Venturi Scrubber Design Calculation Xls Upd

✅ Do’s

❌ Don’ts

In the world of industrial air pollution control, the Venturi scrubber remains one of the most efficient devices for removing particulate matter (PM) from high-temperature, corrosive, or sticky gas streams. Unlike baghouses or electrostatic precipitators, Venturi scrubbers handle variable loads and sticky particles with relative ease. However, their efficiency hinges on one critical factor: precision in design engineering.

For decades, engineers have relied on manual calculations, nomographs, and basic spreadsheets. But with tighter environmental regulations (e.g., EPA MACT standards, EU BREF documents) and the need for energy optimization, the demand for an updated Venturi scrubber design calculation XLS has skyrocketed. This article provides a deep dive into the core calculations, the latest updates in modeling approaches, and how to leverage modern spreadsheets to design high-performance systems.

✅ Reputable free/paid sources (as of 2026):

⚠️ Avoid random download sites – scan all XLS files for macros/viruses.

You can create a robust design tool by setting up an Excel sheet with the following columns and formulas.

For more complex calculations (like iterative solver for pressure drop), you can add this VBA code to your Excel file.

Function VenturiPressureDrop(V_Throat_FtSec As Double, LG_Ratio As Double) As Double
    ' Calculates Pressure Drop in inches of water column (in. w.c.)
    ' Based on simplified Calvert Equation
' V_Throat_FtSec: Gas velocity at throat (ft/sec)
    ' LG_Ratio: Liquid to Gas ratio (gal/1000 ft3)
VenturiPressureDrop = (V_Throat_FtSec ^ 2 * LG_Ratio) / 5050 * 0.001
End Function
Function VenturiEfficiency(Particle_Diameter_Micron As Double, LG_Ratio As Double, V_Throat_FtSec As Double, Gas_Density As Double, Liquid_Density As Double) As Double
    ' Simplified efficiency calculation based on Johnstone Equation
    ' Returns efficiency as a percentage (0-100)
Dim k As Double ' Empirical constant
    k = 0.00015 ' Typical value depending on geometry
Dim Nt As Double ' Number of transfer units
    Nt = k * (Particle_Diameter_Micron ^ 2) * V_Throat_FtSec * (Liquid_Density / Gas_Density) * (LG_Ratio / 1000)
Dim Eff As Double
    Eff = 1 - Exp(-Nt)
VenturiEfficiency = Eff * 100
End Function

You can then use these functions directly in your spreadsheet: =VenturiPressureDrop(300, 5) or =VenturiEfficiency(5, 8, 300, 0.075, 62.4)