The formula to calculate Average Illuminance (\(E_{av}\)) is:
\[ E_{av} = \frac{L \times Q \times 0.32}{L_{room} \times W_{room}} \]
Where:
Average illuminance is the total luminous flux incident on a surface, per unit area. It is measured in lux (lx).
Let's assume the following values:
Using the formula:
\[ E_{av} = \frac{2000 \times 10 \times 0.32}{5 \times 4} = 320 \, \text{lx} \]
The average illuminance is 320 lx.
| Lumens per Fixture (lm) | Number of Fixtures | Length (m) | Width (m) | Average Illuminance (lx) |
|---|---|---|---|---|
| 1000 | 5 | 5 | 4 | 80.0000 |
| 1000 | 5 | 5 | 8 | 40.0000 |
| 1000 | 5 | 10 | 4 | 40.0000 |
| 1000 | 5 | 10 | 8 | 20.0000 |
| 1000 | 10 | 5 | 4 | 160.0000 |
| 1000 | 10 | 5 | 8 | 80.0000 |
| 1000 | 10 | 10 | 4 | 80.0000 |
| 1000 | 10 | 10 | 8 | 40.0000 |
| 1000 | 15 | 5 | 4 | 240.0000 |
| 1000 | 15 | 5 | 8 | 120.0000 |
| 1000 | 15 | 10 | 4 | 120.0000 |
| 1000 | 15 | 10 | 8 | 60.0000 |
| 1000 | 20 | 5 | 4 | 320.0000 |
| 1000 | 20 | 5 | 8 | 160.0000 |
| 1000 | 20 | 10 | 4 | 160.0000 |
| 1000 | 20 | 10 | 8 | 80.0000 |
| 2000 | 5 | 5 | 4 | 160.0000 |
| 2000 | 5 | 5 | 8 | 80.0000 |
| 2000 | 5 | 10 | 4 | 80.0000 |
| 2000 | 5 | 10 | 8 | 40.0000 |
| 2000 | 10 | 5 | 4 | 320.0000 |
| 2000 | 10 | 5 | 8 | 160.0000 |
| 2000 | 10 | 10 | 4 | 160.0000 |
| 2000 | 10 | 10 | 8 | 80.0000 |
| 2000 | 15 | 5 | 4 | 480.0000 |
| 2000 | 15 | 5 | 8 | 240.0000 |
| 2000 | 15 | 10 | 4 | 240.0000 |
| 2000 | 15 | 10 | 8 | 120.0000 |
| 2000 | 20 | 5 | 4 | 640.0000 |
| 2000 | 20 | 5 | 8 | 320.0000 |
| 2000 | 20 | 10 | 4 | 320.0000 |
| 2000 | 20 | 10 | 8 | 160.0000 |
| 3000 | 5 | 5 | 4 | 240.0000 |
| 3000 | 5 | 5 | 8 | 120.0000 |
| 3000 | 5 | 10 | 4 | 120.0000 |
| 3000 | 5 | 10 | 8 | 60.0000 |
| 3000 | 10 | 5 | 4 | 480.0000 |
| 3000 | 10 | 5 | 8 | 240.0000 |
| 3000 | 10 | 10 | 4 | 240.0000 |
| 3000 | 10 | 10 | 8 | 120.0000 |
| 3000 | 15 | 5 | 4 | 720.0000 |
| 3000 | 15 | 5 | 8 | 360.0000 |
| 3000 | 15 | 10 | 4 | 360.0000 |
| 3000 | 15 | 10 | 8 | 180.0000 |
| 3000 | 20 | 5 | 4 | 960.0000 |
| 3000 | 20 | 5 | 8 | 480.0000 |
| 3000 | 20 | 10 | 4 | 480.0000 |
| 3000 | 20 | 10 | 8 | 240.0000 |
| 4000 | 5 | 5 | 4 | 320.0000 |
| 4000 | 5 | 5 | 8 | 160.0000 |
| 4000 | 5 | 10 | 4 | 160.0000 |
| 4000 | 5 | 10 | 8 | 80.0000 |
| 4000 | 10 | 5 | 4 | 640.0000 |
| 4000 | 10 | 5 | 8 | 320.0000 |
| 4000 | 10 | 10 | 4 | 320.0000 |
| 4000 | 10 | 10 | 8 | 160.0000 |
| 4000 | 15 | 5 | 4 | 960.0000 |
| 4000 | 15 | 5 | 8 | 480.0000 |
| 4000 | 15 | 10 | 4 | 480.0000 |
| 4000 | 15 | 10 | 8 | 240.0000 |
| 4000 | 20 | 5 | 4 | 1,280.0000 |
| 4000 | 20 | 5 | 8 | 640.0000 |
| 4000 | 20 | 10 | 4 | 640.0000 |
| 4000 | 20 | 10 | 8 | 320.0000 |
| 5000 | 5 | 5 | 4 | 400.0000 |
| 5000 | 5 | 5 | 8 | 200.0000 |
| 5000 | 5 | 10 | 4 | 200.0000 |
| 5000 | 5 | 10 | 8 | 100.0000 |
| 5000 | 10 | 5 | 4 | 800.0000 |
| 5000 | 10 | 5 | 8 | 400.0000 |
| 5000 | 10 | 10 | 4 | 400.0000 |
| 5000 | 10 | 10 | 8 | 200.0000 |
| 5000 | 15 | 5 | 4 | 1,200.0000 |
| 5000 | 15 | 5 | 8 | 600.0000 |
| 5000 | 15 | 10 | 4 | 600.0000 |
| 5000 | 15 | 10 | 8 | 300.0000 |
| 5000 | 20 | 5 | 4 | 1,600.0000 |
| 5000 | 20 | 5 | 8 | 800.0000 |
| 5000 | 20 | 10 | 4 | 800.0000 |
| 5000 | 20 | 10 | 8 | 400.0000 |