Modeling a Naturally Ventilated Double Skin Façade with a Building Thermal Simulation Program

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Resumé

The use of Double Skin Façade (DSF) has increased during the last decade. There are many reasons for this including e.g. aesthetics, sound insulation, improved indoor environment and energy savings. However, the influence on the indoor environment and energy consumption are very difficult to predict. This is manly due to the very transient and complex air flow in the naturally ventilated double skin façade cavity.

In this paper the modelling of the DSF using a thermal simulation program, BSim, is discussed. The simulations are based on the measured weather boundary conditions, and the simulation results are compared to the measurement results like energy consumption for cooling, air temperature, temperature gradient and mass flow rate in the DSF cavity, etc.

Details about the measurements are reported in \Kalyanova et al. 2008\. The thermal simulation program does not at the moment include a special model to simulate the DSF. However, the results show that it was possible to predict the energy flow, temperature distribution and airflow in the DSF. The good agreement between the measured and simulated results was unfortunately very sensitive to the model. This implies that without the possibility to calibrate the simulation model with measured data the risk of generating poor results is imminent. Therefore further work including both measurements and more detailed and robust simulation programs are necessary

OriginalsprogEngelsk
TitelProceedings of the 8th Symposium on Building Physics in the Nordic Countries : Nordic Symposium on Building Physics 2008, NSB2008
RedaktørerCarsten Rode
Vol/bind1
ForlagTechnical University of Denmark (DTU)
Publikationsdato2008
Sider143-150
ISBN (Trykt)9788778772657
StatusUdgivet - 2008
BegivenhedNordic Symposium on Building Physics - Copenhagen, Danmark
Varighed: 16 jun. 200818 jun. 2008
Konferencens nummer: 8

Konference

KonferenceNordic Symposium on Building Physics
Nummer8
LandDanmark
ByCopenhagen
Periode16/06/200818/06/2008
NavnBYGDTU Report
NummerR-189
ISSN1601-2917

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Skin
Energy utilization
Sound insulation
Air
Thermal gradients
Hot Temperature
Energy conservation
Temperature distribution
Flow rate
Boundary conditions
Cooling
Temperature

Bibliografisk note

Also published on a CD. See www.nsb2008.org

Citer dette

Jensen, R. L., Kalyanova, O., & Heiselberg, P. (2008). Modeling a Naturally Ventilated Double Skin Façade with a Building Thermal Simulation Program. I C. Rode (red.), Proceedings of the 8th Symposium on Building Physics in the Nordic Countries: Nordic Symposium on Building Physics 2008, NSB2008 (Bind 1, s. 143-150). Technical University of Denmark (DTU). BYGDTU Report, Nr. R-189
Jensen, Rasmus Lund ; Kalyanova, Olena ; Heiselberg, Per. / Modeling a Naturally Ventilated Double Skin Façade with a Building Thermal Simulation Program. Proceedings of the 8th Symposium on Building Physics in the Nordic Countries: Nordic Symposium on Building Physics 2008, NSB2008. red. / Carsten Rode. Bind 1 Technical University of Denmark (DTU), 2008. s. 143-150 (BYGDTU Report; Nr. R-189).
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title = "Modeling a Naturally Ventilated Double Skin Fa{\cc}ade with a Building Thermal Simulation Program",
abstract = "The use of Double Skin Fa{\cc}ade (DSF) has increased during the last decade. There are many reasons for this including e.g. aesthetics, sound insulation, improved indoor environment and energy savings. However, the influence on the indoor environment and energy consumption are very difficult to predict. This is manly due to the very transient and complex air flow in the naturally ventilated double skin fa{\cc}ade cavity.In this paper the modelling of the DSF using a thermal simulation program, BSim, is discussed. The simulations are based on the measured weather boundary conditions, and the simulation results are compared to the measurement results like energy consumption for cooling, air temperature, temperature gradient and mass flow rate in the DSF cavity, etc.Details about the measurements are reported in \Kalyanova et al. 2008\. The thermal simulation program does not at the moment include a special model to simulate the DSF. However, the results show that it was possible to predict the energy flow, temperature distribution and airflow in the DSF. The good agreement between the measured and simulated results was unfortunately very sensitive to the model. This implies that without the possibility to calibrate the simulation model with measured data the risk of generating poor results is imminent. Therefore further work including both measurements and more detailed and robust simulation programs are necessary",
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Jensen, RL, Kalyanova, O & Heiselberg, P 2008, Modeling a Naturally Ventilated Double Skin Façade with a Building Thermal Simulation Program. i C Rode (red.), Proceedings of the 8th Symposium on Building Physics in the Nordic Countries: Nordic Symposium on Building Physics 2008, NSB2008. bind 1, Technical University of Denmark (DTU), BYGDTU Report, nr. R-189, s. 143-150, Nordic Symposium on Building Physics, Copenhagen, Danmark, 16/06/2008.

Modeling a Naturally Ventilated Double Skin Façade with a Building Thermal Simulation Program. / Jensen, Rasmus Lund; Kalyanova, Olena; Heiselberg, Per.

Proceedings of the 8th Symposium on Building Physics in the Nordic Countries: Nordic Symposium on Building Physics 2008, NSB2008. red. / Carsten Rode. Bind 1 Technical University of Denmark (DTU), 2008. s. 143-150 (BYGDTU Report; Nr. R-189).

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

TY - GEN

T1 - Modeling a Naturally Ventilated Double Skin Façade with a Building Thermal Simulation Program

AU - Jensen, Rasmus Lund

AU - Kalyanova, Olena

AU - Heiselberg, Per

N1 - Also published on a CD. See www.nsb2008.org

PY - 2008

Y1 - 2008

N2 - The use of Double Skin Façade (DSF) has increased during the last decade. There are many reasons for this including e.g. aesthetics, sound insulation, improved indoor environment and energy savings. However, the influence on the indoor environment and energy consumption are very difficult to predict. This is manly due to the very transient and complex air flow in the naturally ventilated double skin façade cavity.In this paper the modelling of the DSF using a thermal simulation program, BSim, is discussed. The simulations are based on the measured weather boundary conditions, and the simulation results are compared to the measurement results like energy consumption for cooling, air temperature, temperature gradient and mass flow rate in the DSF cavity, etc.Details about the measurements are reported in \Kalyanova et al. 2008\. The thermal simulation program does not at the moment include a special model to simulate the DSF. However, the results show that it was possible to predict the energy flow, temperature distribution and airflow in the DSF. The good agreement between the measured and simulated results was unfortunately very sensitive to the model. This implies that without the possibility to calibrate the simulation model with measured data the risk of generating poor results is imminent. Therefore further work including both measurements and more detailed and robust simulation programs are necessary

AB - The use of Double Skin Façade (DSF) has increased during the last decade. There are many reasons for this including e.g. aesthetics, sound insulation, improved indoor environment and energy savings. However, the influence on the indoor environment and energy consumption are very difficult to predict. This is manly due to the very transient and complex air flow in the naturally ventilated double skin façade cavity.In this paper the modelling of the DSF using a thermal simulation program, BSim, is discussed. The simulations are based on the measured weather boundary conditions, and the simulation results are compared to the measurement results like energy consumption for cooling, air temperature, temperature gradient and mass flow rate in the DSF cavity, etc.Details about the measurements are reported in \Kalyanova et al. 2008\. The thermal simulation program does not at the moment include a special model to simulate the DSF. However, the results show that it was possible to predict the energy flow, temperature distribution and airflow in the DSF. The good agreement between the measured and simulated results was unfortunately very sensitive to the model. This implies that without the possibility to calibrate the simulation model with measured data the risk of generating poor results is imminent. Therefore further work including both measurements and more detailed and robust simulation programs are necessary

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KW - Natural ventilation

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M3 - Article in proceeding

SN - 9788778772657

VL - 1

T3 - BYGDTU Report

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BT - Proceedings of the 8th Symposium on Building Physics in the Nordic Countries

A2 - Rode, Carsten

PB - Technical University of Denmark (DTU)

ER -

Jensen RL, Kalyanova O, Heiselberg P. Modeling a Naturally Ventilated Double Skin Façade with a Building Thermal Simulation Program. I Rode C, red., Proceedings of the 8th Symposium on Building Physics in the Nordic Countries: Nordic Symposium on Building Physics 2008, NSB2008. Bind 1. Technical University of Denmark (DTU). 2008. s. 143-150. (BYGDTU Report; Nr. R-189).