Question

Problem 5. Water is being pumped from the lower reservoir to the upper reservoir shown below in Figure 5. Losses in this system follow the Darcy-Weisbach formula with B = 2 and the resistance coefficients in the two pipes are marked on the figure. The pump characteristic curve is given by the following equation: hp = 100-8260° where the head is in meters and the discharge Q is in m/s. Determine the discharge Q in the piping system using two different methods: (a) Solve the following problem using the Hardy-Cross method and (b) Solve the same problem by matching the available head and the required head to determine the operating point" of the pump (the operating point is a value of discharge ) zA=35 m 20=10 m R, =5000 s/ms R =300 s}

Answer 1

kone: a he=100-8268 Hardy cross method, Ag = {[W); - (Hpo) i) -AH schi Hp = Pump head Wo =RG ci= kg asper continuity ean, ScA - OBC and sg=0 i [s000+30039 - 0100 -826682) - (-35+10) co :, 6126092 = 75 : 19 = 0.11065 misec b) Available Pump need APPIH Bernoulli equation between A and B , ZG + P + hp + V6 = A + ZA VA JELL i 10+ hp = (sooo +300)9 +35_ hp = ($300 )g+25 · 100-82692= 53008 +29 :.61268=75 9=0.11065 mi? Isec hned with CamScanner

Please like