Head Pressure

[tomb7us]

How do you determine the head pressure of a line to overcomb the weight of a full silo? For example say i have a 30,000 gallon silo 210 feet tall and i need to move material into it from the bottom, what head pressure do i need to overcomb the pressure of the fluid?

Isint it just a height x gravity x density?

 

[ash9144]

You got it. Height x gravity x density.
With a silo the hard part would be knowing the bulk density with void spaces not just density of solid by itself.
Of course you could use just the solid density ignoring void space and ensure you have ample pressure.

 

[Compositepro]

It may not be that simple. With particle to particle friction and wall friction The bulk material could just lock-up and not behave like a fluid at all. I just can't imagine pushing material into the bottom of a 210 ft. tall silo. It would need to be designed as a pressure vessel as well.

 

[MJCronin]

tomb...

Silos are usually full of solids....

Tanks contain liquids....

Many tanks are filled from the top and pumps heads are sized based on the shell height of the tank, plus an allowance for line losses.

-MJC

 

[tomb7us]

Ok then its a milk tank 110 feet tall shaped like a silo pumped in from the bottom I got it though thanks!