CFD MODELLING OF DOUBLE-SKIN FA?ADES WITH VENETIAN BLINDS
This paper describes CFD modelling of Double Skin fa(c)ades (DSF) with venetian blinds inside the fa(c)ade cavity. The 2-D modelling work investigates the coupled convective, conductive and radiative heat transfer through the DSF system. The angles of the venetian blind can be adjusted and a series of angles (0, 30, 45, 60 and 80 degrees) has been modelled. The modelling results are compared with the measurements from a section of fa(c)ade tested within a solar simulator and with predictions from a component based nodal model. Agreement between the three methods is generally good. Discrepancies in the results are generally caused by the simplification of the CFD model resulting less turbulence mixing within the fa(c)ade cavity. The CFD simulation output suggests that the presence of the venetian blinds has led up to 35 percent enhancement in natural ventilation flow for the fa(c)ade cavity and 75 percent reduction in heat loads for the internal environment. It was also found that little changes of the convective heat transfer coefficients on the glazing surfaces have been caused by the venetian blinds with different angles.
Double Skin fa(c)ade CFD Natural convection Solar radiation Heat transfer.
Y Ji M J Cook V I Hanby D G Infield D L Loveday L Mei
Institute of Energy and Sustainable Development, De Montfort University, Queens Building, The Gatewa Centre for Renewable Energy Systems Technology, Department of Electronic and Electrical Engineering, Department of Civil and Building Engineering, Loughborough University, Loughborough, LE11 3TU UK
国际会议
北京
英文
2007-09-03（万方平台首次上网日期，不代表论文的发表时间）