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Characteristic analysis and performance optimization of a transcritical CO2 heat pump for high-temperature heating: An experimental study

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  • Yang, Lingxiao
  • Wang, Xin
  • Xu, Bo
  • Chen, Zhenqian

Abstract

Based on the improved experiment, a study on the characterization and optimization of transcritical CO2 heat pumps for high-temperature heating is conducted through the combined analysis perspective of thermal quality and heat capacity, as well as the proposed indicator. The result shows that: In the heat transfer process of the gas cooler, the thermal quality of CO2 is closely related to the variation of discharge pressure and compression ratio, and the temperature rise of water shows a corresponding three stages; An increase in the heating temperature (th) requires a higher level of thermal quality on the CO2 side, which exacerbates the heat capacity mismatch in the gas cooler; The elevated compressor speed (ncom) can effectively alleviate this mismatch, but an excessive ncom can instead cause a reduction in system COP; In the study, the COP of the system is improved by up to 26.12 % by optimizing the throttle opening benchmark, and it is further enhanced by up to 19.91 % through the synergistic control strategy optimization; Consequently, the optimized COP can be obtained 2.204 when the required th is 100 °C; Furthermore, the introduction of IHX significantly benefits the high-temperature heating performance of the system and the COP lifting studied ranges 3.70%–14.12 %.

Suggested Citation

  • Yang, Lingxiao & Wang, Xin & Xu, Bo & Chen, Zhenqian, 2024. "Characteristic analysis and performance optimization of a transcritical CO2 heat pump for high-temperature heating: An experimental study," Renewable Energy, Elsevier, vol. 237(PB).
    • Handle: RePEc:eee:renene:v:237:y:2024:i:pb:s0960148124017865
    DOI: 10.1016/j.renene.2024.121718
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    References listed on IDEAS

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    1. Wu, Jinxing & Sun, Shoujun & Song, Qinglu & Sun, Dandan & Wang, Dechang & Li, Jiaxu, 2023. "Energy, exergy, exergoeconomic and environmental (4E) analysis of cascade heat pump, recuperative heat pump and carbon dioxide heat pump with different temperature lifts," Renewable Energy, Elsevier, vol. 207(C), pages 407-421.
    2. Baek, Changhyun & Heo, Jaehyeok & Jung, Jongho & Cho, Honghyun & Kim, Yongchan, 2014. "Performance characteristics of a two-stage CO2 heat pump water heater adopting a sub-cooler vapor injection cycle at various operating conditions," Energy, Elsevier, vol. 77(C), pages 570-578.
    3. Ge, T.S. & Weng, Z.C. & Huang, R. & Hu, B. & Eikevik, Trygve Magne & Dai, Y.J., 2023. "High temperature transcritical CO2 heat pump with optimized tube-in-tube heat exchanger," Energy, Elsevier, vol. 283(C).
    4. Zendehboudi, Alireza, 2024. "Optimal discharge pressure and performance characteristics of a transcritical CO2 heat pump system with a tri-partite gas cooler for combined space and water heating," Renewable Energy, Elsevier, vol. 226(C).
    5. Men, Yiyu & Liu, Xiaohua & Zhang, Tao, 2021. "A review of boiler waste heat recovery technologies in the medium-low temperature range," Energy, Elsevier, vol. 237(C).
    6. Nguyen, A. & Elsami-Nejad, P., 2019. "A transient coupled model of a variable speed transcritical CO2 direct expansion ground source heat pump for space heating and cooling," Renewable Energy, Elsevier, vol. 140(C), pages 1012-1021.
    7. Qin, Xiang & Shen, Aoqi & Duan, Hongxin & Wang, Guanghui & Chen, Jiaheng & Tang, Songzhen & Wang, Dingbiao, 2024. "Experimental verification of the novel transcritical CO2 heat pump system and model evaluation method," Renewable Energy, Elsevier, vol. 222(C).
    8. Hou, Yaxiang & Wu, Weidong & Li, Zhenbo & Yu, Xinyi & Zeng, Tao, 2023. "Effect of drying air supply temperature and internal heat exchanger on performance of a novel closed-loop transcritical CO2 air source heat pump drying system," Renewable Energy, Elsevier, vol. 219(P2).
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