Appendix B: Piping Estimating Tool - Viking ESFR Technical Data Manual

Page 108
The Viking Corporation, 210 N Industrial Park Road, Hastings MI 49058
Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-945-4495 Email: techsvcs@vikingcorp.com
APPENDIX B - ESFR PRE-PRIMED SINGLE INTERLOCK
PREACTION COLD STORAGE SYSTEM PIPING ESTIMAT-
ING TOOL
Appendix B provides information on how to set up a Microsoft Excel spreadsheet to compare the fric-
tion loss values when using the Hazen Williams formula and the Darcy-Weisbach formula. This tool
can be helpful in the project estimating phase for large systems that use propylene glycol solution.
This spreadsheet is not intended to be used for hydraulic calculations. It should be used as a refer-
ence only.
A
1 Hazen Willams Darcey Wiesbach
2 PSI Loss Per Foot
3 Total PSI Loss
4
5
6 Hazen Willams Darcey Wiesbach
7 Flow Rate (GPM)
8 C of Pipe
9 internal pipe dia (in.)
10 Length of pipe (ft)
11 friction factor
12
density (lbs/ft^3)
13
14 viscosity (centipose)
15 Relative Pipe Roughness
Step 1: Create the table as shown. Enter
the formulas and constant values
highlighted in gray. Formulas are listed
to the right.
A
1
2 PSI Loss Per Foot
3 Total PSI Loss
4
5
6
7 Flow Rate (GPM)
8 C of Pipe
9 internal pipe dia (in.)
10 Length of pipe (ft)
11 friction factor
12
density (lbs/ft^3)
13
14 viscosity (centipose)
15 Relative Pipe Roughness
Step 2: Input Flow Rate into cells B7 and C7
TECHNICAL DATA
B C
B2 C2
B3 C3
Inputs
None
None
None
None
None
B C
Hazen Willams Darcey Wiesbach
#DIV/0! #DIV/0!
#DIV/0! #DIV/0!
Inputs
Hazen Willams Darcey Wiesbach
803.8 803.8
None
None
None
None
None
D E
Reynolds Number E1
Calculated Friction Factor E2
Typical values are 120
See cell above or may also be found in table
Temperature (F) 60
Density 64.96
Viscosity 8.13
Typical values are .00033
Enter the following formulas in the cells listed:
E1 =47.6*C7*C12/(C9*C14)
B2 =4.52*B7^1.85/(B8^1.85*B9^4.87)
C2 =IF(E1>2000,G1,G2)
E2 =(1/(-1.8*LOG10(6.9/E1+(C15*12/(C9*3.7))^1.11)))^2
B3 =B2*B10
C3 =C2*C10
D
Reynolds Number #DIV/0!
Calculated Friction Factor #DIV/0!
Typical values are 120
See cell above or may also be found in table
Temperature (F) 60
Density 64.96
Viscosity 8.13
Typical values are .00033
March 7, 2008
ESFR PRE-PRIMED SINGLE
INTERLOCK PREACTION
COLD STORAGE SYSTEM
F G H
Turbulent
Laminar
0 -10 -20
65.89 66.2 67.7
61 96 180
E F G
#DIV/0! Turbulent
#DIV/0! Laminar
0 -10 -20
65.89 66.2 67.7
61 96 180
H