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Simulation Study on the Performance of an Enhanced Vapor-Injection Heat-Pump Drying System

Author

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  • Suiju Dong

    (School of Energy & Environment, Zhongyuan University of Technology, Zhengzhou 450007, China
    Zhengzhou Heating Group Co. Ltd., Zhengzhou 450052, China)

  • Yin Liu

    (School of Energy & Environment, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Zhaofeng Meng

    (School of Energy & Environment, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Saina Zhai

    (School of Energy & Environment, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Ke Hu

    (School of Energy & Environment, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Fan Zhang

    (School of Energy & Environment, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Dong Zhou

    (School of Energy & Environment, Zhongyuan University of Technology, Zhengzhou 450007, China
    Zhengzhou Heating Group Co. Ltd., Zhengzhou 450052, China)

Abstract

The performance of an enhanced vapor-injection heat-pump drying system was designed and theoretically studied in cold areas. According to the simulation findings, the ideal vapor-injection charge of the system ranges from 12.3 to 13.9%, and its ideal intermediate pressure is between 1.278 and 1.498 MPa when the evaporation temperature is above 0 °C. The ideal vapor-injection charge of the system ranges from 13 to 20%, and its optimal intermediate pressure ranges from 1.078 to 1.278 MPa when the evaporation temperature is −15–0 °C. The ideal vapor-injection charge of the system ranges from 20 to 24%, and the intermediate pressure ranges from 0.898 to 1.078 MPa when the evaporation temperature is below −15 °C. The heat and humidity exhausted air source heat-pump drying (HHE–ASHPD) system has higher dehumidification efficiency than the closed heat-pump drying (CHPD) system under the same air temperature, humidity, and volume parameters.

Suggested Citation

  • Suiju Dong & Yin Liu & Zhaofeng Meng & Saina Zhai & Ke Hu & Fan Zhang & Dong Zhou, 2022. "Simulation Study on the Performance of an Enhanced Vapor-Injection Heat-Pump Drying System," Energies, MDPI, vol. 15(24), pages 1-14, December.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:24:p:9542-:d:1005122
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    References listed on IDEAS

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    2. Chua, K.J. & Chou, S.K. & Yang, W.M., 2010. "Advances in heat pump systems: A review," Applied Energy, Elsevier, vol. 87(12), pages 3611-3624, December.
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