steam pressure drop

Page: 1 of Revision: Date: Prepared by: Checked by: STEAM PRESSURE DROP / LINE SIZING CALCULATION Calculations K values for fittings and Pipe Type L/D Qnty Nominal diameter 3.00 in 16 Valves: Schedule 40 Gate 8 2 Inner diameter 3.068 in Ball 3 Length of pipe 200 ft Plug 18 Absolute roughness 0.00015 Globe (type I) 340 Friction factor (Chen e 0.0180 Globe (type II) 55 Fluid Angle (type I) 150 Molecular weight 18.02 lb/lbmol Angle (type II) 55 Pressure 100 psig Butterfly, 2-8" 45 Temperature 338.2 F Butterfly, 10-14" 35 " 798.2 R Butterfly, 16-24" 25 Viscosity 0.014 cP Lift Check 600 Density 0.26 lb/cf Swing check 100 Mass flowrate 4,500 lb/hr Fittings: Volumetric flowrate 290 cfm 90 elbow, std 30 " 94,645 scfh 90 elbow, LR 20 6 " 1,577 scfm 45 elbow, std 16 Velocity 94.31 fps Close Return Bend 50 " 5658 fpm Tee branch 60 1 Sonic velocity 1692 fps Tee run 20 2 Straight Pipe Misc Reynolds number (Re) 654,837 Special (see below) P drop per 100' pipe 1.75 psi/100ft Pressure Drop Sum of K values: Pipe 3.49 psi Fittings & valves 1.05 psi Misc. elements psi Other psi Total Pressure Drop 4.55 psi Type beta L/D theta (degrees) Contraction Enlargement Reduced Gate Valve Reduced Globe/Angle Valve 340 Reduced Ball Valve Sum of K values: Client: Text Project: Text Item: Text Calculation No. Text K values for special fittings & valves (see Crane 410, p. A-26, for def. of d1, d1 (in) d2 (in) K ' K ''

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stm DPClient: TextPage:1 of 1Project: TextRevision:Item: TextDate:Calculation No. TextPrepared by:Checked by:STEAM PRESSURE DROP / LINE SIZING CALCULATIONCalculationsK values for fittings and valvesPipeTypeL/DQntyKNominal diameter3.00in16Valves:Schedule400Gate820.29Inner diameter3.068inBall30.00Length of pipe200ftPlug180.00Absolute roughness0.00015Globe (type I)3400.00Friction factor (Chen eqn)0.0180Globe (type II)550.00FluidAngle (type I)1500.00Molecular weight18.02lb/lbmolAngle (type II)550.00Pressure100psigButterfly, 2-8"450.00Temperature338.2FButterfly, 10-14"350.00"798.2RButterfly, 16-24"250.00Viscosity0.014cPLift Check6000.00Density0.26lb/cfSwing check1000.00Mass flowrate4,500lb/hrFittings:0.00Volumetric flowrate290cfm90 elbow, std300.00"94,645scfh90 elbow, LR2062.16"1,577scfm45 elbow, std160.00Velocity94.31fpsClose Return Bend500.00"5658fpmTee branch6011.08Sonic velocity1692fpsTee run2020.72Straight PipeMisc0.00Reynolds number (Re)654,837Special (see below)0.00P drop per 100' pipe1.75psi/100ftPressure DropSum of K values:4.25Pipe3.49psiFittings & valves1.05psiMisc. elementspsi0.00OtherpsiTotal Pressure Drop4.55psiK values for special fittings & valves (see Crane 410, p. A-26, for def. of d1, d2, and theta)Typed1 (in)d2 (in)betaL/Dtheta (degrees)K'K''KContraction0.000.000.000.00Enlargement0.000.000.000.00ALWAYS: d1 < d2, K value only good if Diameter = d2Reduced Gate Valve0.000.000.000.00Reduced Globe/Angle Valve0.003400.000.000.00

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