The Lighting Handbook ZG

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84 Enclosed IP2X 0.96 0.88 0.96 0.95 0.00 1.97 0.89 0.85 0.72 0.93 0.98 0.97 0.96 0.82 0.88 0.96 0.93 0.0 Table for luminaire maintenance factor (LMF) Table for room maintenance factor (RMF) Maintenance lighting systems .5 1.56 0.92 0.5 Direct VC C N S 1.72 0.92 0.0 1.94 0.84 0.94 0.86 0.94 0. with open light distribution 0.96 0.81 0.93 0.95 0.90 0.91 0.91 Reflector exposed above (self-cleaning effect) 0.95 0.00 1.60 0.55 From CIE publication “Maintenance indoor electric lighting systems”, dated 2005, ISBN 3900734348 The figures the table above apply reflection factors 70/50/20 and medium-sized room 2.81 0.5 1.81 From CIE publication “Maintenance indoor electric lighting systems”, dated 2005, ICBN 3900734348 Ambient conditions: very clean, clean, normal, soiled Luminaire cleaning interval years Illumination type Environment type 0.00 1.77 0.89 0.202 The Lighting Handbook Luminaire cleaning interval years Environment type C Luminaire type Batten lum.86 0.73 0.89 0.92 0.83 0.00 1.93 0.77 0.00 1.00 1.95 0.97 0.89 0.74 0.84 0.88 0.94 0.93 0.00 1.93 0.92 0.96 0.95 0.95 0.83 0.94 0.85 Dust-proof IP5X 0.94 0.86 0.83 0.91 0.93 0.83 0.90 0.75 0.77 0.00 0.92 0.85 0.91 0.86 0.87 0.95 0.91 0.87 0.90 0.92 0.00 0.91 0.89 0.75 Indirect VC C N S 1.86 0.87 0.94 0.00 1.86 Direct/Indirect VC C N S 1.92 Indirect luminaires 0.87 Reflector enclosed above (no self-cleaning effect) 0.93 0.00 0.91 0.95 0.00 1.94 0.98 0.5) Ambient conditions: very clean, clean, normal, soiled 0