An Approach for Lighting Calculations in Indoor Mirrored Facilities Based on Virtual Twin-Spaces

The presence of walls with different reflectance in indoor facilities is a problem when designing their lighting installations. This becomes more serious one or are mirrors, common situation medical, sport, educative and many other facilities. Even if some programs can work approaches, the results far from exact and, cases, designers ignore mirrors by eye, that frequently excessive terms illuminance on working planes, glare energy consumption use materials. These deviations intended due to direct indirect estimation remarkably lower than 1 mirrored walls. In this framework uncertainty, presented objective developing an intuitive theoretical model based consideration virtual twin-spaces behind mirrors. proposal not just approach, but useful tool providing input for any kind calculation ranging lumen method, used quick pre-dimensioning, most complete calculations computational methods. addition, apart calculating number luminaires photometric parameters, twin-rooms also takes into account extended field vision users, including objects behind, luminaries. advantage has no precedent literature up date.