Calculation Summary Document ID
705 - XXX - XXX
SF-EG301-002E
Client Reference #
Page
Prepared By: ANISH CHANDRAN
1
of
2
Date: 3-Feb-11
(Print & Sign)
Reviewed By:
Date:
(Print & Sign)
Approved By:
Date:
(Print & Sign) Note: Approval sign off requirement determined by Project Engineer and/or Project Manager.
Calculation Title:
Summary:
VALVE SIZING CALCULATION (For Estimation)
For WATER with inlet pressure of 314.7 psia and outlet pressure of 289.7 psia, and pipe line size of 8 inch, selected a valve of nominal diameter 4 inch. The valve has a CV value of 124 and a percentage opening of 70 degrees. NO CHOCKING PHENOMENON observed.
SF-EG301-002E Calculation Summary EXCEL
Jan 2011
Calculation Summary Document ID
705 - XXX - XXX
SF-EG301-002E
Client Reference #
Page
PURPOSE:
METHOD OF ANALYSIS:
COMPUTER CODE USED:
NOMENCLATURE:
REQUIREMENTS/COMMENTS:
DATA:
ASSUMPTIONS:
LEVEL OF ACCURACY:
SKETCH:
ANALYSIS:
RESULTS:
CONCLUSIONS/RECOMMENDATIONS:
APPENDIX:
SF-EG301-002E Calculation Summary EXCEL
2
of
2
CONTROL VALVE SIZING (for estimation)
EXCEL SHEET
NA
NA
NA
NA FOR A SINGLE PHASE FLOW (BASED ON FISCHER CONTROL VALVE HANDBOOK) FOR ESTIMATION PURPOSE
NA
BASED ON FISCHER CONTROL VALVE HANDBOOK
Ref SUMMARY
Ref SUMMARY
NA
Jan 2011
Calculation Worksheet Document ID
705 - XXX - XXX
Client Reference #
TITLE: SCREW FEEDER CALCULATIONS (Example) 3-Feb-11 PREPARED BY: ANISH DATE:
REVIEWED BY:
(Print & Sign)
(Print & Sign)
SF-EG301-001G
TORONTO OFFICE SHEET: DATE:
PURPOSE : To SIZE AND SELECT VALVES FOR SINGLE PHASE FLOW
REQUIREMENTS :
To SIZE VALVES FOR VALVE SIZE EQUAL TO OR GREATERT THAN LINE SIZE & WITH SINGLE PHASE FLOW
DATA : Media Valve size Pipe size Inlet Pressure
WATER 4 8
d D P1
inch inch psia
Outlet Pressure Discharge Minimum flow discharge
P2
psia
289.7
Q min
gpm
200
Operating flow discharge
Q operating gpm
650
Design flow discharge Temperature Specific Gravity of fluid
Q design
gpm °F
800
T Gf
314.7
70 0.5
Absolute Vapour pressure of fluid
(at inlet temperature)
Pv
psia
124.3
Absolute Critical pressure of fluid
(at inlet temperature)
Pc
psia
616.3
Recovery factor
(from page 5 - 195 of catalogue)
FL
0.82
Cv
224
CV of the proposed valve at 100% opening (from page 5 - 195 of catalogue) NOTE
Catalogue refers to FISCHER - ROSEMOUNT catalogue for easy - e valves Valve model selected is ED ; EQUAL PERCENTAGE (Ref Page : 5- 186) Valve has diameter of DN 100 (4'), Class #300, with shut off class II. Used for general process application with balanced trim and can withstand a temperature of upto 420° C (800 F)
SF-EG301-001E Calculation Worksheet EXCEL
3 of 10
Jan 2011
Calculation Worksheet Document ID
705 - XXX - XXX
Client Reference #
TITLE: SCREW FEEDER CALCULATIONS (Example) 3-Feb-11 PREPARED BY: ANISH DATE:
REVIEWED BY:
(Print & Sign)
(Print & Sign)
SF-EG301-001G
TORONTO OFFICE SHEET: DATE:
ANALYSIS : Cumulative resistance coefficients
ΣK = 1.5 x ( 1 - (d2 / D2) )2 Pipe geometry factor
Fp = * 1 + ( (ΣK / 890) x (CV /d2) 2 ] -0.5 Calculated Valve sizing coefficient
Cv = q / FP * √ (P1 -P2) / Gf OUTPUT Differential pressure Cumulative resistance coefficients
∆P ΣK
ΣK = 1.5 x ( 1 - (d2 / D2) )2
ΣK
2 2
) ]
-0.5
0.8438
0.9183 CV
Calculated Valve sizing coefficient Cv =
25
Fp
Pipe geometry factor Fp = [ 1 + ( (ΣK / 890) x (CV /d
psia
q / FP * √ (P1 -P2) / Gf
124 70
Valve percentage opening
NO CHOCKING PHENOMENON CHECK VALVE SIZE !!!
SELECTED A VALVE OF SIZE 4 inch AND WITH A PERCENTAGE OPENING OF 70 DEGREES.
SF-EG301-001E Calculation Worksheet EXCEL
4 of 10
Jan 2011
Calculation Worksheet Document ID
705 - XXX - XXX
SF-EG301-001G
TORONTO OFFICE
Client Reference #
TITLE: SCREW FEEDER CALCULATIONS (Example) 3-Feb-11 PREPARED BY: ANISH DATE:
REVIEWED BY:
SHEET:
(Print & Sign)
(Print & Sign)
DATE:
PERCENTAGE VALVE OPENING CALCULATOR Take values from manufacturer's catalogue (enter here)
Calculated CV value
124
CV value just preceeding calculated CV value
18.3
% valve opening corrosponding to that value
30
CV value just succeeding calculated CV value
125
% valve opening corrosponding to that value
70
Percentage Valve opening corrosponding to calculated CV SELECTED % OPENING
69.6251 70
CROSS CHECKING VALVE SELECTION USING GAIN ACROSS APPLICABLE FLOW RATES (Enter the calculated % stroke for each case using the calculator sheet ) Flow Type
Flow (gpm)
CV % values Stroke
SF-EG301-001E Calculation Worksheet EXCEL
Change in Flow (gpm)
5 of 10
Change in Stroke %
GAIN
Jan 2011
SF-EG301-001G
TORONTO OFFICE OF
ES FOR SINGLE PHASE FLOW
E SIZE EQUAL TO OR GREATERT THAN LINE SIZE W
SF-EG301-001E Calculation Worksheet EXCEL
6 of 10
Jan 2011
SF-EG301-001G
TORONTO OFFICE OF
SF-EG301-001E Calculation Worksheet EXCEL
7 of 10
Jan 2011
SF-EG301-001G
TORONTO OFFICE OF
SF-EG301-001E Calculation Worksheet EXCEL
8 of 10
Jan 2011
CONTROL VALVE HAND BOOK FOR SIZING
PLEASE CLICK ON THE ICONS ABOVE AND WAIT A LITTLE
FISCHER CATALOGUE
ATALOGUE

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