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Experimental study on the thermal performance of underground cave dwellings with coupled Yaokang

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  • Zhu, Jiayin
  • Tong, Liping

Abstract

The vernacular architecture of cave dwelling is known for its use of local building materials and traditional heating system (Yaokang) for a comfortable indoor environment. However, it has not been proved by a quantitative evaluation study so far. A seven days short-term on-site monitoring was thus conducted in winter for evaluating the thermal performance and heating potential of Yaokang. Experimental results and Kang heating potential coefficient (KPC) proposed here indicate that the average heat emission per unit area of the Yaokang is between 45 and 80 W/m2, giving energy saving of around 59.4% for cave dwelling in cold area of China. Additionally, to assess the long-term thermal response characteristic of underground cave dwellings, a two-years continuous remote monitoring was carried out. And the monitoring results show that the indoor air temperature of cave dwellings ranges from 9 °C to 17.4 °C in winter and from 22.8 °C to 26.7 °C in summer. Conclusions drawn from this study lay a theoretical basis for low energy building design.

Suggested Citation

  • Zhu, Jiayin & Tong, Liping, 2017. "Experimental study on the thermal performance of underground cave dwellings with coupled Yaokang," Renewable Energy, Elsevier, vol. 108(C), pages 156-168.
    • Handle: RePEc:eee:renene:v:108:y:2017:i:c:p:156-168
    DOI: 10.1016/j.renene.2017.02.051
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    References listed on IDEAS

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    1. (John) Zhai, Zhiqiang & Yates, Andrew Porter & Duanmu, Lin & Wang, Zongshan, 2015. "An evaluation and model of the Chinese Kang system to improve indoor thermal comfort in northeast rural China – Part-1: Model development," Renewable Energy, Elsevier, vol. 84(C), pages 3-11.
    2. Zhai, Zhiqiang John & Yates, Andrew Porter & Duanmu, Lin & Wang, Zongshan, 2015. "An evaluation and model of the Chinese Kang system to improve indoor thermal comfort in northeast rural China – Part-2: Result analysis," Renewable Energy, Elsevier, vol. 84(C), pages 12-21.
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    Cited by:

    1. Zhao, Xi & Nie, Ping & Zhu, Jiayin & Tong, Liping & Liu, Yingfang, 2020. "Evaluation of thermal environments for cliff-side cave dwellings in cold region of China," Renewable Energy, Elsevier, vol. 158(C), pages 154-166.
    2. Ariadna Carrobé & Lídia Rincón & Ingrid Martorell, 2021. "Thermal Monitoring and Simulation of Earthen Buildings. A Review," Energies, MDPI, vol. 14(8), pages 1-47, April.

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