Control Valve Design Sizing Software...Calculation Routines Nomenclature Cv = Valve sizing...

Control Valve Design

Sizing Software

Control Valve Design

Sizing Software

#03-12 Block Aronia, Jalan Sri Perkasa 2

Taman Tampoi Utama

81200 Johor Bahru

Malaysia

SOLUTIONS, STANDARDS AND SOFTWARE

www.klmtechgroup.com

Introduction• A control valve is a variable orifice used to regulate the

flow of a process fluid in accordance with requirement of process.

• Control valve is most used final control element in closed loop.

• It is designed to absorb the proper amount of pressure drop to maintain system balance under all operating condition.

Introduction

KLM Technology Group Control valve program

assist in calculating control valve sizing, which

focuses on the engineering uses of fluid

properties in the process industries.

Control valve program considers:

� Liquid flow

� Vapor flow

Introduction

Liquid Flow

Vapor Flow

Perform Calculations

• Calculate either Control valve size, Flow rate or Pressure drop

• Calculate the cavitation index

• Calculate the noise level

• Supply typical valve data

• Supply or calculate the fluid properties at flow conditions

• Supply pipe sizes

• Use English or SI engineering units in any mixture

• Use mass or volume flow units

• Import process data

• Print a calculation sheet

• Save the data

Control Valve Calculation for Liquids

Engineering Units

Fluid Properties

Calculation Options

Editing Data

Filing and Moving On

Engineering Units

Mass flow – English units

Ex. Pounds per hour and degrees Fahrenheit

Volume Flow – English units

Ex. US gallons per minute and degrees Fahrenheit

Mass Flow – SI units

Ex. Kilograms per second and degrees Celsius

Volume Flow – SI units

Ex. Liters per second and degrees Celsius

Engineering Units Cont’d

User file units

It is used to customize or change to required units that can be

implemented by selecting the option Review units

Review units

It shows the available options and the current unit selection.

To change units :

• Select the required units

• Select OK or

• Save to record the desired units to computer only

Fluid Properties

• Enabled when the pressure and temperature

are entered

• Available :

� Pure Liquids

�Mixtures

Fluid Properties Cont’d

Pure Liquids

• Find the desired fluid name

• Select (or double-click) it

• The fluid properties will be entered

Fluid Properties Cont’d

Mixtures

• Select the first component

• In the component box, enter the percentage

• Continue until the remaining percentage equals zero

• Click calculate button in the component box and the program

will calculate and enter the mixture values

Calculate

To obtain calculation results, it can be done by

click the Case button. Then, the output data will

display the results.

Calculation Options

Calculation options are

• Valve size

• Flow rate

• Pressure drop

Filing and Moving On

• Program menu – It clears the calculation and returns to the main menu.

• New – It clears the screen for a new calculation.

• Save - It saves a new record if not previously saved or saves changes to an existing record to database. It is also used for saving temporary data, thus, the recorded data can be done printing calculation process.

• Export data – It saves input and output calculation record in *csv file.

• Import data – It opens *csv file record.

• Print calculation – It is enabled after calculation and save is made. It displays the screen to print a calculation.

• Exit – It leaves the program

Pressure Loss Calculation for Gasses

Engineering Units

Fluid Properties

Calculation Options

Editing Data

Filing and Moving On

Engineering Units

Mass flow – English units

Ex. Pounds per hour and degrees Fahrenheit

Volume Flow – English units

Ex. Standard cubic feet per minute and degrees Fahrenheit

Mass Flow – SI units

Ex. Kilograms per second and degrees Celsius

Volume Flow – SI units

Ex. Standard cubic decimeters per second and degrees Celsius

Engineering Units Cont’d

User file units

It is used to customize or change to required units that can be

implemented by selecting the option Review units

Review units

It shows the available options and the current unit selection.

To change units :

• Select the required units

• Select OK or

• Save to record the desired units to computer only

Fluid Properties

• Enable when the pressure and temperature are

entered

• Available :

� Saturated Steam

� Superheated steam

� Pure Gas

�Mixtures

Fluid Properties Cont’d

Pure Gasses

• Find the desired fluid name

• Select (or double-click) it

• The fluid properties will be entered

Fluid Properties Cont’d

Mixtures

• Select the first component

• In the component box, enter the percentage

• Continue until the remaining percentage equals zero

• Click calculate button in the component box and the program

will calculate and enter the mixture values

Calculation Routines

Liquid

• Calculate preliminary valve sizing coefficient

ρ⋅∆=

P

W

preVC 3.63

• Calculate Reynolds Number Factor

Where,

and

Calculation Routines

655.0

358.0044.1

−=

VT

VSR

C

CF

6667.0

23500

1

∆⋅⋅⋅

=PSG

W

FC

SVS

µ

1667.0

2

22

333.0

6667.0

1890

+

⋅⋅

=d

CF

F

FF VL

L

dS

Calculation Routines

• Calculate the final valve size

For turbulent flow

For transition flow For laminar flow

For Choked or flashing flow

PF

VinaryCe

VC

limPr

=

RF

VinaryCe

VClimPr

= VSCVC =

ρ⋅⋅=

vcPLPF

WVC 3.63

Calculation Routines

Gas

• Calculate the preliminary valve size

ρ11

3.63 PX

W

preVC =

Calculation Routines

• Calculate the final size

Normal condition

Critical condition

YPF

VinaryCe

VC

limPr=

YPPF

MWTX

kF

ZTW

VC

⋅⋅⋅

⋅⋅⋅

=1

3.19

Calculation Routines

• Calculate the minimum size for sonic velocity

MW

T

P

Wd 1

2

0454.0min

=

Calculation Routines

Nomenclature

Cv = Valve sizing coefficient, dimensionless

d = Nominal valve size, inches

D1 = Inside diameter of inlet piping, inches

D2 = Outside diameter of inlet piping, inches

= Fluid density, lb/ft3

Fd = Valve style modifier, dimensionless

k = Ratio of specific heats, dimensionless

Fk = Ratio of specific heats factor, dimensionless

FL = Rated pressure recovery factor, dimensionless

FLP = Combined liquid pressure recovery factor, dimensionless

FP = Piping geometry factor, dimensionless

FR = Reynolds number factor, dimensionless

MW = Molecular weight, dimensionless

Ms = Mach number, dimensionless

P1 = Upstream absolute pressure, psia

P2 = Downstream absolute pressure, psia

Pc = Critical pressure, psia

Calculation Routines

Nomenclature (Cont’d)

PVAP = Vapor pressure, psia

ΔP = Valve pressure drop, psia

SG = Spesific gravity, dimensionless

SL = Sound pressure level, dBA

SLG = Gas property factor, dBA

t = Pipe wall thickness, inches

T = Absolute upstream temperature, deg R

Re = Reynolds number, dimensionless

W = Mass flow, lb/hr

X1 = Pressure drop ratio, dimensionless

XT = Rated pressure drop ratio factor, dimensionless

XTP = Value of XT for valve/reducer assembly, dimensionless

Y = Expansion factor, dimensionless

ɳ = Acoustic efficiency, dimensionless

Calculation Printout

• This program will print the input and output calculation data and one associated comment. The comment is included in the data sheet for reference purposes.

• It also creates the default printout headings. The headings are printed at the top of all printouts.

• File � Save � Print Calculation

Calculation Printout , Cont’d

Save. Saves the headings

Cancel. Returns to the calculation form without printing

OK. View report calculation, then prints the headings and calculation using the Windows Print Manager.

Calculation Printout , Cont’d

Importing Data into a Calculation

To Import process data into a calculation :

Make a sequential file for each calculation. Files to have a

filename(Suggest the tag number) with no extension (eg CV-

LiquidFlow-3).

• Take the Import data menu option.

Importing Data into a Calculation , Cont’d

• Find the required file. (Using standard Windows procedures)

• Select the file and the data will be loaded.

• If the import is successful it will appear

the following information

• Proceed with the calculation and save the data.

Installation

• Click Hydraulics Ver1.0_Setup.exe � Click Next

• Enter your registration (Name, Company and Registration code), click Next

Installation Cont’d

• Click Next on Directory page

Installation Cont’d

• Install On process

Installation Cont’d

• Install .NET Framework 4 for requirement

system( if NOT Exist on PC)

• Install Crystal Report for requirement system

(if NOT exist on PC)

Installation Cont’d

• If the installation is complete it will display a confirmation

• Click Exit

Installation Cont’d

• Enter password application and click OK

• Applications will be open

In designing equipment and piping systems, engineers

need control valve sizing calculation properly by various

variables such as flow rate, pressure drop, valve and

pipe size, fluid properties, etc. Valve type is also

considered in control valve calculation.

KLM Control valve program is very useful to calculate

proper valve size, flow rate, and pressure drop based on

conditions inputed.

Control Valve Design and Sizing Software

Piping Hydraulic Line Design and Sizing Software

This is one of the best stand alone control valve sizing

programs available.

1. Liquid and gas, steam or vapor flow options.

2. Multiple units of measure choices - mass or volume

3. Physical properties based on chosen temperature

and pressure

4. The ability to estimate noise levels

Purchasing Software

Control Valve Design and Sizing

Program

USD $ 299.95

For detailed information :

info@klmtechgroup.com