Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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Thermal analysis model for electric water pumps with non-conductive cooling liquid

비전도성 충진액을 포함하는 전동워터펌프 열 해석 모델

  • Received : 2022.06.15
  • Accepted : 2022.06.30
  • Published : 2022.06.30
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Abstract

As the consumer market in the eco-friendly vehicle industry grows, the demand for water pump in a electric car parts market. This study intend to propose a mathematical model that can verify the effect of improving thermal properties when a non-conductive cooling filler liquid is introduced into an electric vehicle water pump. Also, the pros and cons of the immersion cooling method and future development way were suggested by analyzing the cooling characteristics using on the derived analysis solution. Thermal characteristics analysis of electric water pump applied with non-conductive filler liquid was carried out, and the diffusion boundary condition in the motor body and the boundary condition the inside pump were expressed as a geometric model. As a result of analyzing the temperature change for the heat source of the natural convection method and the heat conduction method, the natural convection method has difficulty in dissipating heat because no decrease in temperature due to heat release was found even after 300 sec. Also, it can be seen that the heat dissipation effect was obtained even though the non-conductive filling liquid was applied at the 120 sec and 180 sec in the heat conduction method. It has proposed to minimize thermal embrittlement and lower motor torque by injecting a non-conductive filler liquid into the motor body and designing a partition wall thickness of 2.5 mm or less.

Keywords

Acknowledgement

본 연구는 산업기술평가관리원 글로벌주력산업 품질대응 뿌리개발사업 (20011588)의 지원으로 진행되었으며 이에 깊은 감사를 드립니다.

References

  1. Yoo Ra Choi, Young Hyeon Kim, Sang Seok Yu, "Experiment on Heat Dissipation Characteristics of Electric Water Pump Housing Under Various Loads", Transactions of the Korean Society of Automotive Engineers, Vol. 29, No. 3, pp. 243-249, 2021. https://doi.org/10.7467/KSAE.2021.29.3.243
  2. Gee Soo Lee, Hyung Seok Heo, Hyun Chul Kim, Chang Bok Oh, "Effects of the Balance Hole Diameter of an Automotive Closed Type Water Pump on Hydraulic Performance and Axial Force", Transactions of the Korean Society of Automotive Engineers, Vol. 16, No. 3, pp. 111-117, 2008.
  3. Braunstein, A., and Kornfeld, A., "Analysis of solar powered electric water pumps", Solar Energy, Vol. 27 No. 3, pp. 235-240, 1981. https://doi.org/10.1016/0038-092X(81)90124-9
  4. Yoon Hyuk Shin, Sung Chul Kim and Min Soo Kim, "Use of electromagnetic clutch water pumps in vehicle engine cooling systems to reduce fuel consumption", Energy, Vol. 57, No. 1 pp. 624-631, 2013. https://doi.org/10.1016/j.energy.2013.04.073
  5. Sean Jhin Yoon, Yong Moo Cho, "Redistribution of Vacancy Concentration in Metal Specimens under Stress-induced Diffusion at a High Temperature", J. Korea Society of Die & Mold Engineering Vol. 12, No.1, pp. 1-6, 2018.
  6. David Farrusseng, Cecile Daniel, Conor Hamill, Jose Casaban, Casaban, Terje Didriksen, Didriksen, Andreas Velte, Blom, Gerrit Fueldner, Paul Gantenbein, Patrick Persdorf, Xavier Daguenet Fricke and Francis Meunierf, "Adsorber heat exchanger using Al-fumarate beads for heat-pump applications a transport study", Faraday Discussions, Vol. 225, pp. 384-402, 2021. https://doi.org/10.1039/D0FD00009D
  7. Cengel, Yunus A., and Afshin J. Ghajar. "Heat exchangers", Heat and Mass Transfer: A Practical Approach, 3rd ed.; McGraw-Hill Education: New York, NY, USA, Chapter 4, 2007.
  8. Incropera, F. P., DeWitt, D. P., Bergman, T. L., and Lavine, A. S., "Fundamentals of heat and mass transfer", New York: Wiley, 6 Edition, Chapter 4 pp. 202-206, 2005.