Paraffin phase change material (PCM) is enhanced with suspended graphite nanofibers at high loading levels. The loading levels reach in excess of 10% by weight. The thermal effects of the nanofiber loading level, the PCM module design, and the applied power density on the transient thermal response of the system are examined. A strong effect of nanofiber loading level on thermal performance is found, including a suppression of Rayleigh-Benard convection currents at high loading levels. Increases in nanofiber loading level also result in lowered heating rates and greater thermal control of the heated base. Increases in power density are found to result in higher heating rates, and increases in mass lead to lower operating temperatures. The design of the module is found to have a strong effect on thermal performance.
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Heat Transfer Enhancement
Quantification of the Impact of Embedded Graphite Nanofibers on the Transient Thermal Response of Paraffin Phase Change Material Exposed to High Heat Fluxes
Kireeti Chintakrinda,
Kireeti Chintakrinda
Department of Mechanical Engineering,
Villanova University
, 800 Lancaster Avenue, Villanova, PA 19085
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Ronald J. Warzoha,
Ronald J. Warzoha
Department of Mechanical Engineering,
Villanova University
, 800 Lancaster Avenue, Villanova, PA 19085
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Randy D. Weinstein,
Randy D. Weinstein
Department of Chemical Engineering,
Villanova University
, 800 Lancaster Avenue, Villanova,PA 19085
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Amy S. Fleischer
Amy S. Fleischer
Department of Mechanical Engineering,
e-mail: amy.fleischer@villanova.edu
Villanova University
, 800 Lancaster Avenue, Villanova, PA 19085
Search for other works by this author on:
Kireeti Chintakrinda
Department of Mechanical Engineering,
Villanova University
, 800 Lancaster Avenue, Villanova, PA 19085
Ronald J. Warzoha
Department of Mechanical Engineering,
Villanova University
, 800 Lancaster Avenue, Villanova, PA 19085
Randy D. Weinstein
Department of Chemical Engineering,
Villanova University
, 800 Lancaster Avenue, Villanova,PA 19085
Amy S. Fleischer
Department of Mechanical Engineering,
Villanova University
, 800 Lancaster Avenue, Villanova, PA 19085e-mail: amy.fleischer@villanova.edu
J. Heat Transfer. Jul 2012, 134(7): 071901 (10 pages)
Published Online: May 22, 2012
Article history
Received:
December 17, 2010
Revised:
October 19, 2011
Online:
May 22, 2012
Published:
May 22, 2012
Citation
Chintakrinda, K., Warzoha, R. J., Weinstein, R. D., and Fleischer, A. S. (May 22, 2012). "Quantification of the Impact of Embedded Graphite Nanofibers on the Transient Thermal Response of Paraffin Phase Change Material Exposed to High Heat Fluxes." ASME. J. Heat Transfer. July 2012; 134(7): 071901. https://doi.org/10.1115/1.4006008
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