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An experimental investigation on reverse-cycle defrosting performance for an air source heat pump using an electronic expansion valve

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  • Qu, Minglu
  • Xia, Liang
  • Deng, Shiming
  • Jiang, Yiqiang

Abstract

When an air source heat pump (ASHP) operates in heating mode, frost can be accumulated on the surface of its finned outdoor coil. Frosting deteriorates the operation and energy efficiency of the ASHP and periodic defrosting becomes necessary. Currently the most widely used standard defrosting method for ASHPs is reverse cycle defrost. On the other hand, electronic expansion valves (EEVs) are commonly used in heat pump/refrigeration systems, including ASHP units, as throttle regulators of refrigerant flow.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:appene:v:97:y:2012:i:c:p:327-333
    DOI: 10.1016/j.apenergy.2011.11.057
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    References listed on IDEAS

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    1. Choi, J.M & Kim, Y.C, 2002. "The effects of improper refrigerant charge on the performance of a heat pump with an electronic expansion valve and capillary tube," Energy, Elsevier, vol. 27(4), pages 391-404.
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    Cited by:

    1. Yang, Seung-Hwan & Rhee, Joong Yong, 2013. "Utilization and performance evaluation of a surplus air heat pump system for greenhouse cooling and heating," Applied Energy, Elsevier, vol. 105(C), pages 244-251.
    2. Long, Zhang & Jiankai, Dong & Yiqiang, Jiang & Yang, Yao, 2014. "A novel defrosting method using heat energy dissipated by the compressor of an air source heat pump," Applied Energy, Elsevier, vol. 133(C), pages 101-111.
    3. She, Xiaohui & Cong, Lin & Nie, Binjian & Leng, Guanghui & Peng, Hao & Chen, Yi & Zhang, Xiaosong & Wen, Tao & Yang, Hongxing & Luo, Yimo, 2018. "Energy-efficient and -economic technologies for air conditioning with vapor compression refrigeration: A comprehensive review," Applied Energy, Elsevier, vol. 232(C), pages 157-186.
    4. 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.
    5. Rong, Xiangyang & Long, Weiguo & Jia, Jikang & Liu, Lianhua & Si, Pengfei & Shi, Lijun & Yan, Jinyue & Liu, Boran & Zhao, Mishen, 2023. "Experimental study on a multi-evaporator mutual defrosting system for air source heat pumps," Applied Energy, Elsevier, vol. 332(C).
    6. Gong, Guangcai & Tang, Jinchen & Lv, Dongyan & Wang, Hongjin, 2013. "Research on frost formation in air source heat pump at cold-moist conditions in central-south China," Applied Energy, Elsevier, vol. 102(C), pages 571-581.
    7. Amer, Mohammed & Wang, Chi-Chuan, 2017. "Review of defrosting methods," Renewable and Sustainable Energy Reviews, Elsevier, vol. 73(C), pages 53-74.
    8. Yang, Bowen & Dong, Jiankai & Zhang, Long & Song, Mengjie & Jiang, Yiqiang & Deng, Shiming, 2019. "Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting," Applied Energy, Elsevier, vol. 238(C), pages 303-310.
    9. Song, Mengjie & Pan, Dongmei & Li, Ning & Deng, Shiming, 2015. "An experimental study on the negative effects of downwards flow of the melted frost over a multi-circuit outdoor coil in an air source heat pump during reverse cycle defrosting," Applied Energy, Elsevier, vol. 138(C), pages 598-604.
    10. 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).
    11. Qinghong Peng & Qungui Du, 2016. "Progress in Heat Pump Air Conditioning Systems for Electric Vehicles—A Review," Energies, MDPI, vol. 9(4), pages 1-17, March.
    12. Tan, Haihui & Xu, Guanghua & Tao, Tangfei & Sun, Xiaoqi & Yao, Wudong, 2015. "Experimental investigation on the defrosting performance of a finned-tube evaporator using intermittent ultrasonic vibration," Applied Energy, Elsevier, vol. 158(C), pages 220-232.
    13. Wang, Wei & Zhang, Shiqiang & Li, Zhaoyang & Sun, Yuying & Deng, Shiming & Wu, Xu, 2020. "Determination of the optimal defrosting initiating time point for an ASHP unit based on the minimum loss coefficient in the nominal output heating energy," Energy, Elsevier, vol. 191(C).

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