Inlet position and other water tank design parameters
Inlet position and other water tank design parameters
(OP)
I'm looking for advice on tank design parameters - basically I've been given a tank and been left with the task of sizing the inlet, outlet, baffle plates, and overflow pipe, and positioning them.
Pipe sizing, baffle plates, the need for a vortex reducer (and its design) - could anyone point me in the right direction standards wise? I've been told 'standards exist' but my search on our Australian standards online library came up short. Any textbook links / papers would be greatly appreciated.
The tank is 4.5m (diam) x 3m, roughly 50kL in size, and the maximum inflow and outflow rates are 30L/second and 20L/second respectively.
Pipe sizing, baffle plates, the need for a vortex reducer (and its design) - could anyone point me in the right direction standards wise? I've been told 'standards exist' but my search on our Australian standards online library came up short. Any textbook links / papers would be greatly appreciated.
The tank is 4.5m (diam) x 3m, roughly 50kL in size, and the maximum inflow and outflow rates are 30L/second and 20L/second respectively.





RE: Inlet position and other water tank design parameters
Companies will have their own specifications for line sizing - on my present project for example, maximum velocity for pump suction (on water) was set at 1.5m/s, and 3.5m/s for pump discharge, with target velocities of 1.2m/s and 2.5m/s.
Also, baffle plate size and configuration was provided by the agitator vendor for all our tanks, including loading data for the tank supplier to design supports.
Overflow pipes are typically a size or two larger than the inflow pipe size, and placed low enough that there is a driving head to handle the maximum flow into the overflow.
Just a couple of thoughts,
Cheers,
John
RE: Inlet position and other water tank design parameters
RE: Inlet position and other water tank design parameters
The tank is not metal, but I'll try to track down a copy of API-650 to see if it's applicable.
I've found some guidelines for vortex plate dimensions and minimum distances to avoid vortex generation in AS 2419.1—2005 (Fire hydrant installations standard). I think abiding by these guidelines will be enough to avoid vortex generation (and comparing with Gould website recommendations), however I'm concerned that the fluid flow into the tank will generate a 'whirlpool'. An engineer was going to provide me with American standards which addressed this phenomenon (and how to deal with it - baffle plates) today but he's now away on leave.
I'll update the thread if I find anything.