Heat exchange – With agitating or stirring structure
Patent
1987-11-06
1989-08-01
Jones, Larry
Heat exchange
With agitating or stirring structure
165 85, F28F 1312
Patent
active
048526428
ABSTRACT:
A heat exchange device including at least one inner cylinder member and at least one outer cylinder member, defining therebetween one or more annuli through which pressurized heat exchange medium is forced to flow. One or more rotatable members having formed thereon a plurality of finger-like projections that define longitudinal continuous or segmented grooves are disposed within the annuli. The pressurized heat exchange medium imparts angular force to the rotatable member causing it to flow vary rapidly with great vorticity within the grooves and also between the distal ends of the finger members and the adjacent containing circumferential surface of the inner and outer cylinder members. In some cases, angular force is imparted to the rotatable member(s) by external power sources, as a supplement to the flow of the pressurized heat exchange medium. The rapid flow and vorticity of the heat exchange medium is effective to acheive at least a ten fold increase in heat transfer gradients or coefficients while at the same time maintaining only a nominal increase in pressure drop through the device.
REFERENCES:
patent: 4261112 (1981-04-01), Apitz
patent: 4377202 (1983-03-01), Nakamura et al.
patent: 4621684 (1986-11-01), Delahunty
Brown Robert A.
Jones Larry
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