Weep Point Velocity in Distillation Column Design Calculator

✖Weep Point Correlation Constant is a constant that depends on the depth of liquid available over the plate in a tray tower.ⓘ Weep Point Correlation Constant [K₂]			+10% -10%
✖Hole Diameter is the diameter of the holes from where the vapors enters into the tray in a tray tower.ⓘ Hole Diameter [d_h]			+10% -10%
✖Vapor Density in Distillation is defined as the ratio of mass to the volume of vapor at particular temperature in a distillation Column.ⓘ Vapor Density in Distillation [ρ_V]			+10% -10%

✖Weep Point Vapor Velocity Based on Hole Area is defined on the basis of hole area available to the vapor passing through the column.ⓘ Weep Point Velocity in Distillation Column Design [u_h]

⎘ Copy

👎

Formula

✖

Weep Point Velocity in Distillation Column Design

Formula

`"u"_{"h"} = ("K"_{"2"}-0.90*(25.4-"d"_{"h"}))/(("ρ"_{"V"})^0.5)`

Example

`"8.90133m/s"=("30"-0.90*(25.4-"0.005m"))/(("1.71kg/m³")^0.5)`

Calculator

LaTeX

Reset

👍

Download Process Equipment Design Formula PDF PDF Image

Weep Point Velocity in Distillation Column Design Solution

STEP 0: Pre-Calculation Summary

Formula Used

Weep Point Vapor Velocity Based on Hole Area = (Weep Point Correlation Constant-0.90*(25.4-Hole Diameter))/((Vapor Density in Distillation)^0.5)
u_h = (K₂-0.90*(25.4-d_h))/((ρ_V)^0.5)
This formula uses 4 Variables

Variables Used

Weep Point Vapor Velocity Based on Hole Area - (Measured in Meter per Second) - Weep Point Vapor Velocity Based on Hole Area is defined on the basis of hole area available to the vapor passing through the column.
Weep Point Correlation Constant - Weep Point Correlation Constant is a constant that depends on the depth of liquid available over the plate in a tray tower.
Hole Diameter - (Measured in Millimeter) - Hole Diameter is the diameter of the holes from where the vapors enters into the tray in a tray tower.
Vapor Density in Distillation - (Measured in Kilogram per Cubic Meter) - Vapor Density in Distillation is defined as the ratio of mass to the volume of vapor at particular temperature in a distillation Column.

STEP 1: Convert Input(s) to Base Unit

Weep Point Correlation Constant: 30 --> No Conversion Required
Hole Diameter: 0.005 Meter --> 5 Millimeter (Check conversion here)
Vapor Density in Distillation: 1.71 Kilogram per Cubic Meter --> 1.71 Kilogram per Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

u_h = (K₂-0.90*(25.4-d_h))/((ρ_V)^0.5) --> (30-0.90*(25.4-5))/((1.71)^0.5)

Evaluating ... ...

u_h = 8.9013304741778

STEP 3: Convert Result to Output's Unit

8.9013304741778 Meter per Second --> No Conversion Required

FINAL ANSWER

8.9013304741778 ≈ 8.90133 Meter per Second <-- Weep Point Vapor Velocity Based on Hole Area

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Chemical Engineering » Process Equipment Design » Column Design » Distillation Tower Design » Weep Point Velocity in Distillation Column Design

Credits

Created by Rishi Vadodaria

Malviya National Institute Of Technology (MNIT JAIPUR ), JAIPUR

Rishi Vadodaria has created this Calculator and 200+ more calculators!

Verified by Vaibhav Mishra

DJ Sanghvi College of Engineering (DJSCE), Mumbai

Vaibhav Mishra has verified this Calculator and 200+ more calculators!

< 25 Distillation Tower Design Calculators

Relative Volatility of Two Components Based on Normal Boiling Point and Latent Heat of Vaporization

Go Relative Volatility = exp(0.25164*((1/Normal Boiling Point of Component 1)-(1/Normal Boiling Point of Component 2))*(Latent Heat of Vaporization of Component 1+Latent Heat of Vaporization of Component 2))

Maximum Allowable Vapor Velocity given Plate Spacing and Fluid Densities

Go Maximum Allowable Vapor Velocity = (-0.171*(Plate Spacing)^2+0.27*Plate Spacing-0.047)*((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation)^0.5

Column Diameter given Maximum Vapor Rate and Maximum Vapor Velocity

Go Column Diameter = sqrt((4*Vapor Mass Flowrate)/(pi*Vapor Density in Distillation*Maximum Allowable Vapor Velocity))

Tower Cross Sectional Area given Gas Volumetric Flow and Flooding Velocity

Go Tower Cross Sectional Area = Volumetric Gas Flow/((Fractional Approach to Flooding Velocity*Flooding Velocity)*(1-Fractional Downcomer Area))

Minimum External Reflux given Compositions

Go External Reflux Ratio = (Distillate Composition-Equilibrium Vapor Composition)/(Equilibrium Vapor Composition-Equilibrium Liquid Composition)

Maximum Allowable Mass Velocity using Bubble Cap Trays

Go Maximum Allowable Mass Velocity = Entrainment Factor*(Vapor Density in Distillation*(Liquid Density-Vapor Density in Distillation)^(1/2))

Minimum Internal Reflux given Compositions

Go Internal Reflux Ratio = (Distillate Composition-Equilibrium Vapor Composition)/(Distillate Composition-Equilibrium Liquid Composition)

Dry Plate Pressure Drop in Distillation Column Design

Go Dry Plate Head Loss = 51*((Vapor Velocity Based on Hole Area/Orifice Coefficient)^2)*(Vapor Density in Distillation/Liquid Density)

Flooding Velocity in Distillation Column Design

Go Flooding Velocity = Capacity Factor*((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation)^0.5

Weep Point Velocity in Distillation Column Design

Go Weep Point Vapor Velocity Based on Hole Area = (Weep Point Correlation Constant-0.90*(25.4-Hole Diameter))/((Vapor Density in Distillation)^0.5)

Liquid Vapor Flow Factor in Distillation Column Design

Go Flow Factor = (Liquid Mass Flowrate/Vapor Mass Flowrate)*((Vapor Density in Distillation/Liquid Density)^0.5)

Downcomer Residence Time in Distillation Column

Go Residence Time = (Downcomer Area*Clear Liquid Backup*Liquid Density)/Liquid Mass Flowrate

Internal Reflux Ratio Based on Liquid and Distillate Flowrates

Go Internal Reflux Ratio = Liquid Reflux Flowrate/(Liquid Reflux Flowrate+Distillate Flowrate)

Column Diameter Based on Vapor Flowrate and Mass Velocity of Vapor

Go Column Diameter = ((4*Vapor Mass Flowrate)/(pi*Maximum Allowable Mass Velocity))^(1/2)

Head Loss in Downcomer of Tray Tower

Go Downcomer Headloss = 166*((Liquid Mass Flowrate/(Liquid Density*Downcomer Area)))^2

Height of Liquid Crest over Weir

Go Weir Crest = (750/1000)*((Liquid Mass Flowrate/(Weir Length*Liquid Density))^(2/3))

Active Area given Gas Volumetric Flow and Flow Velocity

Go Active Area = Volumetric Gas Flow/(Fractional Downcomer Area*Flooding Velocity)

Fractional Downcomer Area given Total Cross Sectional Area

Go Fractional Downcomer Area = 2*(Downcomer Area/Tower Cross Sectional Area)

Fractional Active Area given Downcomer Area and Total Column Area

Go Fractional Active Area = 1-2*(Downcomer Area/Tower Cross Sectional Area)

Internal Reflux Ratio Given External Reflux Ratio

Go Internal Reflux Ratio = External Reflux Ratio/(External Reflux Ratio+1)

Tower Cross Sectional Area given Fractional Active Area

Go Tower Cross Sectional Area = Active Area/(1-Fractional Downcomer Area)

Tower Cross Sectional Area given Active Area

Go Tower Cross Sectional Area = Active Area/(1-Fractional Downcomer Area)

Clearance Area under Downcomer given Weir Length and Apron Height

Go Clearance Area Under Downcomer = Apron Height*Weir Length

Fractional Active Area given Fractional Downcomer Area

Go Fractional Active Area = 1-Fractional Downcomer Area

Residual Head Loss in Pressure in Distillation Column

Go Residual Head Loss = (12.5*10^3)/Liquid Density

Weep Point Velocity in Distillation Column Design Formula

Weep Point Vapor Velocity Based on Hole Area = (Weep Point Correlation Constant-0.90*(25.4-Hole Diameter))/((Vapor Density in Distillation)^0.5)
u_h = (K₂-0.90*(25.4-d_h))/((ρ_V)^0.5)

What is Minimum Design Vapor Velocity in Distillation Column Design?

Minimum Design Vapor Velocity is a crucial parameter in the design of distillation columns. It represents the lowest vapor velocity that must be maintained in the column to prevent the entrainment or carryover of liquid droplets from the liquid phase into the vapor phase. Liquid entrainment can negatively impact the separation efficiency and performance of the distillation process.

What is the Importance of Minimum Vapor Velocity?

Maintaining vapor velocity above the Minimum Design Vapor Velocity in Distillation Column Design is critical for achieving the desired separation efficiency and product quality in a distillation column. It helps ensure that the liquid and vapor phases remain adequately separated, allowing for effective mass transfer and vapor-liquid equilibrium.

How to Calculate Weep Point Velocity in Distillation Column Design?

Weep Point Velocity in Distillation Column Design calculator uses Weep Point Vapor Velocity Based on Hole Area = (Weep Point Correlation Constant-0.90*(25.4-Hole Diameter))/((Vapor Density in Distillation)^0.5) to calculate the Weep Point Vapor Velocity Based on Hole Area, Weep Point Velocity in Distillation Column Design formula is defined as the minimum velocity that the vapor component must have in order to have a safe and efficient operation in tray tower. Weep Point Vapor Velocity Based on Hole Area is denoted by u_h symbol.

How to calculate Weep Point Velocity in Distillation Column Design using this online calculator? To use this online calculator for Weep Point Velocity in Distillation Column Design, enter Weep Point Correlation Constant (K₂), Hole Diameter (d_h) & Vapor Density in Distillation (ρ_V) and hit the calculate button. Here is how the Weep Point Velocity in Distillation Column Design calculation can be explained with given input values -> 8.90133 = (30-0.90*(25.4-0.005))/((1.71)^0.5).

FAQ

What is Weep Point Velocity in Distillation Column Design?

Weep Point Velocity in Distillation Column Design formula is defined as the minimum velocity that the vapor component must have in order to have a safe and efficient operation in tray tower and is represented as u_h = (K₂-0.90*(25.4-d_h))/((ρ_V)^0.5) or Weep Point Vapor Velocity Based on Hole Area = (Weep Point Correlation Constant-0.90*(25.4-Hole Diameter))/((Vapor Density in Distillation)^0.5). Weep Point Correlation Constant is a constant that depends on the depth of liquid available over the plate in a tray tower, Hole Diameter is the diameter of the holes from where the vapors enters into the tray in a tray tower & Vapor Density in Distillation is defined as the ratio of mass to the volume of vapor at particular temperature in a distillation Column.

How to calculate Weep Point Velocity in Distillation Column Design?

Weep Point Velocity in Distillation Column Design formula is defined as the minimum velocity that the vapor component must have in order to have a safe and efficient operation in tray tower is calculated using Weep Point Vapor Velocity Based on Hole Area = (Weep Point Correlation Constant-0.90*(25.4-Hole Diameter))/((Vapor Density in Distillation)^0.5). To calculate Weep Point Velocity in Distillation Column Design, you need Weep Point Correlation Constant (K₂), Hole Diameter (d_h) & Vapor Density in Distillation (ρ_V). With our tool, you need to enter the respective value for Weep Point Correlation Constant, Hole Diameter & Vapor Density in Distillation and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search