Accession Number : ADD011301

Title :   Piezoelectric Polymer Heat Exchanger.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Edelman,S ; Ballard,L D

Report Date : 03 Jan 1984

Pagination or Media Count : 6

Abstract : Disclosed is an apparatus for providing for increased heat transfer efficiency of a heat exchanger by separating contiguous fluid conductive channels by means of a flexible sheet fabricated from a piezoelectric polymer. An electrode pattern of predetermined configuration is applied to one or both sides of the piezoelectric sheet and an electrical signal applied thereto in order to set the sheet into a flexural resonance condition whereupon a standing wave pattern is established to not only break up the boundary layer of fluid which adheres to each side of the sheet, but also minimizing the thickness of the laminar sub-layer.

Descriptors :   *Patents, *Heat exchangers, *Piezoelectric materials, *Polymers, Electrodes, Heat transfer, Sheets, Efficiency, Fluid flow, Channel flow

Subject Categories : Plastics
      Air Condition, Heating, Lighting & Ventilating
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE