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Optimal Lighting Tool

 

Example: How much lamp does a 50 sqm classroom need?

The recommended lux for a classroom is 250 lux. Let's say the school wants to use an 8W HiGreen LED T5 (600 Lumens).
Using a Cu = 0.90 and Llf = 0.90, The recommended number of lamps per square meter is 0.51 "0.51 lamps/sqm x 50 sqm = 25 lamps".

 

Lumens (Lm) / HiGreen Lamp
Coefficient of Utilization (Cu )
Calculate for
Number of Lamps required per Square Meter
Area (SQM) per Lamp
 
Recommendation

 

 



Recommended Lux (Lumens per SQM)
Warehouses, Homes, Theaters, Archives
150
Easy Office Work, Classes
250
Normal Office Work, PC Work, Study Library, Groceries, Show Rooms, Laboratories
500
Supermarkets, Mechanical Workshops, Office Landscapes
750
Normal Drawing Work, Detailed Mechanical Workshops, Operation Theatres
1,000
Detailed Drawing Work, Very Detailed Mechanical Works
1,500 - 2,000