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Communication Dans Un Congrès Année : 2007

A NEW METHOD TO DETERMINATE INDOOR DAYLIGTHING THE BUILDING: IMPROVING " LUMEN MODELS "

Résumé

Many researches were undertaken in order to set up models which enable us to calculate indoor dayligthing [4], [5] and [6]. There are three method types to calculate the daylight luminance through windows and large openings inside the building. Among others, 'simplified methods' (''Lumen method'', ''Split Flux System method''…), 'numerical simulation method' (''Radiosity'', ''Ray Tracing''…) and finally 'experimental method' (''scale model'', ''building experimental ''…) are described in literature. We put some specific interest in the 'simplified methods' because they are easy to use and don't need a lot of data base for simulating. The big disadvantage for most of these models is these models depend on restricted conditions. For example, if we considered ''Split Flux System method'', we see that the models used only to overcast condition. Another example, the ''lumen method'' applied for any skies but the models take only five values in the space. Therefore they can only work under precise and limited circumstances. In this present paper, we purpose to see how we can circumvent these difficulties by improving the ''Lumen Model''. Indeed, we are going for introduce the notion of ''Equivalent Deep'' (E D) (''profondeur fictive'' in French) into the ''Lumen method''. This ''Equivalent Deep'' will calculate any values and any types of skies contrary to the original ''Lumen method''. The original ''lumen method'' can only calculate indoors dayligthing in five values.
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Dates et versions

hal-01198388 , version 1 (12-09-2015)

Identifiants

  • HAL Id : hal-01198388 , version 1

Citer

Fakra Ali, Harry Boyer, Eddy Laffosse, Philippe Lauret. A NEW METHOD TO DETERMINATE INDOOR DAYLIGTHING THE BUILDING: IMPROVING " LUMEN MODELS ". Solar Congress ISES 2017, ISES, 2007, Tsinghua, China. pp.456-460. ⟨hal-01198388⟩
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