Quick Answer
Calculate Classroom Illuminance Calculator Using Luminaire Spacing and Photometric Data
Calculator
Result Interpretation
Classroom Illuminance Calculator Using Luminaire Spacing and Photometric Data calculator computes Average Horizontal Illuminance in lx using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Luminaire Luminous Flux = 3200
- Luminaire Spacing (Width) = 2.5
- Luminaire Spacing (Length) = 3
- Light Loss Factor = 0.85
- Coefficient of Utilization = 0.58
Expected Result:
- Average Horizontal Illuminance = 210.34666666667
Engineering Interpretation:
Under the given input conditions, the calculated result is: Average Horizontal Illuminance = 210.34666666667 lx.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
average horizontal illuminance = (luminaire luminous flux * coefficient of utilization * light loss factor) / (Length * Width)Formula family: formula_lighting_classroom_lighting_road_lighting_level_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| input_luminous_flux | Luminaire Luminous Flux | INPUT | Luminaire Luminous Flux |
| input_coefficient_of_utilization | Coefficient of Utilization | INPUT | Coefficient of Utilization |
| input_light_loss_factor | Light Loss Factor | INPUT | Light Loss Factor |
| input_spacing_length | Luminaire Spacing (Length) | INPUT | Luminaire Spacing (Length) |
| input_spacing_width | Luminaire Spacing (Width) | INPUT | Luminaire Spacing (Width) |
| Average Horizontal Illuminance | Average Horizontal Illuminance | OUTPUT | Average Horizontal Illuminance |
Calculation Steps
- Enter the luminaire luminous flux in lm.
- Enter the coefficient of utilization in dimensionless.
- Enter the light loss factor in dimensionless.
- Enter the luminaire spacing (length) in m.
- Enter the luminaire spacing (width) in m.
- Step 1: Compute average horizontal illuminance.
- Read the average horizontal illuminance (lx) from the results.
Engineering Summary
Calculate Classroom Illuminance Calculator Using Luminaire Spacing and Photometric Data
Frequently Asked Questions
What does this calculator calculate?
The Classroom Illuminance Calculator Using Luminaire Spacing and Photometric Data calculator estimates Average Horizontal Illuminance based on the input parameters you provide
Why is luminaire luminous flux important in this calculation?
luminaire luminous flux is directly proportional to average horizontal illuminance. When you enter luminaire luminous flux in lm, the calculator uses it in the engineering formula to compute the output
How should I interpret the result average horizontal illuminance?
The calculator outputs average horizontal illuminance in lx. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Luminaire Luminous Flux (lm), Coefficient of Utilization (dimensionless), Light Loss Factor (dimensionless), Luminaire Spacing (Length) (m), Luminaire Spacing (Width) (m). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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