Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance

Shigeki Hirasawa; Tsuyoshi Kawanami; Katsuaki Shirai

doi:doi:10.11648/j.ajpa.20160405.12

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Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance

Shigeki Hirasawa, Tsuyoshi Kawanami, Katsuaki Shirai

Published in American Journal of Physics and Applications (Volume 4, Issue 5)

Received: 19 September 2016 Published: 19 September 2016

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Abstract

Thermal performance of electrocaloric refrigeration system composed with a thin electrocaloric material and thermal switches was numerically calculated. Two types of thermal switches were studied: a thermal switch of fluid motion and a thermal switch by changing the contact thermal conductance. The following results were obtained. For the thermal switch of fluid motion with the frequency 10 Hz, the thicknesses of the electrocaloric material 200 μm and the water flow channel 100 μm, the average heat transfer efficiency was 11%. For the thermal switch by changing contact thermal conductance with the frequency 1000 Hz, the thicknesses of the electrocaloric material 20 μm and the heat storage material 20 μm, the average heat transfer efficiency was 6% and the average heat flux transferred to the cold side of the system was 7 x 10⁴ W/m².

Published in	American Journal of Physics and Applications (Volume 4, Issue 5)
DOI	10.11648/j.ajpa.20160405.12
Page(s)	134-139
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2016. Published by Science Publishing Group

Keywords

Electrocaloric Refrigeration, Thermal Switch, Fluid, Contact, Thermal Resistance, Heat Transfer, Efficiency

References

[1]	R. Radebaugh, W. N. Lawless, J. D. Siegwarth, A. J. Morrow, "Feasibility of Electrocaloric Refrigeration for the 4-15 K Temperature Range, Cryogenics," vol. 19, 1979, pp. 187-208.
[2]	R. I. Epstein, K. J. Malloy, "Electrocaloric Devices Based on Thin-Film Heat Switches," Journal of Applied Physics, vol. 106, 064509, 2009.
[3]	Y. Jia, Y. S. Ju, "A Solid-State Refrigerator Based on the Electrocaloric Effect," Applied Physics Letters, vol. 100, 242901, 2012.
[4]	W. Sato, "A Study of a New Cooling Device Based on the Electrocaloric Effect," Proc. of the ASME 2013 International Mechanical Engineering Congress, San Diego, IMECE2013-62258, 2013.
[5]	D. Guo, J. B. Gao, Y. J. Yu, S. Santhanam, A. Slippey, G. K. Fedder, A. J. H. McGaughey, S.C. Yao, "Design and Modeling of a Fluid-Based Micro-Scale Electrocaloric Refrigeration System," International Journal of Heat and Mass Transfer, vol. 72, 2014, pp. 559-564.
[6]	M. Ozbolt, A. Kitanovski, J. Tusek, A. Poredos, "Electrocaloric Refrigeration: Thermodynamics, State of the Art and Future Perspectives," International Journal of Refrigeration, vol. 40, 2014, pp. 174-188.
[7]	S. Hirasawa, T. Nakamu, T. Kawanami, K. Shirai, "Study on Unsteady Thermal-Switching Function of Flat Heat Pipe," Proc. of the ASME 2015 International Mechanical Engineering Congress & Exposition, 2015, Houston, IMECE2015-50158, 2015.
[8]	S. Hirasawa, S. Fujimoto, T. Nakamu, T. Kawanami, K. Shirai, "Experiment on Heat Transfer Control by Changing Contact Thermal Resistance," Proc. of the JSME 2014 Mechanical Engineering Congress, Tokyo, G0610101, 2014 (in Japanese).
[9]	S. Hirasawa, T. Kawanami, K. Shirai, "Efficient Cooling System using Electrocaloric Effect," Journal of Electronics Cooling and Thermal Control, vol. 6, 2016, pp. 78-87.
[10]	Y. He, "Heat Capacity, Thermal Conductivity, and Thermal Expansion of Barium Titanate-Based Ceramics," Thermochimica Acta, vol. 419, 2004, pp. 135–141.
[11]	J. P. Holman, Heat Transfer, 9th Ed., McGraw-Hill International Book Co., Boston, 2002.
[12]	G. Zhang, Q. Li, H. Gu, S. Jiang, K. Han, M. R. Gadinski, M. A. Haque, Q. Zhang, Q. Wang, "Ferroelectric Polymer Nanocomposites for Room-Temperature Electrocaloric Refrigeration," Advance Material, vol. 27, 2015, pp. 1450-1454.

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APA Style

Shigeki Hirasawa, Tsuyoshi Kawanami, Katsuaki Shirai. (2016). Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance. American Journal of Physics and Applications, 4(5), 134-139. https://doi.org/10.11648/j.ajpa.20160405.12

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ACS Style

Shigeki Hirasawa; Tsuyoshi Kawanami; Katsuaki Shirai. Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance. Am. J. Phys. Appl. 2016, 4(5), 134-139. doi: 10.11648/j.ajpa.20160405.12

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AMA Style

Shigeki Hirasawa, Tsuyoshi Kawanami, Katsuaki Shirai. Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance. Am J Phys Appl. 2016;4(5):134-139. doi: 10.11648/j.ajpa.20160405.12

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@article{10.11648/j.ajpa.20160405.12,
  author = {Shigeki Hirasawa and Tsuyoshi Kawanami and Katsuaki Shirai},
  title = {Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance},
  journal = {American Journal of Physics and Applications},
  volume = {4},
  number = {5},
  pages = {134-139},
  doi = {10.11648/j.ajpa.20160405.12},
  url = {https://doi.org/10.11648/j.ajpa.20160405.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpa.20160405.12},
  abstract = {Thermal performance of electrocaloric refrigeration system composed with a thin electrocaloric material and thermal switches was numerically calculated. Two types of thermal switches were studied: a thermal switch of fluid motion and a thermal switch by changing the contact thermal conductance. The following results were obtained. For the thermal switch of fluid motion with the frequency 10 Hz, the thicknesses of the electrocaloric material 200 μm and the water flow channel 100 μm, the average heat transfer efficiency was 11%. For the thermal switch by changing contact thermal conductance with the frequency 1000 Hz, the thicknesses of the electrocaloric material 20 μm and the heat storage material 20 μm, the average heat transfer efficiency was 6% and the average heat flux transferred to the cold side of the system was 7 x 104 W/m2.},
 year = {2016}
}

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TY  - JOUR
T1  - Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance
AU  - Shigeki Hirasawa
AU  - Tsuyoshi Kawanami
AU  - Katsuaki Shirai
Y1  - 2016/09/19
PY  - 2016
N1  - https://doi.org/10.11648/j.ajpa.20160405.12
DO  - 10.11648/j.ajpa.20160405.12
T2  - American Journal of Physics and Applications
JF  - American Journal of Physics and Applications
JO  - American Journal of Physics and Applications
SP  - 134
EP  - 139
PB  - Science Publishing Group
SN  - 2330-4308
UR  - https://doi.org/10.11648/j.ajpa.20160405.12
AB  - Thermal performance of electrocaloric refrigeration system composed with a thin electrocaloric material and thermal switches was numerically calculated. Two types of thermal switches were studied: a thermal switch of fluid motion and a thermal switch by changing the contact thermal conductance. The following results were obtained. For the thermal switch of fluid motion with the frequency 10 Hz, the thicknesses of the electrocaloric material 200 μm and the water flow channel 100 μm, the average heat transfer efficiency was 11%. For the thermal switch by changing contact thermal conductance with the frequency 1000 Hz, the thicknesses of the electrocaloric material 20 μm and the heat storage material 20 μm, the average heat transfer efficiency was 6% and the average heat flux transferred to the cold side of the system was 7 x 104 W/m2.
VL  - 4
IS  - 5
ER  -

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Author Information

Shigeki Hirasawa

Department of Mechanical Engineering, Kobe University, Kobe, Japan
Tsuyoshi Kawanami

Department of Mechanical Engineering, Kobe University, Kobe, Japan
Katsuaki Shirai

Department of Mechanical Engineering, Kobe University, Kobe, Japan

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Plain Text BibTeX RIS

APA Style

Shigeki Hirasawa, Tsuyoshi Kawanami, Katsuaki Shirai. (2016). Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance. American Journal of Physics and Applications, 4(5), 134-139. https://doi.org/10.11648/j.ajpa.20160405.12

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ACS Style

Shigeki Hirasawa; Tsuyoshi Kawanami; Katsuaki Shirai. Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance. Am. J. Phys. Appl. 2016, 4(5), 134-139. doi: 10.11648/j.ajpa.20160405.12

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AMA Style

Shigeki Hirasawa, Tsuyoshi Kawanami, Katsuaki Shirai. Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance. Am J Phys Appl. 2016;4(5):134-139. doi: 10.11648/j.ajpa.20160405.12

Copy | Download

@article{10.11648/j.ajpa.20160405.12,
  author = {Shigeki Hirasawa and Tsuyoshi Kawanami and Katsuaki Shirai},
  title = {Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance},
  journal = {American Journal of Physics and Applications},
  volume = {4},
  number = {5},
  pages = {134-139},
  doi = {10.11648/j.ajpa.20160405.12},
  url = {https://doi.org/10.11648/j.ajpa.20160405.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpa.20160405.12},
  abstract = {Thermal performance of electrocaloric refrigeration system composed with a thin electrocaloric material and thermal switches was numerically calculated. Two types of thermal switches were studied: a thermal switch of fluid motion and a thermal switch by changing the contact thermal conductance. The following results were obtained. For the thermal switch of fluid motion with the frequency 10 Hz, the thicknesses of the electrocaloric material 200 μm and the water flow channel 100 μm, the average heat transfer efficiency was 11%. For the thermal switch by changing contact thermal conductance with the frequency 1000 Hz, the thicknesses of the electrocaloric material 20 μm and the heat storage material 20 μm, the average heat transfer efficiency was 6% and the average heat flux transferred to the cold side of the system was 7 x 104 W/m2.},
 year = {2016}
}

Copy | Download

TY  - JOUR
T1  - Thermal Performance of Electrocaloric Refrigeration using Thermal Switches of Fluid Motion and Changing Contact Conductance
AU  - Shigeki Hirasawa
AU  - Tsuyoshi Kawanami
AU  - Katsuaki Shirai
Y1  - 2016/09/19
PY  - 2016
N1  - https://doi.org/10.11648/j.ajpa.20160405.12
DO  - 10.11648/j.ajpa.20160405.12
T2  - American Journal of Physics and Applications
JF  - American Journal of Physics and Applications
JO  - American Journal of Physics and Applications
SP  - 134
EP  - 139
PB  - Science Publishing Group
SN  - 2330-4308
UR  - https://doi.org/10.11648/j.ajpa.20160405.12
AB  - Thermal performance of electrocaloric refrigeration system composed with a thin electrocaloric material and thermal switches was numerically calculated. Two types of thermal switches were studied: a thermal switch of fluid motion and a thermal switch by changing the contact thermal conductance. The following results were obtained. For the thermal switch of fluid motion with the frequency 10 Hz, the thicknesses of the electrocaloric material 200 μm and the water flow channel 100 μm, the average heat transfer efficiency was 11%. For the thermal switch by changing contact thermal conductance with the frequency 1000 Hz, the thicknesses of the electrocaloric material 20 μm and the heat storage material 20 μm, the average heat transfer efficiency was 6% and the average heat flux transferred to the cold side of the system was 7 x 104 W/m2.
VL  - 4
IS  - 5
ER  -

Copy | Download