Explain the operating point - pumping system, Civil Engineering

Assignment Help:

Explain the Operating Point - Pumping System

Intersection of the characteristic curve and the system curve. This is the head and flow rate data for the pump "operation". The operating point data (h and Q) are used for the Affinity Laws. For example, if one operating point (h1 and Q1) are know, these values may be used to determine operating points along the same system curve but for a smaller or larger impeller diameter or rpm. 

2309_Operating Point.png

The relationship between h and Q2 is a constant (h/Q2) for all plot points along the system curve. The hf equations include v2 and v1.85, which are related to Q2 by the continuity equation. Also, based on the Affinity Laws, 

h2/h1 = (n2/n1)2 = (Q2/Q1)2   OR,   hf1/ hf2 = (Q1/ Q2)2  

Using the constant (h/Q2) for a system curve, operating point values of h or Q can be used to determine the h or Q values at a different operating point on a different characteristic curve (due to changes in rpm or impeller dia.).


Related Discussions:- Explain the operating point - pumping system

Longitudinal steel – an enhancement of shear strength, Q. Longitudinal stee...

Q. Longitudinal steel – an enhancement of shear strength ? Furthermore to shear resistance provided by shear reinforcement, shear forces in a concrete section is also resisted

Define the cracking - underwater inspection of bridge, Define the Cracking ...

Define the Cracking - underwater inspection of bridge? A crack is a linear fracture in concrete. There can be several types of cracks starting from surface and going into the c

Explain basic need of design of shock transmission unit, Explain the Basic ...

Explain the Basic requirement of Design of shock transmission unit? The STU must withstand the specified design load. The stroke of the piston must be bigger than the movement

Grouting in segmental linings in tunnels, Q. Grouting in segmental linings ...

Q. Grouting in segmental linings in tunnels? Grouting is typically carried out under pressure in segmental linings at the time of tunnel construction due to the below reasons:

Design the curtain to touch the seabed, Question For fixing of silt cur...

Question For fixing of silt curtains, what is the reason that it does not desirable to design the curtain to touch the seabed ? Answer Silt finished are resistant ve

Rectangular panel inside a false work, Question In erection of false work, ...

Question In erection of false work, for a rectangular panel inside a false work would it be braced all along two diagonals ? Answer While a rectangular panel is focus to the

Verify the net allowable bearing pressure, A 1.8 m square column is founded...

A 1.8 m square column is founded at a depth of 1.8 m in sand, for which the accurate N-value is 24. The water table is at a detph of 2.7 m. Verify the net allowable bearing pres

Explain the term - loss of prestress, Explain the term - Loss of Prestress ...

Explain the term - Loss of Prestress At the transfer stage, tendons produce compressive stresses in concrete. Sooner or later, the magnitude of  these stresses experiences a re

#title.METALS., WHAT IS THE DIFFERENCE BETWEEN FERROUS AND NON FERROUS META...

WHAT IS THE DIFFERENCE BETWEEN FERROUS AND NON FERROUS METALS

What do you know about shallow piers, Q. What do you know about Shallow Pie...

Q. What do you know about Shallow Piers? In case of some of the existing bridges, piers may be shallow and grip may be found to be inadequate. Protection round piers is then re

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd