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

A. Khayrullina; T. van Hooff; B.J.E. Blocken; G.J.F. van Heijst

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

A. Khayrullina
, T. van Hooff
, B.J.E. Blocken
, G.J.F. van Heijst

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

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.

Original language	English
Title of host publication	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
Editors	Y. Sun, J. Pei, X Zhao
Publisher	Tianjin, China
Number of pages	8
Publication status	Published - Jun 2015
Event	9th 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 Duration: 12 Jul 2015 → 15 Jul 2015

Conference

Conference	9th 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
Abbreviated title	ISHVAC-COBEE 2015
Country/Territory	China
City	Tianjin
Period	12/07/15 → 15/07/15

Cite this

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 (Eds.), 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.

Khayrullina, A. ; van Hooff, T. ; Blocken, B.J.E. et al. / Optimization of air-curtain sealing efficiency with respect to heat transfer in naturally ventilated buildings. 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. editor / Y. Sun ; J. Pei ; X Zhao. Tianjin, China, 2015.

@inproceedings{b1bc58401d204db0a186923c3ae0c2a2,

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

abstract = "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.",

author = "A. Khayrullina and \{van Hooff\}, T. and B.J.E. Blocken and \{van Heijst\}, G.J.F.",

year = "2015",

month = jun,

language = "English",

editor = "Y. Sun and J. Pei and X Zhao",

booktitle = "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",

publisher = "Tianjin, China",

note = "9th 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, ISHVAC-COBEE 2015 ; Conference date: 12-07-2015 Through 15-07-2015",

}

Khayrullina, A , van Hooff, T, Blocken, BJE & van Heijst, GJF 2015, Optimization of air-curtain sealing efficiency with respect to heat transfer in naturally ventilated buildings. in Y Sun, J Pei & X Zhao (eds), 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, 9th 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, 12/07/15.

Optimization of air-curtain sealing efficiency with respect to heat transfer in naturally ventilated buildings. / Khayrullina, A.; van Hooff, T.; Blocken, B.J.E. et al.
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. ed. / Y. Sun; J. Pei; X Zhao. Tianjin, China, 2015.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Optimization of air-curtain sealing efficiency with respect to heat transfer in naturally ventilated buildings

AU - Khayrullina, A.

AU - van Hooff, T.

AU - Blocken, B.J.E.

AU - van Heijst, G.J.F.

PY - 2015/6

Y1 - 2015/6

N2 - 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.

AB - 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.

M3 - Conference contribution

BT - 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

A2 - Sun, Y.

A2 - Pei, J.

A2 - Zhao, X

PB - Tianjin, China

T2 - 9th 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

Y2 - 12 July 2015 through 15 July 2015

ER -

Khayrullina A , van Hooff T, Blocken BJE, van Heijst GJF. Optimization of air-curtain sealing efficiency with respect to heat transfer in naturally ventilated buildings. In Sun Y, Pei J, Zhao X, 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. 2015

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

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