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(Solved): Volumetric Flow Rate, Q=25(m^(3))/(m)in; Working Fluid: Water at STP Impeller #I: \omega _(I)=3,00 ...



Volumetric Flow Rate,

Q=25(m^(3))/(m)in

; Working Fluid: Water at STP Impeller #I:

\omega _(I)=3,000rpm;,

Impeller #II:

\omega _(II)=-3,000rpm

Degree of Reaction: Impeller # I -

R=0.50

; Impeller # II:

R=

unknown Blade Tip Radius:

95mm;

Blade Hub Radius:

37.5mm

Assume flow is axial at BOTH Section 1 and at Section 4. Assume blade angles equal corresponding flow angles. Perform your calculations at the mean radius as defined in Peng (Pg. 45). SECTION # 2 At Section #2, determine: Absolute Velocity,

V_(2)

, and Relative Velocity,

W_(2)

. Draw the Vector diagram of velocity vectors at Section #2, to scale. Determine the blade angle,

\beta _(b2)

on impeller #I. Determine the Power,

P_(s1)

, required for impeller #I. Determine the total Pressure rise from Sections 1 to 2. Sketch to scale (using drawing instruments) the blade on impeller # I.



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