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Pressure loss in a circle shaped pipe

Pressure loss in a circle shaped pipe

Pressure loss in a circle shaped pipe

(OP)
can any one help me?

I have a circle shaped pipe ( originally a spiral), and wanna calculate the pressure loss of this pipe, any idea?

Thanks a lot

RE: Pressure loss in a circle shaped pipe

How are you going to get any flow?

Assuming you figure that out, I would go for an equivalent length principle based on the radius of your circle looking at the many equivalent length formula out there.

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

RE: Pressure loss in a circle shaped pipe

Crane Technical Paper 410 has a method for that. Do you have access to TP410? If not, you can order it on the web.

Good luck,
Latexman

Technically, the glass is always full - 1/2 air and 1/2 water.

RE: Pressure loss in a circle shaped pipe

When you say the pipe is "circular, but originally spiral", does that mean the pipe cross section is now circular, and has a constant area? And does this mean the axis of the pipe section follows a helical path with a constant axial pitch and radius, rather than a planar path with a radius that continually increases like a spiral? If the pipe axis follows a helical path and has a constant cross section, then the link provided by ione gives a good analysis approach for calculating pressure drop.

RE: Pressure loss in a circle shaped pipe

I remember Crane TP 410 referring to only flat coils. Perry's has better discussion on this topic, with calculating Dean's number and adjusting pressure drop for circular flow apart from straight pipe line.

RE: Pressure loss in a circle shaped pipe

masihv,
Are you talking about a "Ring Header" (one complete circle) such as would be used for fuel gas to the burners of a Petro-Chem heater?
The goal here is not to have pressure drop bot equal pressure at all burner laterals.

prognosis: Lead or Lag

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