Experimental Analysis and Model Validation of an Opaque Ventilated Facade

F. Peci López, Rasmus Lund Jensen, Per Heiselberg, M. Ruiz de Adana Santiago

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

31 Citationer (Scopus)

Resumé

Natural ventilation is a convenient way of reducing energy consumption in buildings. In this study an experimental module of an opaque ventilated façade (OVF) was built and tested for assessing its potential of supplying free ventilation and air preheating for the building. A numerical model was created and validated against the experimental data. The experimental results showed that the flow rates induced in the façade cavity were due to mixed driving forces: wind and buoyancy. Depending on the weather conditions one of them was the main driving force, or both were of the same order. When the wind force was the main driving force, higher flow rates were found. In these cases buoyancy acted as supporting driving force. When the wind speed was low and buoyancy prevailed lower flow rates were found. Air and surface temperatures were predicted by the numerical model with a better accuracy than flow and energy rates. The model predicts correctly the influence of the wind and buoyancy driving forces. The experimental OVF module showed potential for free ventilation and air preheating, although it depends on weather and geometrical variables. The use of the numerical model using the right parameters was found viable for analyzing the performance of an OVF.
OriginalsprogEngelsk
TidsskriftBuilding and Environment
Vol/bind56
Udgave nummer2012
Sider (fra-til)265–275
Antal sider11
ISSN0360-1323
DOI
StatusUdgivet - okt. 2012

Fingerprint

Facades
model validation
Buoyancy
buoyancy
Ventilation
ventilation
Numerical models
Preheating
air
Flow rate
Air
energy consumption
low flow
building
cavity
surface temperature
Energy utilization
experimental study
air temperature
wind velocity

Emneord

  • Natural Ventilation
  • Opaque Ventilated Façade
  • Ventilated Façade
  • Energy Saving

Citer dette

López, F. Peci ; Jensen, Rasmus Lund ; Heiselberg, Per ; Santiago, M. Ruiz de Adana. / Experimental Analysis and Model Validation of an Opaque Ventilated Facade. I: Building and Environment. 2012 ; Bind 56, Nr. 2012. s. 265–275.
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abstract = "Natural ventilation is a convenient way of reducing energy consumption in buildings. In this study an experimental module of an opaque ventilated fa{\cc}ade (OVF) was built and tested for assessing its potential of supplying free ventilation and air preheating for the building. A numerical model was created and validated against the experimental data. The experimental results showed that the flow rates induced in the fa{\cc}ade cavity were due to mixed driving forces: wind and buoyancy. Depending on the weather conditions one of them was the main driving force, or both were of the same order. When the wind force was the main driving force, higher flow rates were found. In these cases buoyancy acted as supporting driving force. When the wind speed was low and buoyancy prevailed lower flow rates were found. Air and surface temperatures were predicted by the numerical model with a better accuracy than flow and energy rates. The model predicts correctly the influence of the wind and buoyancy driving forces. The experimental OVF module showed potential for free ventilation and air preheating, although it depends on weather and geometrical variables. The use of the numerical model using the right parameters was found viable for analyzing the performance of an OVF.",
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Experimental Analysis and Model Validation of an Opaque Ventilated Facade. / López, F. Peci; Jensen, Rasmus Lund; Heiselberg, Per; Santiago, M. Ruiz de Adana.

I: Building and Environment, Bind 56, Nr. 2012, 10.2012, s. 265–275.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

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AU - Jensen, Rasmus Lund

AU - Heiselberg, Per

AU - Santiago, M. Ruiz de Adana

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