Number of Floodlighting Units Calculator

✖Area to be Lighted defined by their light distribution, with some consideration of potential application as well.ⓘ Area to be Lighted [A_light]			+10% -10%
✖Illumination intensity refers to the level or strength of light in a given area. It quantifies the amount of light reaching a surface and is typically measured in units such as lux or foot-candles.ⓘ Illumination Intensity [E_v]			+10% -10%
✖Lumen flux is often used as an objective measure of the useful light emitted by a light source.ⓘ Lumen Flux [Φ_B]			+10% -10%

✖Number of Floodlighting Units where the light sources are concentrated into narrow light beams using specific reflectors is known as flood lighting.ⓘ Number of Floodlighting Units [N]

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Formula

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Number of Floodlighting Units

Formula

`"N" = ("A"_{"light"}*"E"_{"v"})/(0.7*"Φ"_{"B"})`

Example

`"1.710253"=("8.98m²"*"1.02lx")/(0.7*"7.651lm")`

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Number of Floodlighting Units Solution

STEP 0: Pre-Calculation Summary

Formula Used

Number of Floodlighting Units = (Area to be Lighted*Illumination Intensity)/(0.7*Lumen Flux)
N = (A_light*E_v)/(0.7*Φ_B)
This formula uses 4 Variables

Variables Used

Number of Floodlighting Units - Number of Floodlighting Units where the light sources are concentrated into narrow light beams using specific reflectors is known as flood lighting.
Area to be Lighted - (Measured in Square Meter) - Area to be Lighted defined by their light distribution, with some consideration of potential application as well.
Illumination Intensity - (Measured in Lux) - Illumination intensity refers to the level or strength of light in a given area. It quantifies the amount of light reaching a surface and is typically measured in units such as lux or foot-candles.
Lumen Flux - (Measured in Lumen) - Lumen flux is often used as an objective measure of the useful light emitted by a light source.

STEP 1: Convert Input(s) to Base Unit

Area to be Lighted: 8.98 Square Meter --> 8.98 Square Meter No Conversion Required
Illumination Intensity: 1.02 Lux --> 1.02 Lux No Conversion Required
Lumen Flux: 7.651 Lumen --> 7.651 Lumen No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

N = (A_light*E_v)/(0.7*Φ_B) --> (8.98*1.02)/(0.7*7.651)

Evaluating ... ...

N = 1.71025262804115

STEP 3: Convert Result to Output's Unit

1.71025262804115 --> No Conversion Required

FINAL ANSWER

1.71025262804115 ≈ 1.710253 <-- Number of Floodlighting Units

(Calculation completed in 00.020 seconds)

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Created by Aman Dhussawat

GURU TEGH BAHADUR INSTITUTE OF TECHNOLOGY (GTBIT), NEW DELHI

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< 6 Methods of Lighting Calculators

Intensity of Light Transmitted

Go Intensity of Transmitted Light = Intensity of Light Entering the Material*exp(-Absorption Coefficient*Path Length)

Number of Floodlighting Units

Go Number of Floodlighting Units = (Area to be Lighted*Illumination Intensity)/(0.7*Lumen Flux)

Spectral Transmission Factor

Go Spectral Transmission Factor = Transmitted Spectral Emission/Spectral Irradiation

Spectral Reflection Factor

Go Spectral Reflection Factor = Reflected Spectral Emission/Spectral Irradiation

Spectral Luminous Efficacy

Go Spectral Luminous Efficacy = Maximum Sensitivity*Photopic Efficiency Value

Luminance for Lambertian Surfaces

Go Luminance = Illumination Intensity/pi

< 16 Advanced Illumination Calculators

Beer-Lambert Law

Go Intensity of Transmitted Light = Intensity of Light Entering the Material*exp(-Absorption per Concentration Coefficient*Concentration of Absorption Material*Path Length)

Fresnel's Law of Reflection

Go Reflection Loss = (Refractive Index of Medium 2-Refractive Index of Medium 1)^2/(Refractive Index of Medium 2+Refractive Index of Medium 1)^2

Refracted Angle using Snell's Law

Go Refracted Angle = arcsinh((Refractive Index of Medium 1*sin(Incident Angle))/(Refractive Index of Medium 2))

Incident Angle using Snell's Law

Go Incident Angle = arcsinh((Refractive Index of Medium 2*sin(Refracted Angle))/(Refractive Index of Medium 1))

Intensity of Light Transmitted

Go Intensity of Transmitted Light = Intensity of Light Entering the Material*exp(-Absorption Coefficient*Path Length)

Illumination by Lambert Cosine Law

Go Illumination Intensity = (Luminous Intensity*cos(Illumination Angle))/(Length of Illumination^2)

Number of Floodlighting Units

Go Number of Floodlighting Units = (Area to be Lighted*Illumination Intensity)/(0.7*Lumen Flux)

Lambert's Cosine Law

Go Illuminance at Angle of Incidence = Illumination Intensity*cos(Incident Angle)

Spectral Transmission Factor

Go Spectral Transmission Factor = Transmitted Spectral Emission/Spectral Irradiation

Spectral Reflection Factor

Go Spectral Reflection Factor = Reflected Spectral Emission/Spectral Irradiation

Utilization Factor of Electrical Energy

Go Utilization Factor = Lumen Reaching Working Plane/Lumen Emitting from Source

Spectral Luminous Efficacy

Go Spectral Luminous Efficacy = Maximum Sensitivity*Photopic Efficiency Value

Inverse Square Law

Go Luminance = Intensity of Transmitted Light/Distance^2

Specific Consumption

Go Specific Consumption = (2*Input Power)/Candle Power

Luminance for Lambertian Surfaces

Go Luminance = Illumination Intensity/pi

Luminous Intensity

Go Luminous Intensity = Lumen/Solid Angle

Number of Floodlighting Units Formula

Number of Floodlighting Units = (Area to be Lighted*Illumination Intensity)/(0.7*Lumen Flux)
N = (A_light*E_v)/(0.7*Φ_B)

How many flood lights do I need?

That depends on the space you wish to illuminate. Small areas such as outdoor footpaths and doorways would need around 1,500–4,000 lm. Small yards, store forecourts, and driveways would need around 6,000–11,000 lm. Larger areas require 13,000–40,500 lm for roads and parking lots.

How to Calculate Number of Floodlighting Units?

Number of Floodlighting Units calculator uses Number of Floodlighting Units = (Area to be Lighted*Illumination Intensity)/(0.7*Lumen Flux) to calculate the Number of Floodlighting Units, The Number of Floodlighting Units formula is defined as the flooding of large surfaces with light through powerful projectors, where the light sources are concentrated into narrow light beams using specific reflectors is known as flood lighting. Number of Floodlighting Units is denoted by N symbol.

How to calculate Number of Floodlighting Units using this online calculator? To use this online calculator for Number of Floodlighting Units, enter Area to be Lighted (A_light), Illumination Intensity (E_v) & Lumen Flux (Φ_B) and hit the calculate button. Here is how the Number of Floodlighting Units calculation can be explained with given input values -> 1.710476 = (8.98*1.02)/(0.7*7.651).

FAQ

What is Number of Floodlighting Units?

The Number of Floodlighting Units formula is defined as the flooding of large surfaces with light through powerful projectors, where the light sources are concentrated into narrow light beams using specific reflectors is known as flood lighting and is represented as N = (A_light*E_v)/(0.7*Φ_B) or Number of Floodlighting Units = (Area to be Lighted*Illumination Intensity)/(0.7*Lumen Flux). Area to be Lighted defined by their light distribution, with some consideration of potential application as well, Illumination intensity refers to the level or strength of light in a given area. It quantifies the amount of light reaching a surface and is typically measured in units such as lux or foot-candles & Lumen flux is often used as an objective measure of the useful light emitted by a light source.

How to calculate Number of Floodlighting Units?

The Number of Floodlighting Units formula is defined as the flooding of large surfaces with light through powerful projectors, where the light sources are concentrated into narrow light beams using specific reflectors is known as flood lighting is calculated using Number of Floodlighting Units = (Area to be Lighted*Illumination Intensity)/(0.7*Lumen Flux). To calculate Number of Floodlighting Units, you need Area to be Lighted (A_light), Illumination Intensity (E_v) & Lumen Flux (Φ_B). With our tool, you need to enter the respective value for Area to be Lighted, Illumination Intensity & Lumen Flux and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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