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Ductwork Design Calculator

1. Air Velocity
Ventilation
Building
from m/with
to m/with
2. Material/cross-section
Duct Material
Duct Cross-Section
Ratio h/b
Height h mm
Width b mm
3. Local Resistances on the Section
Duct Detail
Coefficient
№ section
4. Calculation
№ section Cross-Section Flow Rate, m3/h Recommended Velocity, m/with Required Area, m2 Length, m Required Cross-Section, mm Accepted Cross-Section, mm
Equivalent Diameter, mm Velocity, m/with Pressure Loss per Meter, Pa/m b_sh Friction Pressure Loss, Pa Type of Local Resistance Local Resistance, Pa Dynamic Pressure Pd, Pa Pressure Loss in Local Resistances, Pa Total Pressure Loss, Pa
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The Ductwork Design Calculator is created to compute essential duct parameters for the efficient performance of duct systems. With this tool, you can determine optimal duct sizes, calculate air velocity, and assess pressure drops along various duct segments. This calculator is invaluable for engineers and ductwork system designers.

Calculator features:

  • Automatic or manual input for air velocity in the ducts.
  • Selection of duct material and cross-sectional shape (round, rectangular, or square).
  • Ability to add duct segments with local resistance considerations, select duct fittings, and specify their characteristics.
  • Calculation of pressure drops and determination of required duct cross-sectional area.
  • Export of calculation results in .xls format for further analysis.

Steps for using the calculator:

  1. Select the method for specifying air velocity: automatic or manual.
  2. Add the necessary duct segments by choosing the material and cross-sectional shape.
  3. Specify local resistances for each segment by selecting the appropriate system elements.
  4. Input flow rate and segment length parameters to perform the calculations.
  5. Click the "Calculate" button to obtain the required data on duct cross-sectional area, pressure, and losses.

The calculation results will include essential parameters such as duct cross-sectional area, equivalent diameter, pressure drops, dynamic pressure, and local resistance factors. This data will assist you in designing duct systems accurately, ensuring their efficiency and durability.

The Ductwork Design Calculator will become an indispensable tool when designing duct systems of any scale. Use it to optimize costs and enhance the performance of your ventilation projects.