Optimization of air-curtain sealing efficiency with respect to heat transfer in naturally ventilated buildings

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

This study presents results of coupled 3D steady Reynolds-averaged Navier-Stokes (RANS) Computational Fluid Dynamics (CFD) simulations of an isolated naturally-ventilated building with the application of an air curtain to prevent heat transfer across a doorway. The considered parameters include air curtain velocity, width and angle, indoor and outdoor tempera-tures, and wind flow. The results showed that higher temperatures inside the studied building were provided for: (1) higher jet velocities Vac for a jet angle a = 15deg, when jet width wjet is constant; (2) larger jet width wjet, when jet angle a and jet momentum Mac' are constant; (3) jet angle a = 0deg, when jet velocity Vac and jet width wjet are constant. The results also showed that for an air curtain with a = 0deg the air jet slightly bended to the outside that is possibly caused by stagnation-zone flow in front of the building.
Originele taal-2Engels
TitelThe 9th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC) and the 3rd International Conference on Building Energy and Environment (COBEE), 12-15 July 2015 Tianjin, China
RedacteurenY. Sun, J. Pei, X Zhao
UitgeverijTianjin, China
Aantal pagina's8
StatusGepubliceerd - jun 2015
Evenement9th International Symposium on Heating, Ventilation, and Air Conditioning (ISHVAC 2015) / 3rd International Conference on Building Energy and Environment (COBEE 2015), July 12-15, 2015, Tianjin, China - Tianjin, China
Duur: 12 jul 201515 jul 2015

Congres

Congres9th International Symposium on Heating, Ventilation, and Air Conditioning (ISHVAC 2015) / 3rd International Conference on Building Energy and Environment (COBEE 2015), July 12-15, 2015, Tianjin, China
Verkorte titelISHVAC-COBEE 2015
LandChina
StadTianjin
Periode12/07/1515/07/15
AnderISHVAC-COBEE 2015 Tianjin, China

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  • Citeer dit

    Khayrullina, A., van Hooff, T., Blocken, B. J. E., & van Heijst, G. J. F. (2015). Optimization of air-curtain sealing efficiency with respect to heat transfer in naturally ventilated buildings. In Y. Sun, J. Pei, & X. Zhao (editors), The 9th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC) and the 3rd International Conference on Building Energy and Environment (COBEE), 12-15 July 2015 Tianjin, China Tianjin, China.