Heat transfer enhancement of electrohydrodynamic (EHD) cooling system with magnetic field

As electronic device performance is enhanced, the amount of heat generation is also increased. Electrohydrodynamic (EHD) technology presents a promising alternative solution to address the cooling demands. The EHD flow is generated by a corona discharge, directly converting the electrical energy int...

Full description

Saved in:
Bibliographic Details
Published in:Journal of mechanical science and technology 2024, 38(8), , pp.3869-3879
Main Authors: Chung, Ji Hong, Sohn, Dong Kee, Ko, Han Seo
Format: Article
Language:English
Subjects:
Control
Convective heat transfer
Cooling loads
Cooling systems
Dynamical Systems
Electric corona
Electrohydrodynamics
Electromagnetic fields
Energy conversion efficiency
Energy distribution
Engineering
Flux density
Heat generation
Heat transfer coefficients
Industrial and Production Engineering
Kinetic energy
Light emitting diodes
Magnetic fields
Magnetic flux
Mechanical Engineering
Original Article
Velocity distribution
Vibration
Wind speed
기계공학
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:As electronic device performance is enhanced, the amount of heat generation is also increased. Electrohydrodynamic (EHD) technology presents a promising alternative solution to address the cooling demands. The EHD flow is generated by a corona discharge, directly converting the electrical energy into kinetic energy, and offers unique advantages over traditional cooling methods. The use of a magnetic field can improve the efficiency of the EHD flow by enhancing the local energy conversion. Experimental results showed that a magnetic field deflected the local velocity distribution, and improved the ionic wind velocity. At a magnetic flux density of 78.1 mT, the energy conversion efficiency was improved by 66.8 %. The convective heat transfer on the surface of high-power light emitting diode (LED) was analyzed. The heat transfer coefficient also increased under the effect of the electromagnetic field. The potential of alternative cooling systems for electronic devices using EHD technology was confirmed.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-024-2101-x