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Experimental and theoretical study on a solar assisted CO2 heat pump for space heating

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  • Chen, J.F.
  • Dai, Y.J.
  • Wang, R.Z.

Abstract

In this paper, a solar combi-system which consists of solar collector and a CO2 heat pump is investigated experimentally and theoretically. Two experiments are primarily conducted to show the performance of this solar combi-system under different operation conditions. A system model is developed and validated in TRNSYS to analyze the influence of main components parameters. Subsequently, a multi-parameter optimization is carried out in GENOPT to obtain a final optimal result. The simulated results show that the optimized system can save 14.2% electricity and improve the solar fraction by 8%. The solar fraction of the optimized system can reach 71.1%. Finally, the optimized system performance is studied with the weather and load characteristics in Shanghai. Compared with the CO2 HP heating system alone, the solar assisted system can save 1790.8 kWh electricity on the basis of year round operation.

Suggested Citation

  • Chen, J.F. & Dai, Y.J. & Wang, R.Z., 2016. "Experimental and theoretical study on a solar assisted CO2 heat pump for space heating," Renewable Energy, Elsevier, vol. 89(C), pages 295-304.
    • Handle: RePEc:eee:renene:v:89:y:2016:i:c:p:295-304
    DOI: 10.1016/j.renene.2015.12.039
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    References listed on IDEAS

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    1. Kim, Wonseok & Choi, Jongmin & Cho, Honghyun, 2013. "Performance analysis of hybrid solar-geothermal CO2 heat pump system for residential heating," Renewable Energy, Elsevier, vol. 50(C), pages 596-604.
    2. Yokoyama, Ryohei & Wakui, Tetsuya & Kamakari, Junya & Takemura, Kazuhisa, 2010. "Performance analysis of a CO2 heat pump water heating system under a daily change in a standardized demand," Energy, Elsevier, vol. 35(2), pages 718-728.
    3. Zhang, Jian-Fei & Qin, Yan & Wang, Chi-Chuan, 2015. "Review on CO2 heat pump water heater for residential use in Japan," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 1383-1391.
    4. Ma, Yitai & Liu, Zhongyan & Tian, Hua, 2013. "A review of transcritical carbon dioxide heat pump and refrigeration cycles," Energy, Elsevier, vol. 55(C), pages 156-172.
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    Cited by:

    1. Jia, Teng & Dai, Yanjun & Wang, Ruzhu, 2018. "Refining energy sources in winemaking industry by using solar energy as alternatives for fossil fuels: A review and perspective," Renewable and Sustainable Energy Reviews, Elsevier, vol. 88(C), pages 278-296.
    2. Ma, Juanli & Fung, Alan S. & Brands, Monica & Abul Moyeed, Osama Mohammad & Mhanna, Ahmad & Juan, Neil, 2021. "Effects of photovoltaic/thermal (PV/T) control strategies on the performance of liquid-based PV/T assisted heat pump for space heating," Renewable Energy, Elsevier, vol. 172(C), pages 753-764.
    3. Rajib Uddin Rony & Huojun Yang & Sumathy Krishnan & Jongchul Song, 2019. "Recent Advances in Transcritical CO 2 (R744) Heat Pump System: A Review," Energies, MDPI, vol. 12(3), pages 1-35, January.
    4. Liu, Zhijian & Liu, Yuanwei & He, Bao-Jie & Xu, Wei & Jin, Guangya & Zhang, Xutao, 2019. "Application and suitability analysis of the key technologies in nearly zero energy buildings in China," Renewable and Sustainable Energy Reviews, Elsevier, vol. 101(C), pages 329-345.
    5. Menegon, Diego & Persson, Tomas & Haberl, Robert & Bales, Chris & Haller, Michel, 2020. "Direct characterisation of the annual performance of solar thermal and heat pump systems using a six-day whole system test," Renewable Energy, Elsevier, vol. 146(C), pages 1337-1353.
    6. Wang, Xinru & Xia, Liang & Bales, Chris & Zhang, Xingxing & Copertaro, Benedetta & Pan, Song & Wu, Jinshun, 2020. "A systematic review of recent air source heat pump (ASHP) systems assisted by solar thermal, photovoltaic and photovoltaic/thermal sources," Renewable Energy, Elsevier, vol. 146(C), pages 2472-2487.
    7. Mohanraj, M. & Belyayev, Ye. & Jayaraj, S. & Kaltayev, A., 2018. "Research and developments on solar assisted compression heat pump systems – A comprehensive review (Part A: Modeling and modifications)," Renewable and Sustainable Energy Reviews, Elsevier, vol. 83(C), pages 90-123.
    8. Chen, J.F. & Zhang, L. & Dai, Y.J., 2018. "Performance analysis and multi-objective optimization of a hybrid photovoltaic/thermal collector for domestic hot water application," Energy, Elsevier, vol. 143(C), pages 500-516.
    9. Ge, T.S. & Wang, R.Z. & Xu, Z.Y. & Pan, Q.W. & Du, S. & Chen, X.M. & Ma, T. & Wu, X.N. & Sun, X.L. & Chen, J.F., 2018. "Solar heating and cooling: Present and future development," Renewable Energy, Elsevier, vol. 126(C), pages 1126-1140.
    10. Besagni, Giorgio & Croci, Lorenzo & Nesa, Riccardo & Molinaroli, Luca, 2019. "Field study of a novel solar-assisted dual-source multifunctional heat pump," Renewable Energy, Elsevier, vol. 132(C), pages 1185-1215.
    11. Herez, Amal & Ramadan, Mohamad & Khaled, Mahmoud, 2018. "Review on solar cooker systems: Economic and environmental study for different Lebanese scenarios," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 421-432.
    12. Liu, Yanfeng & Zhao, Yiting & Chen, Yaowen & Wang, Dengjia & Li, Yong & Yuan, Xipeng, 2022. "Design optimization of the solar heating system for office buildings based on life cycle cost in Qinghai-Tibet plateau of China," Energy, Elsevier, vol. 246(C).

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    Keywords

    Solar heating; CO2 heat pump; Solar energy; Optimization;
    All these keywords.

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