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

Potential advantages of segmental tunnelling, Q. Potential advantages of se...

Q. Potential advantages of segmental tunnelling when compared with hand-shield pipe-jacking? In segmental tunnelling, jacks are installed at the shield so that itisn't necessar

What are the limits of any soil classification system, Draw neatly the IS p...

Draw neatly the IS plasticity chart and label the symbol of several soils. What are the limits of any soil classification system? Explain the following tests with their meani

Define the cost of shock transmission unit, Define the Cost of shock transm...

Define the Cost of shock transmission unit? There is a keen competition among the few STU manufacturers. For the second Bassein Creek Bridge, the average cost of two STUs of ca

Use plain dumb-bell type and center-bulb sort, Question While selection...

Question While selection of waterstop, shall engineers use plain dumb-bell type , center-bulb sort ? Answer Plain dumb-bell kind is used for joint site where sm

Properties of matter, Properties of Matter: Due to surface tension,...

Properties of Matter: Due to surface tension, the free surface of a liquid behaves like a stretched elastic membrane tending to contract so as to have minimum surface area.

Show the direction of gunning in shotcreting, Q. Show the Direction of gunn...

Q. Show the Direction of gunning in shotcreting? At the time of the construction of shotcrete, it is intended at gunning the full thickness in one single operation and this hel

How do you maintain water pressure, If you have water pressure and wish to ...

If you have water pressure and wish to handle it, do not cause flow in the line, which will decrease pressure because of friction. To keep pressure up, decrease friction by increas

Pre-stress girder/ I Beam design and Triaxial lab report, I need urgent su...

I need urgent support in my assignment and also my UU triaxial lab report. thanks Maryam

Define channel jig, Define Channel Jig a) A channel jig is the simplest...

Define Channel Jig a) A channel jig is the simplest form of box jig. b) The work is placed in a channel shaped trough and clamped by mean of screw. c) It is utilized

Concrete surface finish - limitations of ultrasonic system, Define Concrete...

Define Concrete Surface Finish - Limitations of Ultrasonic System? The smoothness of the surface under test is important to ensure proper acoustical contact between the transdu

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