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Parametric study of a room air conditioner during defrosting cycle based on a modified defrosting model

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  • Han, Binglong
  • Xiong, Tong
  • Xu, Shijie
  • Liu, Guoqiang
  • Yan, Gang

Abstract

Reverse cycle defrosting is widely used in room air conditioner (RAC) system. The objective of this study is to investigate system transients during defrosting from a numerical simulation perspective and provide control guidance for maximizing defrosting performance without wet compression. For this purpose, a system-level defrosting model for RAC system is developed in line with its practical application. A modified first-principle hot gas defrosting model is developed to eliminate the mass non-conservation error. Model validation against experimental data demonstrates the model could predict the system transients within reasonable accuracy. Wet compression during defrosting under basic control strategy is captured in the simulation and experiments. The model is applied to evaluate the effect of compressor frequency and electronic expansion valve (EEV) opening on defrosting. The results show that wet compression could be eliminated by decreasing EEV opening. The compressor frequency has little impact on the time point when wet compression occurs, however, it could weaken wet compression by reducing defrosting duration. Based on the operation maps, the EEV opening and compressor frequency are recommended in the range of 40–60 % and 70–90 Hz, respectively, which could guarantee safe compression with short defrosting duration and low energy consumption.

Suggested Citation

  • Han, Binglong & Xiong, Tong & Xu, Shijie & Liu, Guoqiang & Yan, Gang, 2022. "Parametric study of a room air conditioner during defrosting cycle based on a modified defrosting model," Energy, Elsevier, vol. 238(PA).
    • Handle: RePEc:eee:energy:v:238:y:2022:i:pa:s036054422101906x
    DOI: 10.1016/j.energy.2021.121658
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    References listed on IDEAS

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    1. Song, Mengjie & Deng, Shiming & Xia, Liang, 2014. "A semi-empirical modeling study on the defrosting performance for an air source heat pump unit with local drainage of melted frost from its three-circuit outdoor coil," Applied Energy, Elsevier, vol. 136(C), pages 537-547.
    2. Song, Mengjie & Deng, Shiming & Dang, Chaobin & Mao, Ning & Wang, Zhihua, 2018. "Review on improvement for air source heat pump units during frosting and defrosting," Applied Energy, Elsevier, vol. 211(C), pages 1150-1170.
    3. Mahlia, T.M.I. & Saidur, R., 2010. "A review on test procedure, energy efficiency standards and energy labels for room air conditioners and refrigerator-freezers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(7), pages 1888-1900, September.
    4. Wu, Jianghong & Liu, Chaopeng & Li, Hongqi & Ouyang, Dong & Cheng, Jianhong & Wang, Yuanxia & You, Shaofang, 2017. "Residential air-conditioner usage in China and efficiency standardization," Energy, Elsevier, vol. 119(C), pages 1036-1046.
    5. Choi, Hwan-Jong & Kim, Byung-Soon & Kang, Donghoon & Kim, Kyung Chun, 2011. "Defrosting method adopting dual hot gas bypass for an air-to-air heat pump," Applied Energy, Elsevier, vol. 88(12), pages 4544-4555.
    6. Qu, Minglu & Pan, Dongmei & Xia, Liang & Deng, Shiming & Jiang, Yiqiang, 2012. "A study of the reverse cycle defrosting performance on a multi-circuit outdoor coil unit in an air source heat pump – Part II: Modeling analysis," Applied Energy, Elsevier, vol. 91(1), pages 274-280.
    7. Qu, Minglu & Xia, Liang & Deng, Shiming & Jiang, Yiqiang, 2012. "A study of the reverse cycle defrosting performance on a multi-circuit outdoor coil unit in an air source heat pump – Part I: Experiments," Applied Energy, Elsevier, vol. 91(1), pages 122-129.
    8. Li, Xianting & Lyu, Weihua & Ran, Siyuan & Wang, Baolong & Wu, Wei & Yang, Zixu & Jiang, Sihang & Cui, Mengdi & Song, Pengyuan & You, Tian & Shi, Wenxing, 2020. "Combination principle of hybrid sources and three typical types of hybrid source heat pumps for year-round efficient operation," Energy, Elsevier, vol. 193(C).
    9. Qu, Minglu & Xia, Liang & Deng, Shiming & Jiang, Yiqiang, 2012. "An experimental investigation on reverse-cycle defrosting performance for an air source heat pump using an electronic expansion valve," Applied Energy, Elsevier, vol. 97(C), pages 327-333.
    10. Wang, Dandong & Zhang, Zhenyu & Yu, Binbin & Wang, Xinnan & Shi, Junye & Chen, Jiangping, 2019. "Experimental research on charge determination and accumulator behavior in trans-critical CO2 mobile air-conditioning system," Energy, Elsevier, vol. 183(C), pages 106-115.
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    Cited by:

    1. Chen, Siliang & Chen, Kang & Zhu, Xu & Jin, Xinqiao & Du, Zhimin, 2022. "Deep learning-based image recognition method for on-demand defrosting control to save energy in commercial energy systems," Applied Energy, Elsevier, vol. 324(C).
    2. Ma, Jiacheng & Kim, Donghun & Braun, James E. & Horton, W. Travis, 2023. "Development and validation of a dynamic modeling framework for air-source heat pumps under cycling of frosting and reverse-cycle defrosting," Energy, Elsevier, vol. 272(C).

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