1.10. Minor Losses Summary

Try these first

1. 1.

   What is the formula to calculate head loss due to sudden enlargement?

   Hint

   Recall the components of the formula.

2. 2.

   What value is generally assumed for K_entrance if not given?

   Hint

   Think about the common configurations of pipe entries.

3. 3.

   What formula is used to calculate head loss in sudden enlargement?

   • h_L = K_E * (V_1^2)/(2g)
   • h_L = K_L * (V_1^2)/(2g)
   • h_L = K_B * (V_1^2)/(2g)

   Hint

   Recall the type of enlargement being discussed.

4. 4.

   True or False: The head loss coefficient K_exit is generally 0.

   • True
   • False

   Hint

   Think about the implications of what happens at a pipe exit.

5. 5.

   A water system has a sudden enlargement from 5 cm to 15 cm, and water flows at 4 m/s in the smaller pipe. Calculate the head loss using appropriate coefficients.

   Hint

   Focus on proper area calculations.

6. 6.

   For a steady pipe system with a gradual expansion leading to reduced head losses, calculate the head loss if the initial velocity is 5 m/s and you have K_E = 0.8.

   Hint

   Pay attention to velocity changes between points!