Casting of ball Chinese ink runs the loss that causes as a result of pipe fitting and valve
Often be ignored among the conduit that because bend a lesser head that wait for similar pipe fitting and causes,the loss grows in. Between path of manager is defeated by water, if the amount of pipe fitting is opposite less, so, the loss that causes by pipe fitting can be calculated by the method of straight conduit, use Ha Sen - Williams mother this (Hazen-Williams) formulary computation, coefficient is worth CH=130; Use the Brook that take an examination of Er - White (Colebriik-White) formulary computation, coefficient is worth K=0.1. However, in length among the conduit with shorter, higher velocity of flow, the head loss that carries pipe fitting may be very big, should give consideration. The head loss that carries pipe fitting can use following formula to calculate:
(1) as a result of the head loss that drink water and causes
Canal of nodular cast iron
In type, h1: Because flow into the head loss that water causes (M)
F1: Because flow into the loss efficiency that water causes
V: The velocity of flow after water is entered (M/sec)
G: Gravitational acceleration (M/sec2)
Canal of nodular cast iron
