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Research on the Flexible Heating Model of an Air-Source Heat Pump System in Nursery Pig Houses

Author

Listed:
  • Hua Wang

    (College of Animal Science and Technology, China Agricultural University, Beijing 100193, China)

  • Jijun Liu

    (College of Animal Science and Technology, China Agricultural University, Beijing 100193, China)

  • Zhonghong Wu

    (College of Animal Science and Technology, China Agricultural University, Beijing 100193, China)

  • Jia Liu

    (College of Animal Science and Technology, China Agricultural University, Beijing 100193, China)

  • Lu Yi

    (College of Animal Science and Technology, China Agricultural University, Beijing 100193, China)

  • Yixue Li

    (College of Animal Science and Technology, China Agricultural University, Beijing 100193, China)

  • Siqi Li

    (College of Animal Science and Technology, China Agricultural University, Beijing 100193, China)

  • Meizhi Wang

    (College of Animal Science and Technology, China Agricultural University, Beijing 100193, China)

Abstract

Maximizing the utilization of renewable energy for heating is crucial for reducing energy consumption in pig houses and enhancing energy efficiency. However, the mismatch between peak solar radiation and peak heat load demand in nursery pig houses results in energy waste. Therefore, we investigated a flexible air-source heat pump system (F-ASHP) based on the hourly-scale energy transfer of solar energy. A theoretical calculation model for F-ASHPs in pig houses in the heating areas of northern China has been established through on-site testing and Simulink. This study investigated the heat storage and release of four energy storage materials in pens and the variation in heat load in the house, validating the accuracy of the model. The results show that the F-ASHP can effectively match the peak solar heat and peak heat load in the house. Among the four energy storage materials in pens, the magnesium oxide heat storage brick material performed the best. During intermittent solar periods, it released 3319.20 kJ of heat, reducing the heat load in the pig house by 10.1% compared with that by the air-source heat pump (ASHP). This study provides a theoretical model for flexible heating calculations in pig houses in northern China and aims to serve as a valuable resource for selecting energy-storage pens.

Suggested Citation

  • Hua Wang & Jijun Liu & Zhonghong Wu & Jia Liu & Lu Yi & Yixue Li & Siqi Li & Meizhi Wang, 2023. "Research on the Flexible Heating Model of an Air-Source Heat Pump System in Nursery Pig Houses," Agriculture, MDPI, vol. 13(5), pages 1-13, May.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:5:p:1059-:d:1147448
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    References listed on IDEAS

    as
    1. Qiu Tu & Lina Zhang & Linzhang Li & Chenmian Deng & Bingjun Wang & Binquan Gu & Zhengwu Dai, 2022. "Comparison of Application Effects of Capillary Radiation Heat Pump and Electric Heating Wire in Greenhouse Seedling Cultivation," Agriculture, MDPI, vol. 12(9), pages 1-23, September.
    2. Song, Bing & Bai, Lujian & Yang, Liu, 2022. "Analysis of the long-term effects of solar radiation on the indoor thermal comfort in office buildings," Energy, Elsevier, vol. 247(C).
    3. Bansal, Pradeep & Mohabir, Amar & Miller, William, 2016. "A novel method to determine air leakage in heat pump clothes dryers," Energy, Elsevier, vol. 96(C), pages 1-7.
    Full references (including those not matched with items on IDEAS)

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