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Analysis and experimental verification of an improved cooling radiator

Author

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  • Erell, E.
  • Etzion, Y.

Abstract

Roof ponds cooled by nocturnal long wave radiation have often been proposed as a cheap and effective means of providing thermal comfort in buildings in hot-arid locations. Many of the schemes incorporate flat-plate radiators through which the water is circulated at night to be cooled. This paper analyzes the parameters affecting the performance of such a radiator, specifically designed for nocturnal radiative cooling. A cheap, simple and flexible design for a cooling radiator was suggested as a result of the analysis, and tested at the experimental facilities of the Center for Desert Architecture at Sede-Boqer, Israel. The mean nightly cooling output of the radiator - due to the combined effect of radiation and convection - was over 90 watts/m2 under typical desert meteorological conditions. The analytical model adapted for this application allows accurate calculation of the fluid temperature at the outlet of the radiator, as a function of the properties of the radiator, the meteorological conditions and the operating parameters of the cooling system.

Suggested Citation

  • Erell, E. & Etzion, Y., 1999. "Analysis and experimental verification of an improved cooling radiator," Renewable Energy, Elsevier, vol. 16(1), pages 700-703.
    • Handle: RePEc:eee:renene:v:16:y:1999:i:1:p:700-703
    DOI: 10.1016/S0960-1481(98)00255-9
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    Citations

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    Cited by:

    1. Amir, A. & van Hout, R., 2019. "A transient model for optimizing a hybrid nocturnal sky radiation cooling system," Renewable Energy, Elsevier, vol. 132(C), pages 370-380.
    2. Karl-Villem Võsa & Andrea Ferrantelli & Jarek Kurnitski, 2022. "Cooling Thermal Comfort and Efficiency Parameters of Ceiling Panels, Underfloor Cooling, Fan-Assisted Radiators, and Fan Coil," Energies, MDPI, vol. 15(11), pages 1-19, June.
    3. Gopalakrishna Gangisetty & Ron Zevenhoven, 2023. "A Review of Nanoparticle Material Coatings in Passive Radiative Cooling Systems Including Skylights," Energies, MDPI, vol. 16(4), pages 1-59, February.
    4. Rachana Vidhi, 2018. "A Review of Underground Soil and Night Sky as Passive Heat Sink: Design Configurations and Models," Energies, MDPI, vol. 11(11), pages 1-24, October.
    5. Vall, Sergi & Castell, Albert, 2017. "Radiative cooling as low-grade energy source: A literature review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 77(C), pages 803-820.
    6. Lu, Xing & Xu, Peng & Wang, Huilong & Yang, Tao & Hou, Jin, 2016. "Cooling potential and applications prospects of passive radiative cooling in buildings: The current state-of-the-art," Renewable and Sustainable Energy Reviews, Elsevier, vol. 65(C), pages 1079-1097.
    7. Cui, Yong & Wang, Yiping & Huang, Qunwu & Wei, Shichao, 2016. "Effect of radiation and convection heat transfer on cooling performance of radiative panel," Renewable Energy, Elsevier, vol. 99(C), pages 10-17.
    8. Ahmad, Irshad, 2010. "Performance of antisolar insulated roof system," Renewable Energy, Elsevier, vol. 35(1), pages 36-41.
    9. Man, Yi & Yang, Hongxing & Spitler, Jeffrey D. & Fang, Zhaohong, 2011. "Feasibility study on novel hybrid ground coupled heat pump system with nocturnal cooling radiator for cooling load dominated buildings," Applied Energy, Elsevier, vol. 88(11), pages 4160-4171.

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