CIP velocity in tanks

[jeanney]

Hi all, not sure this is the correct forum to ask, thanks in advance if there's an answer for this

i am checking on a beverage plant design where i am to determine the cleaning liquid velocity in the pipelines and tanks are flowing at a minimum of 1.5m/s on its surface. following are the information

rough plant design: chemical tank-->pipe-->pump#1-->pipe-->tank-->pipe-->pump#2-->pipe--> back to chemical tank

pipeline diameter = 76.2mm
pump#1 flowrate given is at 40 tonnes per hour
pump#2 flowrate given is at 30 tonnes per hour

which makes the velocity to be at 2.43 m/s for pump #1 and 2.1 m/s for pump #2
tank has sprayball in it
hope i did not make any mistake yet, now the question

1) can i use the same equation for calculating the flow velocity in a pipe on flow velocity in the tank?
2) if the answer is yes on 1), is it safe to assume that the the whole system has >1.5m/s of chemicals going through its surface?

thanks in advance

 

[bimr]

The velocity in piping is a simple calculation. Q = VA

where
Q = flow in cubic feet per sec;
A = pipe area in square feet; and
V = fluid velocity in feet per second.

The velocity in the tank is much more complicated because the spray ball is increasing the fluid velocity as the fluid is discharging from the spray ball.

Your best reference for the fluid velocity in the tank is from the spray ball manufacturer. That firm probably has some empirical data on the use of the spray balls.

 

[jeanney]

ok will check with the manufacturer