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

Show the functions of diaphragm walls, Q. Show the Functions of diaphragm w...

Q. Show the Functions of diaphragm walls? The functions of diaphragm walls are as follows: (i)  It is designed to maintain soils during the construction of underground

Explain the well drawdown equations - ground water, Explain the Well Drawdo...

Explain the Well Drawdown Equations Watch the units, especially if you use log 10 or ln.    h 1 = aquifer thickness minus the drawdown (ft)  r 1 = distance from well (ft

Pre-stressing work, Under which situation shall engineers use jacking in ag...

Under which situation shall engineers use jacking in agreement end only and from both ends in pre-stressing work?

Water quality analysis, Water quality analysis: This water quality ana...

Water quality analysis: This water quality analysis presents an overview of physical characteristics of water, chemical substances that are normally present in water and vario

Preparation for underwater inspection - tool and equipment, Preparation for...

Preparation for Underwater Inspection - Availability of Tools and Equipment The engineer-in-charge, before taking up the inspection, should list out the complete equipment req

Bearing capacity, which kind of pile can increase the bearing capacity, if ...

which kind of pile can increase the bearing capacity, if the water level high in sang soil surface?

Retaining walls, Retaining Walls: A wall used to retain some material ...

Retaining Walls: A wall used to retain some material on one or both sides of it can be termed as retaining wall. Commonly, it is used to retain soil at two different levels on

Explain the primary treatment for wastewater, Explain the Primary Treatment...

Explain the Primary Treatment for Wastewater Primary Treatment: to remove the pollutants that floats or settles. Typically 60% of suspended solids and 35% of BOD 5 are removed

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