Active regulation of heat transfer

Details Active regulation of heat transfer Active regulation of heat transfer

1984-01-24

1985-05-07

Davis, Jr., Albert W.

Heat exchange

Regenerator

Checker brick structure

165 96, 16510428, F28F 1316

Patent

active

045152063

ABSTRACT:
Method and apparatus are described for regulating the transfer of heat between a first element and second element by interposing a fluid layer of mesomorphic phase liquid crystal material between the elements and thermally coupling the elements through the fluid layer, and by applying an electric field across the fluid layer of liquid crystal material. The electric field actively controls and regulates heat transfer according to either a first mode by reorienting the director of the liquid crystal material and therefore switching the thermal conductivity, or by a second mode electrically inducing convection current flow cells for increasing heat transfer between the elements by a factor as great as 10 or more.

REFERENCES:
patent: 2748356 (1956-05-01), Kaehni
patent: 3056587 (1962-10-01), Steigerwald
patent: 3448791 (1969-06-01), Clark
Domains Due to Electric and Magnetic Fields in Bulk Samples of Liquid Crystals, Liquid Crystal and Ordered Fluids, vol. 3, (1978), E. F. Carr.
Surface Deformation and Walls in the Conduction Regime of Nematic Liquid Crystals, Molecular Crystals and Liquid Crystals, vol. 64, pp. 299-304, (1981), R. W. H. Kozlowski and E. F. Carr.

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