We propose a new device-level concept for a thermal switch that exploits the temperature dependence of the magnetization of a ferromagnetic material oscillating between a hot and a cold surface. A numerical model is constructed to examine the operation of the thermal switch. The switch turn-on temperature can be readily tuned by adjusting physical parameters of the device, such as the gap between the hot and cold surfaces and the spring constant of the structure supporting the ferromagnet. Experimentally determined oscillation frequencies are consistent with the model predictions. Additionally, it is shown that the thermal contact conductance has a large influence on the device performance. The time-averaged heat flux and effective conductance compare favorably to existing thermal switch technologies over a range of hot surface temperatures.
Skip Nav Destination
e-mail: lavine@seas.ucla.edu
Article navigation
Research Papers
An Investigation of a Tunable Magnetomechanical Thermal Switch
Katherine E. Bulgrin,
Katherine E. Bulgrin
University of California
, Los Angeles, Mechanical and Aerospace Engineering Department, Los Angeles
, CA 90095
Search for other works by this author on:
Y. Sungtaek Ju,
Y. Sungtaek Ju
University of California
, Los Angeles, Mechanical and Aerospace Engineering Department, Los Angeles
, CA 90095
Search for other works by this author on:
Greg P. Carman,
Greg P. Carman
University of California
, Los Angeles, Mechanical and Aerospace Engineering Department, Los Angeles
, CA 90095
Search for other works by this author on:
Adrienne S. Lavine
e-mail: lavine@seas.ucla.edu
Adrienne S. Lavine
University of California
, Los Angeles, Mechanical and Aerospace Engineering Department, Los Angeles
, CA 90095
Search for other works by this author on:
Katherine E. Bulgrin
University of California
, Los Angeles, Mechanical and Aerospace Engineering Department, Los Angeles
, CA 90095
Y. Sungtaek Ju
University of California
, Los Angeles, Mechanical and Aerospace Engineering Department, Los Angeles
, CA 90095
Greg P. Carman
University of California
, Los Angeles, Mechanical and Aerospace Engineering Department, Los Angeles
, CA 90095
Adrienne S. Lavine
University of California
, Los Angeles, Mechanical and Aerospace Engineering Department, Los Angeles
, CA 90095e-mail: lavine@seas.ucla.edu
J. Heat Transfer. Oct 2011, 133(10): 101401 (7 pages)
Published Online: August 11, 2011
Article history
Received:
March 18, 2010
Revised:
April 22, 2011
Online:
August 11, 2011
Published:
August 11, 2011
Citation
Bulgrin, K. E., Ju, Y. S., Carman, G. P., and Lavine, A. S. (August 11, 2011). "An Investigation of a Tunable Magnetomechanical Thermal Switch." ASME. J. Heat Transfer. October 2011; 133(10): 101401. https://doi.org/10.1115/1.4004166
Download citation file:
Get Email Alerts
Cited By
Related Articles
Thermal Conduction Switch for Thermal Management of Chip Scale Atomic Clocks (IMECE2006-14540)
J. Electron. Packag (June,2008)
Model Synthesis for Design of Switched Systems Using a Variable Structure System Formulation
J. Dyn. Sys., Meas., Control (December,2003)
Deformation and Fracture of Functional Ferromagnetics
Appl. Mech. Rev (March,2008)
Exploration of New Concepts for Mass Detection in Electrostatically-Actuated Structures Based on Nonlinear Phenomena
J. Comput. Nonlinear Dynam (April,2009)
Related Proceedings Papers
Related Chapters
Structure of Magnetic Actuator
Magnetic Bearings for Mechanical Cardiac Assist Devices
An Intelligent Control System Based on FPGA for Telephone Communication Network
International Conference on Electronics, Information and Communication Engineering (EICE 2012)
The Study of 640GBIT/S Routing Technology with Processing in Parallel
International Conference on Electronics, Information and Communication Engineering (EICE 2012)