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

Water absorption test for precast concrete pipes, Question What is the ...

Question What is the major purpose of carrying out water absorption test for precast concrete pipes? Answer Cement will mix with additional water than is compulsory t

What do you mean by no fines concrete, Q. What do you mean by No fines conc...

Q. What do you mean by No fines concrete? Sometimes no fines concrete is used in houses due to its good thermal insulation properties. Essentially no fines concrete comprises c

Solid mensuration, If the diameter of the base remains constant, by what fa...

If the diameter of the base remains constant, by what factor should the altitude be multiplied to produce a cone with twice volume as the original

Contour interpolation, given A,B,C,and D are four plotted points at 2 centi...

given A,B,C,and D are four plotted points at 2 centimeter apart and their ground reduced levels are 57.5 meter 63.2 meter 68.2 meter and 59.2 respectively.it is required to draw co

Basic keywords related to road materials, Basic Keywords related to road ma...

Basic Keywords related to road materials: Sub-grade     :            The portion of road embankment immediately below the pavement. Soil Classifications :            A sy

Chemistry, What are plastics ?give their importance

What are plastics ?give their importance

Deflections of bars, how do one uses the Macauleys model to find deflection...

how do one uses the Macauleys model to find deflections of bars

Wedge frictions, determine the force p if the block is move yto the right a...

determine the force p if the block is move yto the right at an angle of friction on all contact points @20 degrees

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