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Example Problem The fluid being pumped is oil with a specific gravity of 0.86. Calculate the energy delivered by the pump to the oil per unit weight of oil flowing in the system. Energy losses in the system are caused by check valve and friction losses as the fluid flows through the piping. The magnitude of such losses has been determined to be 1.86 N.m/N. Pump system. The volume flow rate through the pump shown in figure below is 0.014 m³/s. SOLUTION: B. PB=296 kPa %3D Schedule 40 (From Pipe Supplier's Table) Wall aI Flow Area NO ao Thickness DN 50 Schedule 40 (ww) 52.48 (ww) 0.002163 steel pipe 60.3 3.91 88.9 5.49 77.92 0.004768 GENERAL ENERGY EQUATION BETWEEN POINTS A & B: Flow PA/y + Z, + va?/2g +h, - hg - h = Pg/y+ Zg + VB²/2g 1.0 m %3D Therefore, Tụ + 87/(¿YA - "^) + ('z - "z ) + ^/(°d - d) = 'y DN 80 Schedule 40 %3D Check valve From continuity VA =? steel pipe equation, v = Q/A, %3D PA=-28 kPa V8 = ? Pump CHECK ANSWER = 42.9 m, or 42.9 N.m/N

Example Problem The fluid being pumped is oil with a specific gravity of 0.86. Calculate the energy delivered by the pump to the oil per unit weight of oil flowing in the system. Energy losses in the system are caused by check valve and friction losses as the fluid flows through the piping. The magnitude of such losses has been determined to be 1.86 N.m/N. Pump system. The volume flow rate through the pump shown in figure below is 0.014 m³/s. SOLUTION: B. PB=296 kPa %3D Schedule 40 (From Pipe Supplier's Table) Wall aI Flow Area NO ao Thickness DN 50 Schedule 40 (ww) 52.48 (ww) 0.002163 steel pipe 60.3 3.91 88.9 5.49 77.92 0.004768 GENERAL ENERGY EQUATION BETWEEN POINTS A & B: Flow PA/y + Z, + va?/2g +h, - hg - h = Pg/y+ Zg + VB²/2g 1.0 m %3D Therefore, Tụ + 87/(¿YA - "^) + ('z - "z ) + ^/(°d - d) = 'y DN 80 Schedule 40 %3D Check valve From continuity VA =? steel pipe equation, v = Q/A, %3D PA=-28 kPa V8 = ? Pump CHECK ANSWER = 42.9 m, or 42.9 N.m/N

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Example Problem The fluid being pumped is oil with a specific gravity of 0.86. Calculate the energy delivered by the pump to the oil per unit weight of oil flowing in the system. Energy losses in the system are caused by check valve and friction losses as the fluid flows through the piping. The magnitude of such losses has been determined to be 1.86 N.m/N. Pump system. The volume flow rate through the pump shown in figure below is 0.014 m³/s. SOLUTION: +EO PB = 296 kPa Schedule 40 (From Pipe Supplier's Table) Wall Flow Area ao NO ao Thickness DN 50 Schedule 40 (ww) 0.002163 steel pipe 60.3 3.91 52.48 88.9 5.49 77.92 0.004768 08 GENERAL ENERGY EQUATION BETWEEN POINTS A & B: Flow PA/y + Z, + v/2g +h- hg -h = PB/y+ ZB + Vp²/2g 1.0 m %3D Therefore, Ty + 87/(A -A) + ("z - "z ) + ^/(°d - d) = 'y DN 80 Schedule 40 %3D Check valve From continuity equation, v = Q/A, find VA & VB VA = ? steel pipe PA =-28 kPa %3D Vs = ? Pump CHECK ANSWER h =42.9 m, or 42.9 N.m/N %3D 5.
Transcribed Image Text:Example Problem The fluid being pumped is oil with a specific gravity of 0.86. Calculate the energy delivered by the pump to the oil per unit weight of oil flowing in the system. Energy losses in the system are caused by check valve and friction losses as the fluid flows through the piping. The magnitude of such losses has been determined to be 1.86 N.m/N. Pump system. The volume flow rate through the pump shown in figure below is 0.014 m³/s. SOLUTION: +EO PB = 296 kPa Schedule 40 (From Pipe Supplier's Table) Wall Flow Area ao NO ao Thickness DN 50 Schedule 40 (ww) 0.002163 steel pipe 60.3 3.91 52.48 88.9 5.49 77.92 0.004768 08 GENERAL ENERGY EQUATION BETWEEN POINTS A & B: Flow PA/y + Z, + v/2g +h- hg -h = PB/y+ ZB + Vp²/2g 1.0 m %3D Therefore, Ty + 87/(A -A) + ("z - "z ) + ^/(°d - d) = 'y DN 80 Schedule 40 %3D Check valve From continuity equation, v = Q/A, find VA & VB VA = ? steel pipe PA =-28 kPa %3D Vs = ? Pump CHECK ANSWER h =42.9 m, or 42.9 N.m/N %3D 5.
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