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Ideal thermal conductivity of a passive building wall: Determination method and understanding

Author

Listed:
  • Zhang, Yu
  • Zhang, Yinping
  • Wang, Xin
  • Chen, Qun

Abstract

If buildings can change “clothes” according to seasons like human being, the energy consumption for their space heating or cooling will be saved greatly. For this purpose, the thermophysical properties of building external wall should be self-adjusted according to outdoor temperature. In this study, a method of determining the ideal thermal conductivity k(t) of external wall with constant volumetric volumetric specific heat ρcp is developed based on the concept of ideal passive energy-efficient buildings. As illustration, a passive room in Beijing is analyzed. The result shows that the ideal k(t) of external wall is approximately a square wave function whose type is hardly influenced by ρcp and the thickness of external wall, L. After optimization, the integrated uncomfortable degree has reduced by 64.3% compared with the traditional external wall. The approach can also be used in the multilayer wall.

Suggested Citation

  • Zhang, Yu & Zhang, Yinping & Wang, Xin & Chen, Qun, 2013. "Ideal thermal conductivity of a passive building wall: Determination method and understanding," Applied Energy, Elsevier, vol. 112(C), pages 967-974.
    • Handle: RePEc:eee:appene:v:112:y:2013:i:c:p:967-974
    DOI: 10.1016/j.apenergy.2013.04.007
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    Cited by:

    1. Yang, Jiangming & Wu, Huijun & Xu, Xinhua & Huang, Gongsheng & Xu, Tao & Guo, Sitong & Liang, Yuying, 2019. "Numerical and experimental study on the thermal performance of aerogel insulating panels for building energy efficiency," Renewable Energy, Elsevier, vol. 138(C), pages 445-457.
    2. Harkouss, Fatima & Fardoun, Farouk & Biwole, Pascal Henry, 2018. "Passive design optimization of low energy buildings in different climates," Energy, Elsevier, vol. 165(PA), pages 591-613.
    3. Favoino, Fabio & Overend, Mauro & Jin, Qian, 2015. "The optimal thermo-optical properties and energy saving potential of adaptive glazing technologies," Applied Energy, Elsevier, vol. 156(C), pages 1-15.
    4. Long, Linshuang & Ye, Hong & Liu, Minghou, 2016. "A new insight into opaque envelopes in a passive solar house: Properties and roles," Applied Energy, Elsevier, vol. 183(C), pages 685-699.
    5. 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.
    6. Long, Linshuang & Ye, Hong & Gao, Yanfeng & Zou, Ruqiang, 2014. "Performance demonstration and evaluation of the synergetic application of vanadium dioxide glazing and phase change material in passive buildings," Applied Energy, Elsevier, vol. 136(C), pages 89-97.
    7. Yang, Jianming & Lin, Zhongqi & Wu, Huijun & Chen, Qingchun & Xu, Xinhua & Huang, Gongsheng & Fan, Liseng & Shen, Xujun & Gan, Keming, 2020. "Inverse optimization of building thermal resistance and capacitance for minimizing air conditioning loads," Renewable Energy, Elsevier, vol. 148(C), pages 975-986.
    8. Liu, Chang & Zhang, Zhigang, 2019. "Thermal response of wall implanted with heat pipes: Experimental analysis," Renewable Energy, Elsevier, vol. 143(C), pages 1687-1697.

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