Engineering hydraulics question

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SUMMARY

The discussion centers on calculating the required pressure at Point A in a hydraulic system involving a 6-inch schedule-40 steel pipe transporting water at 800 gpm from Point A to Point B, which is 60 feet higher. The pressure at Point B is specified as 50 psig. Using the simplified Bernoulli equation, participants are tasked with determining the velocity (V) of the water flow, which is essential for solving the pressure requirement at Point A.

PREREQUISITES
  • Understanding of Bernoulli's equation in fluid mechanics
  • Familiarity with pressure units, specifically psig
  • Knowledge of flow rate calculations in gallons per minute (gpm)
  • Basic concepts of hydraulic systems and pipe flow
NEXT STEPS
  • Calculate the velocity of water flow in a 6-inch pipe using the flow rate of 800 gpm
  • Explore the implications of elevation changes on pressure using Bernoulli's principle
  • Investigate the effects of friction loss (hf) in pipe flow
  • Learn about the conversion between pressure units, particularly from psig to absolute pressure
USEFUL FOR

This discussion is beneficial for civil engineers, hydraulic engineers, and students studying fluid mechanics, particularly those working on pressure calculations in piping systems.

mohamadali
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Homework Statement



Points A and B are separated by 3000 ft of new 6-in schedule-40 steel pipe. 800 gpm of 60 deg F of water flow from point A to point B. Point B is 60 ft above point A. What must be the pressure at Point A if the pressure at B must be 50 psig?


Homework Equations



PA/ρg + VA2/2g + ZA = PB/ρg + VB2/2g + ZB + hf
Since, VA = VB and ZA=0, Bernoulli equation can be simplified to:

PA/ρg = PB/ρg + ZB + hf

The Attempt at a Solution



I am stuck at this point if anyone can help I would greatly appreciate it
 
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For Bernoulli you need V, so how would you go about finding V? If you had v you'd be home free, no?

(I assume 6" pipe means 6" diameter. And watch out for p given you as "psig").
 

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