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Development of high effectiveness droplet heat exchangers. Annual report, 15 Jun 1981-30 Jun 1982

Published
United States : [publisher not identified], 1982
Springfield, Va.: National Technical Information Service, [approximately 1982]
Physical Description
microfiche : negative ; 11 x 15 cm

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Summary
The droplet heat exchanger (DHX) utilizes the concept of direct contact heat transfer between two media to avoid some of the constraints and shortcomings of conventional heat exchanger. Initial analyses show that heat transfer directly between relatively small molten refractory droplets and a counterflowing airstream can be accomplished with high effectiveness in compact configurations if a number of technical problems can be resolved. Several fundamental fluid dynamics, heat transfer, materials, and design problems have been investigated. A series of simulation experiments has been carried out to determine conditions under which the desired droplet streams can be made. Both one-dimensional and two-dimensional models of drop/gas heat transfer and flow have been developed and used to evaluate both large scale, high temperature DHX configurations and configurations for a laboratory-scale test device. The work done to design a laboratory-scale droplet heat exchanger experiment is described. A number of liquids and solids have been studied to identify those which are suitable for high temperature DHX applications and for simulation tests. (LEW)
Report Numbers
DE86006349; DOE/ER/10918-T1
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: AC06-81ER10918
OSTI Identifier 6204231
Research organization: Mathematical Sciences Northwest, Inc., Bellevue, WA (USA).
View MARC record | catkey: 47362582