Two-phase heat conductors for passive thermal regulation systems of electric vehicles

Leonard  Vasiliev; Alexander  Zhuravlyov; Dmitry  Sadchenko

doi:10.59400/mea2052

Two-phase heat conductors for passive thermal regulation systems of electric vehicles

Leonard Vasiliev Porous Media Laboratory, A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Science of Belarus, Minsk 220072, Republic of Belarus
Alexander Zhuravlyov Porous Media Laboratory, A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Science of Belarus, Minsk 220072, Republic of Belarus
Dmitry Sadchenko Porous Media Laboratory, A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Science of Belarus, Minsk 220072, Republic of Belarus

Article ID: 2052

DOI: https://doi.org/10.59400/mea2052

Keywords: electric and hybrid vehicles; thermosyphon; double evaporator loop thermosyphon; passive thermal regulation; multi-channel evaporators; green technologies in transport

Abstract

Due to the growing demands for a better environment, great efforts are currently being made in the world to create and improve electric and hybrid vehicles. Heat-loaded equipment of electric transport requires efficient cooling systems. A loop thermosyphon made of aluminum, having two flat multi-channel evaporators and one condenser for cooling electronic components, is developed and tested with acetone as the working fluid. The procedure and results of an experimental study of the characteristics of a thermosyphon are described. The evaporators are supplied with a heat load of varying power; the absorbed heat is dissipated by the condenser. The working fluid is acetone. The influence of thermal load and volume of working fluid on the thermal resistance of a thermosyphon and its components was determined and investigated. The lowest evaporator thermal resistance is 0.15 K/W for the heat load range 30–60 W. The thermosyphon operates stably in a wide range of thermal loads and quickly responds to their changes.

Published

2025-04-09

How to Cite

Vasiliev, L., Zhuravlyov, A., & Sadchenko, D. (2025). Two-phase heat conductors for passive thermal regulation systems of electric vehicles. Mechanical Engineering Advances, 3(2), 2052. https://doi.org/10.59400/mea2052

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Issue

Vol. 3 No. 2 (2025)

Section

Article

This work is licensed under a Creative Commons Attribution 4.0 International License.

References

[1]Kendall K. Low carbon integrated vehicles and buildings. Mechanical Engineering Advances. 2024; 2(1). doi: 10.59400/mea.v2i1.282

[2]Ekici F, Orhan G, Gümüş Ö, et al. A policy on the externality problem and solution suggestions in air transportation: The environment and sustainability. Energy. 2022; 258: 124827. doi: 10.1016/j.energy.2022.124827

[3]Gan Y, Wang M, Lu Z, et al. Taking into account greenhouse gas emissions of electric vehicles for transportation de-carbonization. Energy Policy. 2021; 155: 112353. doi: 10.1016/j.enpol.2021.112353

[4]Sanguesa JA, Torres-Sanz V, Garrido P, et al. A Review on Electric Vehicles: Technologies and Challenges. Smart Cities. 2021; 4(1): 372-404. doi: 10.3390/smartcities4010022

[5]Andersen PH, Mathews JA, Rask M. Integrating private transport into renewable energy policy: The strategy of creating intelligent recharging grids for electric vehicles. Energy Policy. 2009; 37(7): 2481-2486. doi: 10.1016/j.enpol.2009.03.032

[6]Coutinho M, Afonso F, Souza A, et al. A Study on Thermal Management Systems for Hybrid–Electric Aircraft. Aerospace. 2023; 10(9): 745. doi: 10.3390/aerospace10090745

[7]Xie Y, Savvarisal A, Tsourdos A, et al. Review of hybrid electric powered aircraft, its conceptual design and energy management methodologies. Chinese Journal of Aeronautics. 2021; 34(4): 432-450. doi: 10.1016/j.cja.2020.07.017

[8]Justin CY, Payan AP, Briceno SI, et al. Power optimized battery swap and recharge strategies for electric aircraft operations. Transportation Research Part C: Emerging Technologies. 2020; 115: 102605. doi: 10.1016/j.trc.2020.02.027

[9]Tom L, Khowja M, Vakil G, et al. Commercial Aircraft Electrification—Current State and Future Scope. Energies. 2021; 14(24): 8381. doi: 10.3390/en14248381

[10]Asli M, König P, Sharma D, et al. Thermal management challenges in hybrid-electric propulsion aircraft. Progress in Aerospace Sciences. 2024; 144: 100967. doi: 10.1016/j.paerosci.2023.100967

[11]Oliveira JLG, Tecchio C, Paiva KV, et al. In-flight testing of loop thermosyphons for aircraft cooling. Applied Thermal Engineering. 2016; 98: 144-156. doi: 10.1016/j.applthermaleng.2015.12.008

[12]Vasiliev L, Zhuravlyov A, Kuzmich M, et al. Development and testing of a novel horizontal loop thermosyphon as a kW-class heat transfer device. Applied Thermal Engineering. 2022; 200: 117682. doi: 10.1016/j.applthermaleng.2021.117682

[13]Vasiliev LL, Zhuravlyov AS. Two-phase heat transfer devices for passive cooling of electric and hybrid aircraft onboard equipment. International Journal of Sustainable Aviation. 2023; 9(2): 89. doi: 10.1504/ijsa.2023.129938

[14]Vasiliev LL, Zhuravlyov AS, Kuz′mich MA, et al. Loop Thermosyphon for Cooling Heat-Loaded Electronics Components. Journal of Engineering Physics and Thermophysics. 2023; 96(7): 1708-1715. doi: 10.1007/s10891-023-02840-8

[15]Karayiannis TG, Mahmoud MM. Flow boiling in microchannels: Fundamentals and applications. Applied Thermal Engineering. 2017; 115: 1372-1397. doi: 10.1016/j.applthermaleng.2016.08.063

[16]Vargaftik NB, Vinogradov YK, Yargin VS. Handbook of physical Properties of Liquids and Gases. Pure Substances and Mixures, 3rd ed. Begel House, Inc., New York, Wallingford (UK); 1996.

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