Need water Flow Calculation for a punctured pipe of perfect 15mm dia.

[praveen2309]

Dear Friends i want to make a calculation for discharge rate of 50mm dia pipe punched perfect of 15mm dia Pipe at the bottom of which is installed horizontally in the roof of a room. where pressure is maintained in constant of 7kg with the help of a makeup pump with pressure drop sensor.

 

[SandCounter]

I suggest an orifice calc + branch flow loss using the smaller of the diameters.

I used to count sand. Now I don't count at all.

 

[bimr]

Use one of the water flow rate through an orifice calculators:

http://www.tlv.com/global/TI/calculator/water-flow-rate-through-orifice.html

 

[jte]

Sounds like a homework problem. What does your professor say about it?

Also... since when was "kg" a unit of pressure?