Measurement and Modelling of Air Flow Rate in a Naturally Ventilated Double Skin Facade

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Resumé

Air flow rate in a naturally ventilated double skin façade (DSF) is extremely difficult to measure due to the stochastic nature of wind, and as a consequence non-uniform and dynamic flow conditions. This paper describes the results of two different methods to measure the air flow in a full-scale outdoor test facility with a naturally ventilated double skin façade. Although both methods are difficult to use under such dynamic air flow conditions, they show reasonable agreement and can be used for experimental validation of numerical models of natural ventilation air flow in DSF. Simulations by the thermal simulation program, BSim, based on measured weather boundary conditions are compared to the measured air temperature, temperature gradient and mass flow rate in the DSF cavity. The results show that it is possible to predict the temperature distribution and airflow in the DSF although some discrepancies were found.

OriginalsprogEngelsk
TitelThe First International Conference on Building Energy and Environment
RedaktørerJunjie Liu, Tengfei Zhang, Zhiqiang(John) Zhai
Antal sider9
ForlagTianjin University and Dalian University of Technology
Publikationsdato2008
ISBN (Elektronisk)9780981688114
StatusUdgivet - 2008
BegivenhedThe International Conference on Building Energy and Environment - Dalian, Kina
Varighed: 13 jul. 200816 jul. 2008
Konferencens nummer: 1

Konference

KonferenceThe International Conference on Building Energy and Environment
Nummer1
LandKina
ByDalian
Periode13/07/200816/07/2008

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Facades
Skin
Flow rate
Air
Test facilities
Thermal gradients
Ventilation
Numerical models
Temperature distribution
Boundary conditions
Temperature

Citer dette

Heiselberg, P., Kalyanova, O., & Jensen, R. L. (2008). Measurement and Modelling of Air Flow Rate in a Naturally Ventilated Double Skin Facade. I J. Liu, T. Zhang, & ZJ. Zhai (red.), The First International Conference on Building Energy and Environment Tianjin University and Dalian University of Technology.
Heiselberg, Per ; Kalyanova, Olena ; Jensen, Rasmus Lund. / Measurement and Modelling of Air Flow Rate in a Naturally Ventilated Double Skin Facade. The First International Conference on Building Energy and Environment. red. / Junjie Liu ; Tengfei Zhang ; Zhiqiang(John) Zhai. Tianjin University and Dalian University of Technology, 2008.
@inproceedings{09efedd0e7c711ddb0a4000ea68e967b,
title = "Measurement and Modelling of Air Flow Rate in a Naturally Ventilated Double Skin Facade",
abstract = "Air flow rate in a naturally ventilated double skin fa{\cc}ade (DSF) is extremely difficult to measure due to the stochastic nature of wind, and as a consequence non-uniform and dynamic flow conditions. This paper describes the results of two different methods to measure the air flow in a full-scale outdoor test facility with a naturally ventilated double skin fa{\cc}ade. Although both methods are difficult to use under such dynamic air flow conditions, they show reasonable agreement and can be used for experimental validation of numerical models of natural ventilation air flow in DSF. Simulations by the thermal simulation program, BSim, based on measured weather boundary conditions are compared to the measured air temperature, temperature gradient and mass flow rate in the DSF cavity. The results show that it is possible to predict the temperature distribution and airflow in the DSF although some discrepancies were found.",
keywords = "COBEE, Double skin fa{\cc}ade, Natural ventilation, Air flow rate, Full-scale measurements",
author = "Per Heiselberg and Olena Kalyanova and Jensen, {Rasmus Lund}",
year = "2008",
language = "English",
editor = "Junjie Liu and Tengfei Zhang and Zhiqiang(John) Zhai",
booktitle = "The First International Conference on Building Energy and Environment",
publisher = "Tianjin University and Dalian University of Technology",

}

Heiselberg, P, Kalyanova, O & Jensen, RL 2008, Measurement and Modelling of Air Flow Rate in a Naturally Ventilated Double Skin Facade. i J Liu, T Zhang & ZJ Zhai (red), The First International Conference on Building Energy and Environment. Tianjin University and Dalian University of Technology, The International Conference on Building Energy and Environment, Dalian, Kina, 13/07/2008.

Measurement and Modelling of Air Flow Rate in a Naturally Ventilated Double Skin Facade. / Heiselberg, Per; Kalyanova, Olena; Jensen, Rasmus Lund.

The First International Conference on Building Energy and Environment. red. / Junjie Liu; Tengfei Zhang; Zhiqiang(John) Zhai. Tianjin University and Dalian University of Technology, 2008.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

TY - GEN

T1 - Measurement and Modelling of Air Flow Rate in a Naturally Ventilated Double Skin Facade

AU - Heiselberg, Per

AU - Kalyanova, Olena

AU - Jensen, Rasmus Lund

PY - 2008

Y1 - 2008

N2 - Air flow rate in a naturally ventilated double skin façade (DSF) is extremely difficult to measure due to the stochastic nature of wind, and as a consequence non-uniform and dynamic flow conditions. This paper describes the results of two different methods to measure the air flow in a full-scale outdoor test facility with a naturally ventilated double skin façade. Although both methods are difficult to use under such dynamic air flow conditions, they show reasonable agreement and can be used for experimental validation of numerical models of natural ventilation air flow in DSF. Simulations by the thermal simulation program, BSim, based on measured weather boundary conditions are compared to the measured air temperature, temperature gradient and mass flow rate in the DSF cavity. The results show that it is possible to predict the temperature distribution and airflow in the DSF although some discrepancies were found.

AB - Air flow rate in a naturally ventilated double skin façade (DSF) is extremely difficult to measure due to the stochastic nature of wind, and as a consequence non-uniform and dynamic flow conditions. This paper describes the results of two different methods to measure the air flow in a full-scale outdoor test facility with a naturally ventilated double skin façade. Although both methods are difficult to use under such dynamic air flow conditions, they show reasonable agreement and can be used for experimental validation of numerical models of natural ventilation air flow in DSF. Simulations by the thermal simulation program, BSim, based on measured weather boundary conditions are compared to the measured air temperature, temperature gradient and mass flow rate in the DSF cavity. The results show that it is possible to predict the temperature distribution and airflow in the DSF although some discrepancies were found.

KW - COBEE

KW - Double skin façade

KW - Natural ventilation

KW - Air flow rate

KW - Full-scale measurements

M3 - Article in proceeding

BT - The First International Conference on Building Energy and Environment

A2 - Liu, Junjie

A2 - Zhang, Tengfei

A2 - Zhai, Zhiqiang(John)

PB - Tianjin University and Dalian University of Technology

ER -

Heiselberg P, Kalyanova O, Jensen RL. Measurement and Modelling of Air Flow Rate in a Naturally Ventilated Double Skin Facade. I Liu J, Zhang T, Zhai ZJ, red., The First International Conference on Building Energy and Environment. Tianjin University and Dalian University of Technology. 2008