LIQUID FLOW

Page 1

ORIFICE PLATE SIZING FOR LIQUID FLOW

Tung and Mikasinovic, Chemical Engineering, Dec 12, 1983 p 69K vs beta correlation by JNS

Find orifice size Find pressure dropInput Data

Flow rate USgpm 15 Flow rate USgpm 15Fluid SG 1 Fluid SG 1Pipe ID in 1.5 Pipe ID in 1.5Press. drop psi 32 Orifice dia in 0.375

ResultOrifice dia in 0.374 Press. drop psi 32

Calcs Vel fps 2.716 Vel fps 2.716Density pcf 62.40 Density pcf 62.40Press drop psf 4608 beta 0.250K 645 k 639beta 0.249 Press drop psf 4566

document.xls

Page 2

ORIFICE CALCULATIONS FOR GAS (COMPRESSIBLE) FLOW

Based on Mink, Chem. Eng Aug 25, 1980, p91Daugherty & Franzini, Fluid Mechanics

INPUT DATAProject WWPDate 17-Apr-23Fluid SteamInlet pressure p1 psig 5Inlet density rho pcf 0.05Flow rate m lb/h or cfm 25310.321 lb/h (units)Orifice dia d inch 7Pipe od Do inch 12Pipe wall Dw inch 0Pressure drop DP psi 4sp.ht ratio k 1.25

CALCULATIONSInlet pressure psia 19.7Flow rate lb/sec 7.0306447Pipe ID Di inch 12Critical pressure ratio 0.555Flow critical nobeta d/D 0.5833333Y 0.9268181m lb/sec 7.0306447

Solver parameters

document.xls

Page 3

Use solver to vary Use solver to varyH13 until H21=H27 K16 until K21=K27

Find dia Find pressure drop5 5

0.05 0.0525600 lb/h (units) 25600 lb/h (units)

7.035713 712 12

0 04 4.109893

1.25 1.25

19.7 19.77.111111 7.111111

12 120.555 0.555

no no0.586309 0.5833330.926683 0.924808

7.11111 7.111108

1 10 0

100 100