CIV E 444 - APPLIED HYDRAULICS
SPRING 2016
HOMEWORK No. 12

  1. An axial pump with characteristics shown in the figure below has a diameter of 30 cm and is operated at a speed of 1200 rpm. What is the head when the discharge is 0.25 m3/s? What power in kilowatts is required for these conditions?

  2. A radial pump has the characteristics shown below. At what speed should the pump be operated at maximum efficiency under a head of 80 m? What would be the discharge for this head? What power would be required?

  3. The performance curve of a certain pump is given by:   H = 55 - 500 Q 2, with H in m and Q in m3/s. Given the system shown below, what is the discharge and corresponding head at the system operating point? Assume sharp entrance and exit losses.