About Louver Free Area Calculator (Formula)
The Louver Free Area Calculator is used to determine the amount of free area available in a louver, which is the open space through which air can pass. The calculation is based on the dimensions and characteristics of the louver.
The formula to calculate the free area of a louver depends on the type of louver and its design. Here are a few common formulas used for different types of louvers:
- For a single blade, stationary louver: Free Area = (Blade Height – Blade Thickness) * (Blade Length – Blade Spacing) / Blade Length
In this formula, Blade Height refers to the height of the louver blade, Blade Thickness is the thickness of the blade, Blade Length is the length of the blade, and Blade Spacing is the distance between adjacent blades.
- For a multiple blade, stationary louver: Free Area = (Sum of Blade Heights – Sum of Blade Thicknesses) * (Blade Length – Blade Spacing) / Blade Length
This formula is similar to the previous one but takes into account the total height and thickness of all the blades in the louver.
- For adjustable or operable louvers: Free Area = (Blade Height – Blade Thickness) * Blade Length / Blade Length
In this formula, the free area is calculated based on the dimensions of a single blade, assuming all blades are in the fully open position.
It’s important to note that these formulas provide an estimate of the free area and may not account for factors such as air resistance, blade angle, or other design considerations. Manufacturers often provide specific data or performance charts for their louvers, which should be consulted for accurate calculations.
When using the Louver Free Area Calculator, ensure that the units of measurement are consistent throughout the calculation, such as inches or square feet. Additionally, the dimensions and parameters used in the formula should be measured or obtained from reliable sources to achieve accurate results.