Now let’s flesh out the Excel side of each block.
) is the most critical factor driving the operating cost of a Venturi scrubber. The Calvert model provides an accurate estimation of pressure drop across the throat:
To create a "solid" calculation XLS, organize your sheets as follows: Venturi Scrubber Design Equations | PDF | Gases - Scribd
This guide explores the fundamental design equations and provides a structured approach to building a calculation spreadsheet. Fundamental Principles of Venturi Scrubbers A Venturi scrubber consists of three main sections:
If you are updating an older Venturi calculation sheet, integrate these modern spreadsheet practices: venturi scrubber design calculation xls upd
Based on the process gas flow rate and your target throat velocity, calculate the throat area ( Atcap A sub t
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The liquid-to-gas ratio is a critical parameter for matching collection efficiency targets. Standard engineering units are liters of liquid per cubic meter of gas ( L/m3L/m cubed
Typically ranges from 60 to 150 m/s. Higher velocities increase efficiency but also increase pressure drop and energy costs. Throat Area ( cap A sub t Calculated as Critical Dimensions: Throat Length ( cap L sub t Often taken as 3 times the throat diameter ( cap D sub t Diverging Section Length ( cap L sub d Now let’s flesh out the Excel side of each block
Pt=1−η=exp(−k⋅LG⋅ψ)cap P t equals 1 minus eta equals exp open paren negative k center dot the fraction with numerator cap L and denominator cap G end-fraction center dot psi close paren
Step 3: Mean Droplet Diameter Estimation (Nukiyama and Tanasawa)
Power (kW)=Qact×ΔPηfan×1000Power (kW) equals the fraction with numerator cap Q sub a c t end-sub cross cap delta cap P and denominator eta sub f a n end-sub cross 1000 end-fraction ηfaneta sub f a n end-sub is the fan static efficiency (typically 4. Updates & Enhancements for Modern Excel Sheets ( upd )
The matching spreadsheet verified an overall collection efficiency exceeding for PM10 particles using a design liquid-to-gas ratio of If you are building out this design sheet, let me know: Throat Area ( cap A sub t Calculated
The primary mechanism for particle capture in a Venturi scrubber is inertial impaction. Droplets formed via gas shear cross paths with incoming dust particles, encapsulating them into the liquid phase. Aerodynamic Cut Diameter The inertial impaction parameter ( Kpcap K sub p
A venturi scrubber operates on the principle of inertia separation. The design consists of three primary sections:
The engineering calculation must satisfy both mechanical safety thresholds and emission compliance limits before fabrication begins.
When updating ( upd ) your Excel or XLS sheet, structure your tabs logically to avoid circular references and maintain clear auditing: