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Simplified Calculation of T sol Based on Dynamic Numerical Simulation of T sky in Diverse Climates in China

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  • Jie Chen

    (School of Architecture & Urban Planning, Shenzhen University, Shenzhen 518060, China)

  • Yue Fan

    (School of Architecture & Urban Planning, Shenzhen University, Shenzhen 518060, China
    Shenzhen Center for Human-Oriented Environment and Sustainable Design (CHESD), Shenzhen 518060, China)

  • Menghan Wang

    (School of Architecture & Urban Planning, Shenzhen University, Shenzhen 518060, China)

Abstract

An accurate calculation of sol-air temperature ( T sol ) is very important for urban environments and building energy consumption. There are various methods that can be used to calculate T sol by considering sky radiation effects. Climate conditions are vital factors affecting sky temperature ( T sky ). In this paper, in order to select an appropriate calculation method to determine long-wave radiation, a theoretical analysis was carried out based on the effect of T sky on the thermal gain of building envelopes due to long-wave radiation. Typical annual meteorological data were selected to calculate T sol for 10 meteorological stations covering five building thermal zones in China. The application of the T sol model was studied using MBE as the measurement standard, and a linear regression equation for the calorific value of the envelope obtained via the T sky estimation method and the T sky dynamic calculation method was established. The results show that relative humidity is the key meteorological factor that affects the application of the T sol model and that the T sky dynamic calculation should be used to calculate long-wave radiation in regions with low relative humidity. A thermal correction equation for buildings was obtained for use in areas lacking meteorological data and to provide a basis for sustainable building design.

Suggested Citation

  • Jie Chen & Yue Fan & Menghan Wang, 2023. "Simplified Calculation of T sol Based on Dynamic Numerical Simulation of T sky in Diverse Climates in China," Sustainability, MDPI, vol. 15(1), pages 1-14, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:1:p:839-:d:1023450
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    2. Li, Danny H.W. & Yang, Liu & Lam, Joseph C., 2012. "Impact of climate change on energy use in the built environment in different climate zones – A review," Energy, Elsevier, vol. 42(1), pages 103-112.
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