The formula to calculate the number of Par (Lumen Light) required is:
\[ PL = \frac{A \times L}{E} \]
Where:
A Par (Parabolic Aluminized Reflector) Lumen Light is a type of electric lamp that is widely used in commercial, residential, and transportation illumination. It utilizes a parabolic reflector to direct the light, and an aluminized coating to enhance its brightness. The term “lumen” refers to the measure of the total quantity of visible light emitted by a source, indicating the light output or brightness of the lamp. Therefore, a Par Lumen Light is a high-intensity light source that provides a significant amount of visible light.
Let's say you have an area of 500 square feet, require 50 lumen per square foot, and the efficiency of your light source is 80 lumen per watt. Using the formula:
\[ PL = \frac{500 \times 50}{80} \]
We get:
\[ PL = 312.5 \]
So, you would need approximately 312.5 Par Lumen Lights for the specified area.