NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Nucleate pool boiling: High gravity to reduced gravity; liquid metals to cryogensRequirements for the proper functioning of equipment and personnel in reduced gravity associated with space platforms and future space station modules introduce unique problems in temperature control; power generation; energy dissipation; the storage, transfer, control and conditioning of fluids; and liquid-vapor separation. The phase change of boiling is significant in all of these. Although both pool and flow boiling would be involved, research results to date include only pool boiling because buoyancy effects are maximized for this case. The effective application of forced convection boiling heat transfer in the microgravity of space will require a well grounded and cogent understanding of the mechanisms involved. Experimental results are presented for pool boiling from a single geometrical configuration, a flat surface, covering a wide range of body forces from a/g = 20 to 1 to a/g = 0 to -1 for a cryogenic liquid, and from a/g = 20 to 1 for water and a liquid metal. Similarities in behavior are noted for these three fluids at the higher gravity levels, and may reasonably be expected to continue at reduced gravity levels.
Document ID
19880015080
Document Type
Conference Paper
Authors
Merte, Herman, Jr.
(Michigan Univ. Ann Arbor, MI, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Publication Information
Publication: New Mexico Univ., Transactions of the Fifth Symposium on Space Nuclear Power Systems
Subject Category
Materials Processing
Funding Number(s)
CONTRACT_GRANT: NAS8-20228
CONTRACT_GRANT: NAG3-633
CONTRACT_GRANT: NAG3-589
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Document Inquiry
No Preview Available