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Impact des microclimats urbains sur la demande énergétique des bâtiments - Cas de la rue canyon

Abstract : The building energy demand is greatly affected by air conditioning systems, mainly during summer. The objective of this study is to define the interactions between urban microclimate, buildings and its air conditioning energy demand, by simulation of heat and mass transfer in the typical case of an urban street canyon.
A zonal model is chosen for heat and mass transfer modeling. This approach, midway between accu-rate fluid dynamics codes and simple nodal models, allows us to describe, accurately enough for build-ing energy study, thermal and wind speed parameters in the street. Then, the solar radiation and wall interchange are modeled for a street. The advantage of the simplified model proposed here is high-lighted with a natural convection study of the street. Besides, air flows due to the wind are studied from experimental data, and an empirical approach of the isothermal flow is proposed. A coupled study of wind and natural convection in a street canyon is completed on a 28 days period and com-pared with experimental data. The consequences of heat and mass transfer in the canyon on the heat island evolution are discussed, as on the building energy demand.
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https://tel.archives-ouvertes.fr/tel-00011115
Contributor : Emmanuel Bozonnet <>
Submitted on : Friday, November 25, 2005 - 12:40:57 PM
Last modification on : Thursday, January 17, 2019 - 11:28:06 AM
Long-term archiving on: : Friday, April 2, 2010 - 11:11:48 PM

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  • HAL Id : tel-00011115, version 1

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Emmanuel Bozonnet. Impact des microclimats urbains sur la demande énergétique des bâtiments - Cas de la rue canyon. Sciences de l'ingénieur [physics]. Université de la Rochelle, 2005. Français. ⟨tel-00011115⟩

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