHeat Flux Boiling Heat Transfer Copper Sphere Cryogenic Engineer Boiling Region
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