COMPARATIVE ANALYSIS OF ONE-DIMENSIONAL SLAT-TYPE BLIND MODELS
Chanvit Chantrasrisalai, Daniel E . Fisher
Slat-type blinds, such as Venetian blinds, are the most commonly used shading devices for controlling solar heat gain. This study presents a comparative analysis of three one-dimensional, optical slat-type blind models suitable for building load calculations. The influence of input parameters on the predicted solar transmittance is investigated. The models are also compared to experimental data. Furthermore, the effect of the blind on building thermal loads is investigated. The results indicate that there is a need for a comprehensive optical blind model that includes advantageous features from each of the three models. In addition, a general thermal fenestration model that predicts the thermal interaction of the fenestration system having the blind with the conditioned space is needed in order to utilize one- dimensional blind models in thermal load and energy calculations.
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