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A platform for research: civil engineering, architecture and urbanism
Quantifying Convective Heat Transfer Coefficients During Natural Ventilation in a Full-Scale Operational Building
Convective heat transfer coefficient (h) between a building surface and adjacent air determines the heat loss (or heat gain) from thermal masses. Quantifying h is challenging, as h depends on many factors such as building geometry, surface orientation and flow velocity near the surface. This paper aims to quantify h for the indoor surfaces in the Y2E2 Building at Stanford University using computational fluid dynamics (CFD) simulations. Nine cases of large eddy simulations, covering a wide range of operating conditions, are run to derive the range of h for each surface under buoyancy-driven ventilation. Comparing h derived from CFD simulations to h calculated using the 2012 ASHRAE Handbook shows that their differences could exceed one order of magnitude. These significant differences suggest that general correlations of h may not be applicable to real buildings with complex geometry, and therefore h should be derived on a case-by-case basis for different buildings.
Quantifying Convective Heat Transfer Coefficients During Natural Ventilation in a Full-Scale Operational Building
Convective heat transfer coefficient (h) between a building surface and adjacent air determines the heat loss (or heat gain) from thermal masses. Quantifying h is challenging, as h depends on many factors such as building geometry, surface orientation and flow velocity near the surface. This paper aims to quantify h for the indoor surfaces in the Y2E2 Building at Stanford University using computational fluid dynamics (CFD) simulations. Nine cases of large eddy simulations, covering a wide range of operating conditions, are run to derive the range of h for each surface under buoyancy-driven ventilation. Comparing h derived from CFD simulations to h calculated using the 2012 ASHRAE Handbook shows that their differences could exceed one order of magnitude. These significant differences suggest that general correlations of h may not be applicable to real buildings with complex geometry, and therefore h should be derived on a case-by-case basis for different buildings.
Quantifying Convective Heat Transfer Coefficients During Natural Ventilation in a Full-Scale Operational Building
Environ Sci Eng
Wang, Liangzhu Leon (editor) / Ge, Hua (editor) / Zhai, Zhiqiang John (editor) / Qi, Dahai (editor) / Ouf, Mohamed (editor) / Sun, Chanjuan (editor) / Wang, Dengjia (editor) / Chew, Lup Wai (author) / Chen, Chen (author) / Yuan, Chao (author)
International Conference on Building Energy and Environment ; 2022
Proceedings of the 5th International Conference on Building Energy and Environment ; Chapter: 211 ; 2001-2009
2023-09-05
9 pages
Article/Chapter (Book)
Electronic Resource
English
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