@ vpl. This pipe is not installed yet. Initial design had a 3" line. The question they are asking is if they switch from a 3" to a 2" fill line what effect will it have on the time required to fill the tank. Thus my question.
The calculator Katmar posted and the Hazen-Williams method posted...
Thanks for your responses. I have spent over an hour with a fellow co-worker and 2 textbooks trying to figure this "simple" problem.
Ione- You are on the right track. I also made some unit mistakes in my initial calculation.
Using the formula
Flow = Area * Cd * Sqrt (2 * g * h) is...
I meant to say velocity is area*Cd*Sqrt(2*g*h).
Velocity was calculated to be 5.6 ft/sec. Once I have the velocity the flow is calculated pretty easily through a 2" pipe.
Thus the answer is 55 GPM.
Okay I found my own answer.
Flow is area*Cd*Sqrt(2gh)
Convert pressure to ft and plug in for 'h' = 50 psi = 115 ft H20
Cd is about 0.98 for a smooth opening
g is 32.2 ft/sec/sec
Comes out to about 55 GPM.
This is not homework and is work related. It is for a fire station where they are filling up the their trucks with this water. I want to know how long it will take to fill up the truck. If I get the flow rate... I can get the fill time.
This may be an elementary question, but I am having the hardest time finding the answer.
I have a 2" pipe that is running water at 50 psi (city pressure) with a valve on the end. Total length from the city main to the valve is about 100 ft. If I open this pipe up, fully open, to fill up a...
