Venturi Scrubber Design Calculation Xls Upd

Older spreadsheets often rely on classical models from the 1970s—Johnstone, Calvert, or Yung models. While foundational, they lack:

An updated XLS incorporates recent empirical correlations from Aerosol Science and Technology (2020–2025) and allows for:

[ \eta = 1 - \exp\left(-k \cdot \fracLG \cdot \sqrt\frac\Delta P\mu_g\right) ]

Where k is the empirical constant. The UPD spreadsheet allows users to fit k based on dust type (fly ash: k≈0.15, silica: k≈0.22, oil-fired soot: k≈0.09).

| Parameter | Formula | Typical Range / Notes | |-----------|---------|------------------------| | Throat velocity ( v_t = \fracQ_gA_t ) | ( Q_g ) = gas flow rate (m³/s), ( A_t ) = throat area (m²) | 50–150 m/s | | Pressure drop (Calvert model) | ( \Delta P = 1.03 \times 10^-3 \cdot v_t^2 \cdot \fracLG ) (SI units) | 5–150 kPa (20–600 in H₂O) | | Liquid-to-gas ratio (L/G) | ( \fracLG = \fracQ_lQ_g ) (L/m³ or gal/1000 ft³) | 0.5–5 L/m³ typical | | Collection efficiency (for particle dia (d_p)) | ( \eta = 1 - \exp\left( - \fracK \cdot L/G \cdot v_td_p \cdot \Delta P \right) ) (simplified) | 95–99% for >1 µm | | Throat length | ( L_t = 3 \cdot d_t ) (common rule of thumb) | 0.2–1 m |

Many Excel tools use Johnstone’s or Calvert’s model for efficiency and pressure drop.

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To design an effective Venturi scrubber calculation in Excel, you must structure your spreadsheet to handle input parameters, intermediate calculations for throat velocity, and final outputs for pressure drop and collection efficiency. 1. Input Parameters

Define these essential inputs in your spreadsheet's dedicated "Inputs" section: Gas Properties: Flow rate ( Qgcap Q sub g ), temperature ( Tgcap T sub g ), pressure ( ), moisture content, and molecular weight ( MWgascap M cap W sub g a s end-sub Liquid Properties: Flow rate ( Qlcap Q sub l ), temperature ( Tlcap T sub l ), density ( ρlrho sub l ), viscosity ( μlmu sub l ), and surface tension ( Particle Properties: Mean particle size ( ), particle density ( ρprho sub p ), and required removal efficiency ( 2. Calculating Throat Velocity ( )

Throat velocity is the most critical sizing parameter, typically ranging between

. Use the following steps to calculate it based on a required collection efficiency: Cunningham Slip Correction Factor ( ):

C=1+(0.000621⋅Tgdp⋅106)cap C equals 1 plus open paren the fraction with numerator 0.000621 center dot cap T sub g and denominator d sub p center dot 10 to the sixth power end-fraction close paren Tgcap T sub g is in Kelvin ( is in meters ( Inertial Impaction Parameter ( ):

ψ=(ln(1−η)k⋅R)2psi equals open paren the fraction with numerator l n open paren 1 minus eta close paren and denominator k center dot cap R end-fraction close paren squared is a correlation coefficient (typically is the liquid-to-gas ratio in Final Throat Velocity ( ):

vt=ψ⋅9⋅μg⋅dlC⋅dp2⋅ρpv sub t equals the fraction with numerator psi center dot 9 center dot mu sub g center dot d sub l and denominator cap C center dot d sub p squared center dot rho sub p end-fraction

is the mean droplet diameter, often calculated using the Nukiyama & Tanasawa correlation. 3. Pressure Drop Calculation ( ΔPcap delta cap P )

The pressure drop determines the energy cost of the system. A common formula is the Hesketh Equation:

ΔP=0.532⋅vt2⋅ρg⋅At0.133⋅(0.56+16.6⋅(Ql/Qg)+40.7⋅(Ql/Qg)2)cap delta cap P equals 0.532 center dot v sub t squared center dot rho sub g center dot cap A sub t to the 0.133 power center dot open paren 0.56 plus 16.6 center dot open paren cap Q sub l / cap Q sub g close paren plus 40.7 center dot open paren cap Q sub l / cap Q sub g close paren squared close paren : Throat velocity ( ρgrho sub g : Gas density ( kg/m3kg/m cubed Atcap A sub t : Throat area ( m2m squared : Volumetric liquid-to-gas ratio. 4. Equipment Sizing (Output Section)

Once the throat velocity is established, calculate the physical dimensions: Throat Area ( Atcap A sub t ): Throat Diameter ( Dtcap D sub t ):

(4⋅At)/πthe square root of open paren 4 center dot cap A sub t close paren / pi end-root Throat Length ( Ltcap L sub t ): Often sized as Diverging Section Length ( Ldcap L sub d ): Often sized as

For pre-built templates and detailed examples, you can refer to existing Venturi Scrubber Design Calculations on Scribd or technical resources from Cheresources. Design Equations For Venturi Scrubbers

To design a Venturi scrubber and build an automated calculation spreadsheet, you must focus on three core areas: gas humidification throat sizing (based on required efficiency), and pressure drop estimation 1. Identify Target Efficiency and Throat Velocity venturi scrubber design calculation xls upd

The efficiency of a Venturi scrubber is a function of the inertial impaction of particles on liquid droplets. Fractional Efficiency ( Typically 99% or higher. Inertial Impaction Parameter ( Calculate the required value for a target efficiency:

psi equals open paren the fraction with numerator l n open paren 1 minus eta close paren and denominator k center dot cap R end-fraction close paren squared : Correlation coefficient (typically 0.1 to 0.2). : Liquid-to-gas ratio ( Calculate Throat Velocity (

v sub t equals the fraction with numerator psi center dot 9 center dot mu sub g center dot d sub l and denominator cap C center dot d sub p squared center dot rho sub p end-fraction

: Mean droplet diameter (calculated via Nukiyama & Tanasawa correlation). : Cunningham Slip correction factor. : Gas viscosity. 2. Determine Physical Dimensions

Once you have the required velocity, size the mechanical components. Throat Area ( cap A sub t cap Q sub g s a t end-sub is the saturated gas flow rate. Throat Diameter ( cap D sub t Standard Geometry Ratios: Throat Length: Diverging Section Length: 3. Estimate Pressure Drop ( cap delta cap P

The pressure drop determines the fan power required. Use the Hesketh Equation for high accuracy:

cap delta cap P equals 0.532 center dot v sub t squared center dot rho sub g center dot cap A sub t to the 0.133 power center dot open paren 0.56 plus 16.6 center dot the fraction with numerator cap Q sub l and denominator cap Q sub g end-fraction plus 40.7 center dot open paren the fraction with numerator cap Q sub l and denominator cap Q sub g end-fraction close paren squared close paren Typical Ranges:

Pressure drops often range from 10 to 100 inches of water column (in. W.C.) depending on particle size and efficiency needs. 4. Excel/XLS Spreadsheet Structure

Organize your "upd" (updated) spreadsheet with these specific input/output blocks: Parameters to Include Gas flow rate (ACFM), Inlet Temp ( ), Moisture content (%), Particle size ( ), Target Efficiency ( Fluid Properties Gas density ( ), Gas viscosity ( ), Liquid-to-Gas ratio (L/G: typically 4–20 gal/1000 Intermediate

Saturated gas flow rate, Cunningham Slip factor, Mean droplet diameter ( Throat Diameter Pressure Drop cap delta cap P Fan Power requirement Actionable Next Step: ready-to-use template

Several papers and calculation tools focus on the design of venturi scrubbers, often providing the fundamental equations for pressure drop and particle collection efficiency that are typical of Excel-based design templates. Key Design Resources and Papers

Venturi Scrubber Design Calculations (Scribd): This document serves as a direct reference for a venturi scrubber design .xls template. It includes input parameters like gas flow rate (e.g., 110,000 ACFM), temperature, and moisture content, and provides calculations for throat velocity, diameter, and section lengths.

Venturi Scrubber Performance Model (EPA): An authoritative report detailing simplified equations derived from Calvert's and Boll's models. It is ideal for programmers or engineers looking to build or verify their own Excel performance models.

Design and Analysis of Venturi Scrubber (JETIR): A research paper that walks through a step-by-step design case study, including psychrometric chart usage for gas humidification and saturated humidity calculations at high temperatures.

Venturi Scrubber Modelling and Optimization (ResearchGate): This paper focuses on the theoretical models for liquid injection and flux distribution, which are critical for optimizing the throat region where the majority of collection occurs. Core Calculation Parameters

If you are updating or creating an Excel tool, the following parameters from Scribd's design template are standard:

Gas Stream: Flow rate (ACFM), temperature, pressure, and moisture content. Throat Geometry: Velocity ( vthroatv sub t h r o a t end-sub ), diameter ( Dthroatcap D sub t h r o a t end-sub ), and length ( Lthroatcap L sub t h r o a t end-sub ). A common ratio for throat-to-diameter length is 3:1.

Liquid-to-Gas (L/G) Ratio: Typical values range around 20 gallons/1000 ACF for industrial applications. Performance Metrics: Pressure drop ( ΔPcap delta cap P

) and particle collection efficiency (often targeting >99%).

For peer-reviewed discussion on practical implementation, you can check threads on Cheresources, where engineers share and troubleshoot custom-made scrubber performance spreadsheets. Venturi Scrubber Design Calculations | PDF | Gases - Scribd

This paper outlines the technical framework for designing and calculating the performance of a Venturi scrubber Older spreadsheets often rely on classical models from

, focusing on pressure drop, collection efficiency, and geometric optimization. 1. Introduction to Venturi Scrubber Dynamics

Venturi scrubbers are high-energy contactors used primarily for removing submicron particulate matter from gas streams. The process relies on a high-velocity gas stream to atomize a scrubbing liquid into fine droplets. The differential velocity between these droplets and the dust particles facilitates , which is the primary mechanism of collection. 2. Core Design Parameters

To develop a robust calculation model (typically implemented in Excel/VBA), the following parameters must be defined: Gas Flow Rate ( cap Q sub g

The volumetric flow of the inlet gas, adjusted for temperature and pressure. Liquid-to-Gas Ratio ( Usually expressed as gallons per 1,000 cubic feet ( ) or liters per cubic meter ( ). Typical values range from 7 to 20 Throat Velocity ( cap V sub t

The gas velocity at the narrowest point, ranging from 150 to 450 feet per second (fps). 3. Pressure Drop Calculations ( cap delta cap P

The pressure drop is the most critical factor, as it directly correlates to both the energy consumption and the collection efficiency. The Calvert Equation is a standard for these calculations:

cap delta cap P equals 5.0 cross 10 to the negative 5 power center dot open paren cap V sub t close paren squared center dot open paren cap L / cap G close paren cap delta cap P is in inches of water ( cap V sub t is the throat velocity (fps). is the liquid-to-gas ratio ( Note: For more precise modeling, the Yong Equation

may be used to account for gas density and liquid surface tension variations. 4. Collection Efficiency and Particle Size The efficiency is determined by the Inertial Impaction Parameter ( . The relationship is defined as:

psi equals the fraction with numerator cap C prime center dot rho sub p center dot d sub p squared center dot cap V sub t and denominator 9 center dot mu sub g center dot cap D sub d end-fraction = Cunningham slip correction factor. = Particle density. = Particle diameter. = Gas viscosity. cap D sub d

= Mean droplet diameter (calculated via the Nukiyama-Tanasawa equation). 5. Implementation in Excel (XLSX/XLSM)

An effective design tool should be structured with the following modules: Input Sheet:

Gas composition, temperature, dust loading, and desired removal efficiency. Calculation Engine: Utilizing the equations above to solve for throat area ( cap A sub t ) and required pressure drop. Geometry Output:

Calculations for the converging section angle (typically 15-25°) and diverging section angle (typically 6-7° to minimize pressure recovery loss). Sensitivity Analysis: Tables showing how changes in

ratio affect the operating costs (Fan HP) versus efficiency. 6. Maintenance and Scalability Calculations should include a Scrubbing Liquor Saturation

check to ensure the gas is properly cooled and saturated before entering the throat. High-solids content in the recirculating liquid must be factored into the viscosity variables to maintain accuracy over time. or a specific VBA macro snippet

to automate the pressure drop iterations in your spreadsheet?

Even with an updated tool, design flaws occur:

| Mistake | Consequence | Solution in XLS | |--------|------------|----------------| | Using water properties for caustic scrubbing | Underestimates droplet size | Dropdown selector with liquid library (20+ fluids) | | Ignoring gas temperature drop (adiabatic saturation) | Overestimates gas density | Integrated psychrometric calculator | | Neglecting pressure recovery in diverging section | Oversized fan | Separate ΔP recovery factor (0.6–0.75) | | Using average velocity instead of throat peak velocity | Undersized throat | User warning if velocity uniformity <0.85 |

If you prefer to download a pre-made sheet, search specifically for these terms on engineering forums or document sharing sites (like Scribd or Academia.edu), though beware of potential malware on such sites. Reliable engineering sources include:

For Venturi scrubber design calculations, high-quality Excel templates typically follow standard engineering correlations like the Hesketh equation for pressure drop and the Calvert model for collection efficiency. You can find several specialized calculation tools and documented spreadsheets on Scribd, which hosts the Venturi Scrubber Design Calculation Xls. Key Design Parameters and Equations

A robust spreadsheet should automate the following core calculations: Pressure Drop ( ΔPcap delta cap P [ \eta = 1 - \exp\left(-k \cdot \fracLG

): Often calculated using the Hesketh Equation, which factors in throat velocity, gas density, and liquid-to-gas (

Collection Efficiency: Determined by the Calvert Equation, relating particle diameter and gas-liquid interaction to the "cut diameter". Sizing Dimensions: Calculation of throat area ( Atcap A sub t ), diameter ( Dthroatcap D sub t h r o a t end-sub

), and the lengths of the converging and diverging sections (typically 3:1 and 4:1 ratios).

Saturation Calculations: Determining the saturated gas flow rate based on inlet temperature and moisture content. Available Spreadsheet Resources

The following professional resources provide the mathematical framework and downloadable examples: Wet Scrubber Application Guide - Sly Inc.

The search for a "venturi scrubber design calculation xls upd" refers to a specific, widely-used Excel workbook designed for the technical sizing and performance evaluation of venturi scrubbers. 

This tool is favored for industrial applications such as boiler waste gas treatment and metal processing because it automates complex fluid dynamic correlations.  Core Capabilities & Features 

The "upd" (updated) versions of these calculation sheets typically include: 

Inlet Gas Humidification: Calculates the psychrometric changes as hot raw gas is saturated before entering the throat.

Dimensional Sizing: Determines the precise diameters and lengths for the converging, throat, and diverging sections based on target gas velocities.

Efficiency Modeling: Uses established models like the Calvert cut diameter method to predict collection efficiency for specific particle sizes.

Pressure Drop Estimation: Uses Hesketh or Young equations to calculate the energy requirement, which is critical since venturi scrubbers often operate at high pressure drops (10–25 inches of water).  Critical Design Parameters Included 

According to documentation from Cheresources and Scribd, the spreadsheet processes the following:  Throat Velocity (

): Typically optimized between 70–90 m/s for maximum particulate capture. Liquid-to-Gas Ratio (

): A primary driver for collection efficiency, usually ranging from 7 to 20 gallons per 1000 cubic feet of gas. Mean Droplet Diameter (

): Calculated via the Nukiyama & Tanasawa correlation to determine how effectively the liquid will atomize.  Typical Design Outputs  Users can expect a full mechanical and process summary: 

Saturated Gas Flow Rate: Essential for downstream equipment sizing. Physical Geometry: Specific ratios such as and are often standard defaults.

Make-up Liquid Requirements: Estimates the water or chemical solution needed to replace evaporative losses.  Where to Find the Spreadsheet 

The most comprehensive version is often hosted on Scribd as "143362690-Venturi-Scrubber-Design-xls".

Additional technical guides and PDFs explaining the underlying math are available via Cheresources and ResearchGate. 

To help you get the most out of these calculations, could you tell me if you're looking to design a new system or evaluate the performance of an existing one? Knowing your target particle size (in microns) would also help in selecting the right efficiency model.  Venturi Scrubber Design Calculations | PDF | Gases - Scribd

I understand you're looking for an update on Excel-based (XLS) design calculations for Venturi scrubbers. While I cannot directly provide or host spreadsheet files, I can give you a structured summary report of the key design parameters, typical calculation steps, and where to find updated tools or templates.

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