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Numerical Analysis of Wick-Type Two-Phase Mechanically Pumped Fluid Loop for Thermal Control of Electric Aircraft Motors

Author

Listed:
  • Xinyu Chang

    (Institute of Fluid Science, Tohoku University, Sendai 9808577, Japan)

  • Koji Fujita

    (Institute of Fluid Science, Tohoku University, Sendai 9808577, Japan)

  • Hiroki Nagai

    (Institute of Fluid Science, Tohoku University, Sendai 9808577, Japan)

Abstract

The development of thermal control systems has become an important issue in next-generation electric aircraft design due to the increase in heat exhausted with electrification. In this paper, a wick-type two-phase mechanically pumped fluid loop system for future electric aircraft was proposed through the investigation of current two-phase flow cooling technology. Taking the experimental electric aircraft X-57 as an example, a wick-type two-phase mechanically pumped fluid loop with four evaporators for transporting 12 kW of waste heat within an 80 °C temperature limit was proposed and its feasibility was confirmed. A numerical model was constructed and validated to predict the operating characteristics of a two-phase mechanically pumped fluid loop. The optimal pump outputs under-even and uneven heat load conditions and was investigated for the first time by considering the vapor-liquid separation conditions in each flow path and the power consumption of the pump. Under the optimal pump output condition, the operating characteristics of the wick-type two-phase mechanically pumped fluid loop system were calculated. The calculation results indicate that the proposed wick-type two-phase mechanically pumped fluid loop is suitable as the thermal control system for an X-57 electric aircraft motor, as the calculation results satisfied the operational requirements of the motor.

Suggested Citation

  • Xinyu Chang & Koji Fujita & Hiroki Nagai, 2022. "Numerical Analysis of Wick-Type Two-Phase Mechanically Pumped Fluid Loop for Thermal Control of Electric Aircraft Motors," Energies, MDPI, vol. 15(5), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1800-:d:761134
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    References listed on IDEAS

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    1. David C. Deisenroth & Michael Ohadi, 2019. "Thermal Management of High-Power Density Electric Motors for Electrification of Aviation and Beyond," Energies, MDPI, vol. 12(19), pages 1-18, September.
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