The electric field applied in dielectric fluids causes an imbalance in the dissociation-recombination reaction generating free space charges. The generated charges are redistributed by the applied electric field, resulting in the heterocharge layers in the vicinity of the electrodes. Proper design of the electrodes generates net axial flow motion pumping the fluid. The electrohydrodynamic (EHD) conduction pump is a new device that pumps dielectric fluids utilizing heterocharge layers formed by imposition of electrostatic fields. This paper experimentally evaluates the performance of a two-phase (liquid-vapor) breadboard thermal control loop consisting of an EHD conduction pump, condenser, preheater, evaporator, transport lines, and reservoir (accumulator). This study is performed to address the feasibility of the EHD two-phase loop for thermal control of a laser equipment with high heat flux source. The generated pressure head and the maximum applicable heat flux are experimentally determined at various applied voltages and sink temperatures. Recovery from the evaporator dryout condition by increasing the applied voltage to the pump is also demonstrated. The performance of the EHD conduction pump in this study confirms that the EHD conduction pump can be used as a stand-alone system for high heat flux thermal control.
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e-mail: jeong05@gmail.com
e-mail: Jeffrey.R.Didion@nasa.gov
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November 2007
This article was originally published in
Journal of Heat Transfer
Research Papers
Thermal Control Utilizing an Electrohydrodynamic Conduction Pump in a Two-Phase Loop With High Heat Flux Source
Seong-II Jeong,
Seong-II Jeong
Satellite Technology Research Center,
e-mail: jeong05@gmail.com
Korea Advanced Institute of Science and Technology
, 373-1, Guseong-Dong, Yuseong-Gu, Daejeon, 305-701, Republic of Korea
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Jeffrey Didion
Jeffrey Didion
Thermal Technology Development,
e-mail: Jeffrey.R.Didion@nasa.gov
NASA Goddard Space Flight Center
, Greenbelt, MD 20771
Search for other works by this author on:
Seong-II Jeong
Satellite Technology Research Center,
Korea Advanced Institute of Science and Technology
, 373-1, Guseong-Dong, Yuseong-Gu, Daejeon, 305-701, Republic of Koreae-mail: jeong05@gmail.com
Jeffrey Didion
Thermal Technology Development,
NASA Goddard Space Flight Center
, Greenbelt, MD 20771e-mail: Jeffrey.R.Didion@nasa.gov
J. Heat Transfer. Nov 2007, 129(11): 1576-1583 (8 pages)
Published Online: February 5, 2007
Article history
Received:
February 6, 2006
Revised:
February 5, 2007
Citation
Jeong, S., and Didion, J. (February 5, 2007). "Thermal Control Utilizing an Electrohydrodynamic Conduction Pump in a Two-Phase Loop With High Heat Flux Source." ASME. J. Heat Transfer. November 2007; 129(11): 1576–1583. https://doi.org/10.1115/1.2759971
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