hf=KAlQ2=1.03x6.84X10-2X1500x0.152=2.38(m) 該管線的沿程水頭損失為2.38m
hf=KAlQ2=1.03x6.84x10-2x1200x0.22=3.38(m) 該管線的水頭損失是3.38m