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Heating Performance Enhancement of High Capacity PTC Heater with Modified Louver Fin for Electric Vehicles

Author

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  • Myeong Hyeon Park

    (School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si, Gyeongbuk 712-749, Korea)

  • Sung Chul Kim

    (School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si, Gyeongbuk 712-749, Korea)

Abstract

Electric vehicles use positive temperature coefficient (PTC) heaters and heat pumps to warm the vehicle cabin. High-capacity PTC heaters are needed because heat pump performance decreases sharply in the winter months due to low outdoor temperatures. The weight of PTC heaters is an important heater design factor for improving the single-charge travel distance of electric vehicles. A fin shape is necessary to improve the heater’s heat transfer performance in comparison to its weight. To develop a 6 kW class high-capacity PTC heater for electric vehicles, this study presents a numerical analysis of heat flow according to a modified louver fin’s geometric shape variables and evaluates heating performance. Based on the geometric shape of an initial plate-shaped fin prototype, a numerical analysis was performed on the width, position, height, and angle to develop a modified louver fin while considering heat transfer performance and ease of manufacturing. An improved prototype was built using the developed modified louver fin, and its heating performance under standard conditions was evaluated. The improved prototype had a heating performance of 6.05 kW, an efficiency of 98.0%, a pressure drop of 18.3 Pa, and a heating density of 3.81 kW/kg. Compared to the initial prototype, its heating performance and heating density were improved by approximately 15.7%.

Suggested Citation

  • Myeong Hyeon Park & Sung Chul Kim, 2019. "Heating Performance Enhancement of High Capacity PTC Heater with Modified Louver Fin for Electric Vehicles," Energies, MDPI, vol. 12(15), pages 1-14, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:15:p:2900-:d:252389
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    References listed on IDEAS

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    1. Chung-Won Cho & Ho-Seong Lee & Jong-Phil Won & Moo-Yeon Lee, 2012. "Measurement and Evaluation of Heating Performance of Heat Pump Systems Using Wasted Heat from Electric Devices for an Electric Bus," Energies, MDPI, vol. 5(3), pages 1-12, March.
    2. Myeong Hyeon Park & Sung Chul Kim, 2017. "Heating Performance Characteristics of High-Voltage PTC Heater for an Electric Vehicle," Energies, MDPI, vol. 10(10), pages 1-14, September.
    3. Yoon Hyuk Shin & Seung Ku Ahn & Sung Chul Kim, 2016. "Performance Characteristics of PTC Elements for an Electric Vehicle Heating System," Energies, MDPI, vol. 9(10), pages 1-9, October.
    4. Hyun Sung Kang & Seungkyu Sim & Yoon Hyuk Shin, 2018. "A Numerical Study on the Light-Weight Design of PTC Heater for an Electric Vehicle Heating System," Energies, MDPI, vol. 11(5), pages 1-15, May.
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    Cited by:

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    2. Shehryar Ishaque & Man-Hoe Kim, 2019. "Seasonal Performance Investigation for Residential Heat Pump System with Different Outdoor Heat Exchanger Designs," Energies, MDPI, vol. 12(24), pages 1-22, December.
    3. Zhichao Zhao & Lu Li & Yang Ou & Yi Wang & Shaoyang Wang & Jing Yu & Renhua Feng, 2023. "A Comparative Study on the Energy Flow of Electric Vehicle Batteries among Different Environmental Temperatures," Energies, MDPI, vol. 16(14), pages 1-15, July.
    4. Sørensen, Åse Lekang & Ludvigsen, Bjørn & Andresen, Inger, 2023. "Grid-connected cabin preheating of Electric Vehicles in cold climates – A non-flexible share of the EV energy use," Applied Energy, Elsevier, vol. 341(C).

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