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

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Abstrakt

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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