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Model establishment and operation optimization of the casing PCM radiant floor heating system

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  • Lu, Shilei
  • Gao, Jingxian
  • Tong, Haojie
  • Yin, Shuai
  • Tang, Xiaolei
  • Jiang, Xiangyang

Abstract

In this study, a new two-dimensional model of CPRF was developed in TRNSYS. Its accuracy was validated by a full-scale experiment. The effects of key parameters of CPRF coupled with solar water heating system on indoor temperature was analyzed. The single factor analysis revealed that reducing tube pitch and solidification temperature, increasing PCM layer thickness and solar collector area could increase indoor temperature. The orthogonal test analysis indicated that tube pitch has the greatest impact on the average indoor temperature. The CPRF heating system coupled to solar energy and an electric boiler operating on valley electricity (CSSEBV) was proposed to ensure stable heating. It was optimized by GENOPT. The optimal parameters are that the tube pitch is 0.28 m, the PCM layer thickness is 0.02 m, the solar collector area is 12.5 m2 and the operating time of the electric boiler is 2h. The economy, energy saving property and environmental benefits of four systems were also compared and analyzed.

Suggested Citation

  • Lu, Shilei & Gao, Jingxian & Tong, Haojie & Yin, Shuai & Tang, Xiaolei & Jiang, Xiangyang, 2020. "Model establishment and operation optimization of the casing PCM radiant floor heating system," Energy, Elsevier, vol. 193(C).
    • Handle: RePEc:eee:energy:v:193:y:2020:i:c:s0360544219325095
    DOI: 10.1016/j.energy.2019.116814
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    References listed on IDEAS

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    Cited by:

    1. Larwa, Barbara & Cesari, Silvia & Bottarelli, Michele, 2021. "Study on thermal performance of a PCM enhanced hydronic radiant floor heating system," Energy, Elsevier, vol. 225(C).
    2. Zhou, Yuekuan, 2022. "Demand response flexibility with synergies on passive PCM walls, BIPVs, and active air-conditioning system in a subtropical climate," Renewable Energy, Elsevier, vol. 199(C), pages 204-225.
    3. Mousavi, Seyedmostafa & Rismanchi, Behzad & Brey, Stefan & Aye, Lu, 2021. "PCM embedded radiant chilled ceiling: A state-of-the-art review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 151(C).
    4. Klimeš, Lubomír & Charvát, Pavel & Mastani Joybari, Mahmood & Zálešák, Martin & Haghighat, Fariborz & Panchabikesan, Karthik & El Mankibi, Mohamed & Yuan, Yanping, 2020. "Computer modelling and experimental investigation of phase change hysteresis of PCMs: The state-of-the-art review," Applied Energy, Elsevier, vol. 263(C).
    5. Xie, Xing & Xu, Bin & Cheng, Yuan-xia & Pei, Gang, 2023. "New method of integrating experiment for maintaining low indoor temperature into numerical modelling: A feasibility demonstration in reduced-scale building model," Energy, Elsevier, vol. 284(C).

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