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Design and Thermal Analysis of an Air Source Heat Pump Dryer for Food Drying

Author

Listed:
  • Haolu Liu

    (College of Engineering, Nanjing Agricultural University, Nanjing 210031, Jiangsu, China)

  • Khurram Yousaf

    (College of Engineering, Nanjing Agricultural University, Nanjing 210031, Jiangsu, China)

  • Kunjie Chen

    (College of Engineering, Nanjing Agricultural University, Nanjing 210031, Jiangsu, China)

  • Rui Fan

    (College of Engineering, Nanjing Agricultural University, Nanjing 210031, Jiangsu, China)

  • Jiaxin Liu

    (College of Engineering, Nanjing Agricultural University, Nanjing 210031, Jiangsu, China)

  • Shakeel Ahmed Soomro

    (College of Engineering, Nanjing Agricultural University, Nanjing 210031, Jiangsu, China)

Abstract

In this study, an experimental heat pump dryer was designed. The specific moisture extraction rate and moisture extraction rate were used as performance indicators to explore the influence of environmental factors and the style of the hot air cycle on heat pump drying. The average temperature and humidity in Nanjing’s summer, winter, and throughout the whole year were taken as the experimental ambient temperature and humidity. Garlic slices 3 mm thick, with an initial moisture content of 66.714% w.b., were dried until the end moisture content was 10% w.b. Experimental results and thermal analysis showed that the open and semi-open heat pump dryers were greatly affected by ambient temperature and humidity. The closed heat pump drying system was greatly affected by the bypass air rate.

Suggested Citation

  • Haolu Liu & Khurram Yousaf & Kunjie Chen & Rui Fan & Jiaxin Liu & Shakeel Ahmed Soomro, 2018. "Design and Thermal Analysis of an Air Source Heat Pump Dryer for Food Drying," Sustainability, MDPI, vol. 10(9), pages 1-17, September.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:9:p:3216-:d:168602
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    References listed on IDEAS

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    1. Xiaoqing Wei & Nianping Li & Jinqing Peng & Jianlin Cheng & Lin Su & Jinhua Hu, 2016. "Analysis of the Effect of the CaCl 2 Mass Fraction on the Efficiency of a Heat Pump Integrated Heat-Source Tower Using an Artificial Neural Network Model," Sustainability, MDPI, vol. 8(5), pages 1-14, April.
    2. Song, Mengjie & Xia, Liang & Mao, Ning & Deng, Shiming, 2016. "An experimental study on even frosting performance of an air source heat pump unit with a multi-circuit outdoor coil," Applied Energy, Elsevier, vol. 164(C), pages 36-44.
    3. Song, Mengjie & Deng, Shiming & Mao, Ning & Ye, Xianming, 2016. "An experimental study on defrosting performance for an air source heat pump unit with a horizontally installed multi-circuit outdoor coil," Applied Energy, Elsevier, vol. 165(C), pages 371-382.
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    Cited by:

    1. Hao, Wengang & Zhang, Han & Liu, Shuonan & Mi, Baoqi & Lai, Yanhua, 2021. "Mathematical modeling and performance analysis of direct expansion heat pump assisted solar drying system," Renewable Energy, Elsevier, vol. 165(P1), pages 77-87.
    2. Ya Yuan & Wenye Lin & Xiang Mao & Weizhao Li & Luwei Yang & Juan Wei & Bo Xiao, 2019. "Performance Analysis of Heat Pump Dryer with Unit-Room in Cold Climate Regions," Energies, MDPI, vol. 12(16), pages 1-18, August.
    3. Chan-González Jorge de Jesús & Castillo Téllez Margarita & Castillo-Téllez Beatriz & Lezama-Zárraga Francisco Román & Mejía-Pérez Gerardo Alberto & Vega-Gómez Carlos Jesahel, 2021. "Improvements and Evaluation on Bitter Orange Leaves ( Citrus aurantium L.) Solar Drying in Humid Climates," Sustainability, MDPI, vol. 13(16), pages 1-17, August.
    4. Arley Salazar-Hincapié & Alvaro Delgado-Mejía & Andrés Felipe Romero-Maya & Eduardo Duque-Grisales, 2020. "Experimental Assessment of the Thermal Performance of a Heat Pump Dryer System Based on the Variations in Compressor Discharge Pressure on Oregano Drying," Energies, MDPI, vol. 13(23), pages 1-14, December.

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