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Design and performance of the solar-powered floor heating system in a green building

Author

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  • Zhai, X.Q.
  • Yang, J.R.
  • Wang, R.Z.

Abstract

In the green building of Shanghai Research Institute of Building Science, the evacuated tubular solar collectors with a total area of 150m2 were installed to provide heating for the covered area of 460m2. The floor heating coil pipes were made of high-quality pure copper with the dimension of Φ 12×0.7mm. Under typical weather condition of Shanghai, the average heating capacity was 25.04kW during the working hours from 9:00 to 17:00, which was sufficient to keep indoor thermal environment. The average electric COP of the floor heating system was 19.76 during the system operation. Compared with the widely used air-source heat pump heating systems with the electric COP of 3.5 in Shanghai, the solar-powered floor heating system shows great potential in energy conservation in winter. With respect to the whole heating period, the solar fraction was 56%. According to the performance analysis of the system with ambient parameters, it was observed that the system performance could be greatly enhanced with the increase of daily solar insolation. However, the system performance varied slightly with average ambient temperature. Compared with average ambient temperature, daily solar insolation had a more distinct influence on the performance of the solar-powered floor heating system.

Suggested Citation

  • Zhai, X.Q. & Yang, J.R. & Wang, R.Z., 2009. "Design and performance of the solar-powered floor heating system in a green building," Renewable Energy, Elsevier, vol. 34(7), pages 1700-1708.
    • Handle: RePEc:eee:renene:v:34:y:2009:i:7:p:1700-1708
    DOI: 10.1016/j.renene.2008.11.027
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    References listed on IDEAS

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    1. Badran, Ali A. & Hamdan, Mohammad A., 2004. "Comparative study for under-floor heating using solar collectors or solar ponds," Applied Energy, Elsevier, vol. 77(1), pages 107-117, January.
    2. Alkhalaileh, M.T. & Atieh, K.a. & Nasser, N.G. & Jubran, B.a., 1999. "Modeling and simulation of solar pond floor heating system," Renewable Energy, Elsevier, vol. 18(1), pages 1-14.
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    Cited by:

    1. Shafieian, Abdellah & Khiadani, Mehdi & Nosrati, Ataollah, 2018. "A review of latest developments, progress, and applications of heat pipe solar collectors," Renewable and Sustainable Energy Reviews, Elsevier, vol. 95(C), pages 273-304.
    2. Abdelkader Laafer & Djaffar Semmar & Abdelkader Hamid & Mahmoud Bourouis, 2021. "Thermal and Surface Radiosity Analysis of an Underfloor Heating System in a Bioclimatic Habitat," Energies, MDPI, vol. 14(13), pages 1-17, June.
    3. Caliskan, Hakan, 2015. "Thermodynamic and environmental analyses of biomass, solar and electrical energy options based building heating applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 1016-1034.
    4. Karimi, Mohammad Sadjad & Fazelpour, Farivar & Rosen, Marc A. & Shams, Mehrzad, 2019. "Comparative study of solar-powered underfloor heating system performance in distinctive climates," Renewable Energy, Elsevier, vol. 130(C), pages 524-535.

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