A NEW METHOD TO CALCULATE INDOOR NATURAL LIGHTING BY IMPROVING “LUMEN MODELS
Many researches were undertaken in order to set up models which enable to calculate indoor daylighting 1-3. There are three of types method to calculate the daylight luminance through windows and large openings inside the building. Among others, ‘simplified methods (Lumen method, Split Flux System method, etc…), ‘numerical simulation method (Radiosity, Ray Tracing, etc…) and finally ‘experimental method (scale model, building experimental, etc…) are described in literature. We put some specific interest in the ‘simplified methods because they are easy to use and dont need a lot of inputs for simulation. 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 can be used only to overcast conditions. Another example, the ‘lumen method applied for any skies, but the models gives 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 will to introduce the notion of ‘Equivalent Deep (ED) into the ‘Lumen method. This ‘Equivalent Deep will calculate any values and any types of skies instead of the original “Lumen method; that only calculate five values.
Fakra Ali Hamada Harry Boyer Eddy Lafosse Philippe Lauret
Laboratoire de Physique du Batiment et des Systèmes Faculté des Sciences de l’Homme et de l’Environnement 117 rue du général Ailleret 97430, Tampon Université de La Réunion (France)
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）