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Electrohydrodynamic heat pipe experimentsExperiments with two electrohydrodynamic heat pipes are reported. Both devices employ an electromechanical flow structure for axial liquid flow and a capillary wicking structure for (1) collection of condensed liquid at the cooled end and (2) distribution of this liquid at the heated end. One device has circumferential grooving for the capillary structure and the other has feltmetal wicking. The experiments successfully demonstrate the electrohydrodynamic heat pipe concept. Compatibility of the two circumferential wick structures with an axial electromechanical flow structure is also demonstrated. A significant mismatch of the capillary groove and electrohydrodynamic pumping capabilities results in severe hydrodynamic burn-out limiting in the first heat pipe. Both devices have very poor over-all thermal conductances of the order of 1-2 W/deg C, reflecting the generally poor heat-transfer properties of the dielectric working fluids required in electrohydrodynamic heat pipes.
Document ID
19740047585
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Jones, T. B.
Perry, M. P.
(Colorado State University Fort Collins, Colo., United States)
Date Acquired
August 7, 2013
Publication Date
May 1, 1974
Publication Information
Publication: Journal of Applied Physics
Volume: 45
Subject Category
Thermodynamics And Combustion
Accession Number
74A30335
Funding Number(s)
CONTRACT_GRANT: NGR-06-002-127
Distribution Limits
Public
Copyright
Other

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