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A study in design of travelling field electromagnetic pumps for liquid metals

Author
Watt, David A. P., b. 1830
Published
United Kingdom : [publisher not identified], 1955.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1955.
Physical Description
microopaque : positive ; 8 x 13 cm

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Summary
A simplified theory of design of a travelling field electromagnetic pump is presented. Optimum conditions of design are deduced together with the requirement for maximum rate of pressure rise. The theory is applied to examples for Na and Pb-Bi alloy. An optimized design of d-c pump is compared with a-c designs for the latter. While acceptable efficiences in units of convenient size were found possible for a-c traveling field pumps applied to the low density liquid metals, this type is shown to be d-c pump is compared with a-c designs for the latter. While acceptable efficiences in units of convenient size were found possible for a-c travelling field pumps applied to the low density liquid metals, this type is shown to be inherently at a great disadvantage when considered for the larger power requirements of the high density, high resistivity liquid metals. This requirement was met by compact high power d-c pumps supplied either from high efficiency homopolar generators or, where space permits, from rectifier sets. Theoretical power/weight ratings for optimized designs are cited for 20 to 25 hp/ton for a FLIP unit handling Na and r5 to 150 hp/ton for a d-c pump for Pb-Bi alloy. The estimated over-all efficiency is near 40% in each case, including the d-c source losses. Numerous curves of the design parameters for travelling field pumps for a wide range of wall/liquid conductivity ratio are contained. (auth)
Report Numbers
AERE-ED/R-1696
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
NSA number: NSA-14-019049
OSTI Identifier 4186130
Research organization: United Kingdom Atomic Energy Authority. Research Group. Atomic Energy Research Establishment, Harwell, Berks, England (United Kingdom).
View MARC record | catkey: 38051811