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Numerical analysis of effect of shape-stabilized phase change material plates in a building combined with night ventilation

Author

Listed:
  • Zhou, Guobing
  • Yang, Yongping
  • Wang, Xin
  • Zhou, Shaoxiang

Abstract

Effect of shape-stabilized phase change material (SSPCM) plates combined with night ventilation in summer is investigated numerically. A building in Beijing without active air-conditioning is considered for analysis, which includes SSPCM plates as inner linings of walls and the ceiling. Unsteady simulation is performed using a verified enthalpy model, with time period covering the summer season. Effects of the following factors on room air temperature are investigated: the thermophysical properties of the SSPCM, the thickness of SSPCM plate and air change per hour (ACH) at both nighttime and daytime. The results show that the SSPCM plates could decrease the daily maximum temperature by up to 2 °C due to the cool storage at night. The appropriate values for melting temperature, heat of fusion, thermal conductivity and thickness of SSPCM plates need to be considered and calculated according to the climate conditions and building structure. The ACH at night needs to be as high as possible but the ACH at daytime should be controlled.

Suggested Citation

  • Zhou, Guobing & Yang, Yongping & Wang, Xin & Zhou, Shaoxiang, 2009. "Numerical analysis of effect of shape-stabilized phase change material plates in a building combined with night ventilation," Applied Energy, Elsevier, vol. 86(1), pages 52-59, January.
    • Handle: RePEc:eee:appene:v:86:y:2009:i:1:p:52-59
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    References listed on IDEAS

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    1. AboulNaga, M.M & Abdrabboh, S.N, 2000. "Improving night ventilation into low-rise buildings in hot-arid climates exploring a combined wall–roof solar chimney," Renewable Energy, Elsevier, vol. 19(1), pages 47-54.
    2. Kolokotroni, M. & Aronis, A., 1999. "Cooling-energy reduction in air-conditioned offices by using night ventilation," Applied Energy, Elsevier, vol. 63(4), pages 241-253, August.
    3. Shaviv, Edna & Yezioro, Abraham & Capeluto, Isaac G, 2001. "Thermal mass and night ventilation as passive cooling design strategy," Renewable Energy, Elsevier, vol. 24(3), pages 445-452.
    4. Zhou, Guobing & Zhang, Yinping & Lin, Kunping & Xiao, Wei, 2008. "Thermal analysis of a direct-gain room with shape-stabilized PCM plates," Renewable Energy, Elsevier, vol. 33(6), pages 1228-1236.
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