CALCULATE FRICTIONAL HEAD LOSS

[TECHDOC]

Hi,
Help to calculate the frictional loss for the below said pipeline system
Flow----680 m3/hr
Pipe----SEAMLESS BE STD SCH B-36.10 ASTM A 106 GR.B
14" pipe---40.6 mtrs
12"-----1.8 mtrs
1.1/2"---- 0.2mtrs
Fittings-----gate valve 14" 150# RF- 01 no.,,,, valve-PERM str bw 150# t-type eil std type 14" - 01 nos.
Elbow 90 deg r=1.5d, B16.9 std sch astm a234 14"---9 nos
Elbow 90 deg r=1.5d, B16.9 std sch astm a234 12"------01 nos
Conc.Reducer 14" X 12"----01nos
H.CPLG SW 3000# 8-16.11 astm a105 14" X 1.1/2----01 nos.
Ecc.Reducer 16" x 14"------01 nos


Pls help in calculation of this system ASAP.

 

[BigInch]

Fortunately you forgot to tell us what is flowing in this system.

It is against the web site's policy to do work that you should be doing yourself.

If you have some specific question about the procedure, rather than what is the answer to (*&)**&% , ask it now.

"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek

 

[TECHDOC]

BIG Inch-----------
I got an answer I just wanted to cross check it.
secondly i am more confused with schedule of the pipe....due to which my calculations will get wrong because it is highly viscous fluid....
Thirdly during calculation of NPSHA do we add the atm pressure to the tank pressure or not???


Pls reply its urgent

 

[Latexman]

Attach your work with answer. Maybe, someone will peer review it for you.

Good luck,
Latexman

 

[BigInch]

Right. I have an answer that I want to check too.

Add atmospheric pressure. With NPSH, always work with absolute pressures.

"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek

 

[Latexman]

I would like to see if they really crammed 3000 gpm into an 1.5" pipe.

Good luck,
Latexman

 

[SNORGY]

Latexman,

I suspect it is a branch connection that has no bearing on the system or the problem, based on review of the BOM presented by the O.P..

Otherwise, 172 m/s...won't happen.

 

[Latexman]

SNORGY,

That's what I was hoping too, but why list it? There is a pattern here of listing information that is not important to the problem, and omitting information that is critical to the problem. One would think if the answer had been obtained by working it out, then it should be a simple task to list just the pertinent information needed for a "cross check". The easist way to get at these issues is to see the work, if it exists. If it does exist, I'll gladly peer review it.

Good luck,
Latexman

 

[BigInch]

"ASAP" = = it does not yet exist!

"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek

 

[Latexman]

It seems TECHDOC's posts request an urgent reply quite frequently. Maybe, this one is due tomorrow?

Good luck,
Latexman

 

[stanier]

Biginch,

With NPSH calculations shouldnt you use head not pressure?

“The beautiful thing about learning is that no one can take it away from you.”
---B.B. King

http://waterhammer.hopout.com.au/

 

[BigInch]

Yes "absolutely", however sometimes heads must be converted to pressure for comparison purposes, since you rarely see vapor pressures in terms of head. Vapor pressures may be relevant to the product, but not to the pump.

"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek