Pressure drop through a reducing tee

[phllp581]

How would you calculate the pressure drop through a reducing tee (2" run with 1" branch)? I can calculate the pressure drop through a tee using Darcy Weisbach equation with an equivalent length for the tee, but I'm not sure how to treat a reducing tee. I suppose I could just calculate the pressure drop through a tee + the pressure drop through a reducer and model the pipe as such, but there must be a better way.

Thanks

 

[bimr]

It is possible to debate the merits of different methods:

http://www.eng-tips.com/viewthread.cfm?qid=173164

At the end of the day, one is making an estimate of the head loss and the best that you can do is a reasonable estimate.

This site has some smaller radius tees:

https://neutrium.net/fluid_flow/pressure-loss-from-fittings-equivalent-length-method/

http://www.lr.tudelft.nl/en/organis...sign-of-elements/feed-systems/feed-systems-b/

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[EmmanuelTop]

If you can, try to obtain the book "Pipe Flow - A Practical and Comprehensive Guide" by D.Rennels and H.Hudson. Chapter 16 is dedicated to tees and it covers all possible flow combinations for converging and diverging tees. A great resource.

Dejan IVANOVIC
Process Engineer, MSChE