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A centrifugal pump is used to pump water at 25 ° C from a reservoir open to the atmosphere with the free water surface located 2m above the center of the pump inlet. 3.5m long piping system from the tank to the pump; It consists of a galvanized iron pipe with an internal diameter of 20 cm and an average internal roughness height of 0.15 mm. Local missing elements on top of the piping system are as follows; Sharp edged inlet (Kk = 0.85), flanged smooth 3 man 90 ° elbow (Kk = 0.3 each) and one flanged full open globe valve Kg = 8). Since the maximum volumetric flow that can be pumped without cavitation is 30 L/ s, find the net positive charge on the usable suction. (Evaporation pressure for water at 25 ° temperature: 3.169 kPa) (Atmospheric pressure: 101.3 kPa) ((P=997 kg/m³)) (a = 1.05) (Dynamic viscosity of water at 25 ° temperature: 8,91.10-kg/ms)

A centrifugal pump is used to pump water at 25 ° C from a reservoir open to the atmosphere with the free water surface located 2m above the center of the pump inlet. 3.5m long piping system from the tank to the pump; It consists of a galvanized iron pipe with an internal diameter of 20 cm and an average internal roughness height of 0.15 mm. Local missing elements on top of the piping system are as follows; Sharp edged inlet (Kk = 0.85), flanged smooth 3 man 90 ° elbow (Kk = 0.3 each) and one flanged full open globe valve Kg = 8). Since the maximum volumetric flow that can be pumped without cavitation is 30 L/ s, find the net positive charge on the usable suction. (Evaporation pressure for water at 25 ° temperature: 3.169 kPa) (Atmospheric pressure: 101.3 kPa) ((P=997 kg/m³)) (a = 1.05) (Dynamic viscosity of water at 25 ° temperature: 8,91.10-kg/ms)

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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Kk = Kg A centrifugal pump is used to pump water at 25 ° C from a reservoir open to the atmosphere with the free water surface located 2m above the center of the pump inlet. 3.5m long piping system from the tank to the pump; It consists of a galvanized iron pipe with an internal diameter of 20 cm and an average internal roughness height of 0.15 mm. Local missing elements on top of the piping system are as follows; Sharp edged inlet (Kk = 0.85), flanged smooth 3 man 90 ° elbow (Kk = 0.3 each) and one flanged full open globe valve Kx = 8). Since the maximum volumetric flow that can be pumped without cavitation is 30L/s, find the net positive charge on the usable suction. (Evaporation pressure for water at 25 ° temperature: 3.169 kPa) (Atmospheric pressure: 101.3 kPa) ( (Psu=997 kg/m³)) (a = 1.05) (Dynamic viscosity of water at 25 ° temperature: 8,91.104kg/ms) Depo 11,6 m 8,5 m 7,2 m Formüller; L V2 hy strekli= f•52g 14,8 m P2 + zz + hpompa.f = pg p.V.D + az 2g + zz + hearbing + hx,toptam Re = 2g pg 13.5 m EID 6.9 -1.8 log Re hx.yerel = K- 3.7 hx.toplam= hg_sarekli + hx yerel Wmit = Протра ENPY = (- (orzV2 - wr, V12) v= 2mr,b,V.n = 2arzb,Vzn H = 2/LẠM Nsp = %3D Pg (gH)3/4 pompa girişi WmilB WmilA We (DB %3D Pa (W %3D WA DA PA WA O O O O
Transcribed Image Text:Kk = Kg A centrifugal pump is used to pump water at 25 ° C from a reservoir open to the atmosphere with the free water surface located 2m above the center of the pump inlet. 3.5m long piping system from the tank to the pump; It consists of a galvanized iron pipe with an internal diameter of 20 cm and an average internal roughness height of 0.15 mm. Local missing elements on top of the piping system are as follows; Sharp edged inlet (Kk = 0.85), flanged smooth 3 man 90 ° elbow (Kk = 0.3 each) and one flanged full open globe valve Kx = 8). Since the maximum volumetric flow that can be pumped without cavitation is 30L/s, find the net positive charge on the usable suction. (Evaporation pressure for water at 25 ° temperature: 3.169 kPa) (Atmospheric pressure: 101.3 kPa) ( (Psu=997 kg/m³)) (a = 1.05) (Dynamic viscosity of water at 25 ° temperature: 8,91.104kg/ms) Depo 11,6 m 8,5 m 7,2 m Formüller; L V2 hy strekli= f•52g 14,8 m P2 + zz + hpompa.f = pg p.V.D + az 2g + zz + hearbing + hx,toptam Re = 2g pg 13.5 m EID 6.9 -1.8 log Re hx.yerel = K- 3.7 hx.toplam= hg_sarekli + hx yerel Wmit = Протра ENPY = (- (orzV2 - wr, V12) v= 2mr,b,V.n = 2arzb,Vzn H = 2/LẠM Nsp = %3D Pg (gH)3/4 pompa girişi WmilB WmilA We (DB %3D Pa (W %3D WA DA PA WA O O O O
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