Electrohydrodynamically Enhanced Heat Transfer in Liquids—A Review

Abstract

Publisher Summary This chapter serves as a useful synopsis of the field of electrohydrodynamically (EHD) coupled heat transfer in liquids, so the equations of motion are those of a viscous incompressible fluid. An exhaustive published bibliography of work on EHD coupled heat transfer is provided and reviews the principal contributions made by Kronig and Ahsmann. The conventional formulation of the equations of EHD is provided to facilitate discussion of various theoretical contributions. The classification of important parameters used in EHD heat-transfer research is summarized. Some important aspects of EHD coupled heat-transfer enhancement including a succinct set of conditions that define the various regimes are reviewed. Specific application of the complex electrohydrodynamic mechanisms involved in EHD coupled heat transfer in liquids is considered. Potential applications of EHD heat transfer include general enhancement of pool boiling for heat exchanger equipment. Certain advantages and disadvantages of EHD coupled heat transfer in low temperature and cryogenic high-voltage cables should be assessed. The boiling and condensation heat transfer and basic configuration of an EHD heat pipe using electromechanical flow structure to promote condensate return flow are diagrammatically represented. The list of experimental observations and theoretical conclusions are summarized and the principal results of the papers are reviewed.