2xΔΡ Flow Rate Measurement: Q = CdXA, X Where D1= 34 mm D2= 20 mm Cd =0.97 px H = pg g Impeller Specifications: Diameter

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2xΔΡ Flow Rate Measurement: Q = CdXA, X Where D1= 34 mm D2= 20 mm Cd =0.97 px H = pg g Impeller Specifications: Diameter D2 = 142 mm Exit Width b2= 25 mm Number of Blades Z=7 Blade exit angle B2 = 500 cavitation coefficient=0.25 QX(P4-P2) P4-P2 nhxdXU (1-euxtan 8, ; W = 2xTP mp Hp AXT) (1) Plot Head, Power input, NPSHR and nn efficiency, my with flow rate at pump speed Use model laws to predict flow rate, head, power, NPSH and efficiency at other two speeds and plot (1) Head vs Flow rate at different speeds and show experimental points (2) Power vs flow rate at different speeds and show experimental points (3) Overall efficiency vs flow rate at different speeds and show experimental points (4) Hydraulic efficiency vs flow rate at different speeds
Nrpm 1500 1500 1500 1500 1500 P2 Bar -0.15 -0.12 -0.10 -0.08 -0.07 P4 Bar 0.21 0.32 0.42 0.51 0.60 AP Bar 0.11 0.07 0.04 0.01 0.0 Tp Nm 0.59 0.57 0.55 0.50 0.49