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

Computation of settlement, Q. Computation of Settlement? The settlement...

Q. Computation of Settlement? The settlement  in any soil mass under an applied stress is given by s = s i + s c + s s where, S  =  total settlement, S i =  imm

Foundation, difference between raft and pile foundation question..

difference between raft and pile foundation question..

Three key types of reinforcement used in pre stressing, Question-What are t...

Question-What are three key types of r einforcement used in pre stressing ?   Answer- (i) Spalling reinforcement - Spalling stresses are established behind loaded

Chemical prestressing, Chemical prestressing In prestressed concrete, ...

Chemical prestressing In prestressed concrete, normally tendons are stretched and are retained in a stretched condition by concrete. Consequently, concrete comes under compres

Airpot, how to design a new airport

how to design a new airport

Construction of parabolic shapes, construct parabolic shapes using the enve...

construct parabolic shapes using the envelop method and the offset method with dimensions 80 by 120

Theory of structures, haw do you salve a supple supported beam with a sprin...

haw do you salve a supple supported beam with a spring balance

Pavement design, differences between highway pavement and airfield pavement...

differences between highway pavement and airfield pavement

Light-weight aggregate prestressed concrete, Light-weight Aggregate Prestre...

Light-weight Aggregate Prestressed Concrete The use of  light-weight aggregate concrete for prestressed concrete construction is well established. The main advantage of  light-

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