Pressure drop across Filter element 1

[dbecker]

Imagine a bronze sintered filter disc. The disc geometry is defined and the particle removal size is defined.

The manufacturer of these discs can give me pressure drop verses CFM/in2 that is, if i know the area of the disc and the CFM gas flow I can calculate pressure drop with this 'factor'.

The problem is instead of using this factor I would like to somehow derive a K value for this disc. Is there any analytical way to derive K value losses for a sintered disc? I have Perry's chemical engineers handbook and Crane's handbook. I think Perry's might have what I want but I can't find what I am looking for there.

Thanks!!

 

[BigInch]

Looks to me like you already have more information than what you need and you just have to turn it around.

You have information that gives pressure drop related to two things flow and area, right?

Assume some disc area. 10 in2 and now that you know the area, then you can derive K for that disc_10. Assume some flow, calculate the pressure drop.

Now just divide the flow by the square root of the (pressure drop * Specific gravity of the fluid)

K = flow / (dP * SG)^0.5

Do it again using a different flow and see if the device has a constant K factor or if K varies with flow.

Now calculate it for a disc with 20 in2 area.

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[dbecker]

Thanks big inch!!!