ITEMS

modern scholarly publishers in the finest tradition

References

	Search

Annual Reviews of Heat Transfer

ISSN 1049-0787

Individual price:

$175.00 (Must be sent to your home address)

You can order single issue or individual article. To purchase a single issue or an individual article as well as to view tables of contents and abstracts click on issue number.

Institutional price:

$349.00

Volumes per year:

various

Year 2000

642 pages

Volume price - $141.00

ELECTRODE DESIGN, FABRICATION, AND MATERIALS SCIENCE FOR EHD-ENHANCED HEAT AND MASS TRANSPORT

Dr. Mike M. Ohadi
Small and Smart Thermal Systems Laboratory, Center for Energy Environmental Engineering, Department of Mechanical Engineering, University of Maryland, College Park, Maryland 20742, USA

J. Darabi
Center for Environmental Energy Engineering, Department of Mechanical Engineering, University of Maryland, College Park, MD 20742-3035, USA

B. Roget
Center for Environmental Energy Engineering, Department of Mechanical Engineering, University of Maryland, College Park, MD 20742-3035, USA

ABSTRACT

The eleclrohydrodynamic (EHD) technique has demonstrated its potential for significantly reducing heat exchanger size or volume, while providing on-line/on-dcmand control for heat transfer surface heating or cooling. Electrode fit is important for successful implementation of the EHD technique in practical applications. The objective of this review is to advance the understanding of the EHD phenomenon, particularly as it relates to factors contributing to an optimal electrode design for momentum and energy exchange in single-phase and phase-change processes in energy conversion, refrigeration, power, and process industries. Issues such as electrode geometry, orientation, and material, as well as any long-term effects on the system reliability and operational performance, are of special interest. The information presented in this article includes the most recent and advanced information. Specific emphasis is placed on single-phase flow of gases and liquids and two-phase boiling and condensation processes. In this work, fundamental equations governing the EHD body force and the mechanisms involved in heat transfer enhancement are presented first. Then the electrode geometries are reviewed and summarized in a tabulated, casy-to-follow format. Where possible, schematic diagrams for certain electrodes are provided, and the advantages and disadvantages of each design are discussed. For a given application the optimum electrode or heat transfer configurations are identified.