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High-Efficiency HVAC System with Defog/Dehumidification Function for Electric Vehicles

Author

Listed:
  • Tong-Bou Chang

    (Department of Mechanical and Energy Engineering, National Chiayi University, Chiayi 60003, Taiwan)

  • Jer-Jia Sheu

    (Department of Mechanical Engineering, Southern Taiwan University of Science and Technology, Tainan 71005, Taiwan)

  • Jhong-Wei Huang

    (Department of Mechanical Engineering, Southern Taiwan University of Science and Technology, Tainan 71005, Taiwan)

Abstract

Electric vehicles (EVs) generally use an electric heating system to provide heat. However, the heating system consumes a large amount of energy, and therefore reduces the mileage of the vehicle. The energy consumption can be reduced by replacing the electric heating system with a heat pump air conditioning system. Such systems achieve an effective heating of the vehicle interior, but do not provide a defog or dehumidification function. Consequently, the inside surface of the windshield tends to fog in cold weather; leading to poor driver visibility and an impaired road safety. Accordingly, the present study proposes a novel high-efficiency heating, ventilation and air conditioning (HVAC) system with both heating and defog/dehumidification functions for electric vehicles. The effectiveness of the proposed system is investigated experimentally using a simulated cabin placed in a temperature and humidity-controlled test chamber. The experimental results confirm that the HVAC system achieves the required cooling, heating and defog/dehumidification functions and meets the corresponding standards. Moreover, the application of HVAC in EVs could lead to significant electrical power saving effect.

Suggested Citation

  • Tong-Bou Chang & Jer-Jia Sheu & Jhong-Wei Huang, 2020. "High-Efficiency HVAC System with Defog/Dehumidification Function for Electric Vehicles," Energies, MDPI, vol. 14(1), pages 1-12, December.
    • Handle: RePEc:gam:jeners:v:14:y:2020:i:1:p:46-:d:467359
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    References listed on IDEAS

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