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

WMM, what is wmm what are all the uses of that wmm

what is wmm what are all the uses of that wmm

What do by diaphragm wall, Q. What do by Diaphragm wall? For the constr...

Q. What do by Diaphragm wall? For the construction of diaphragm walls adjacent to buildings, former experience showed that excess slurry head above groundwater level had to be

Assignment, I need to find support reactions at O for the beam with a distr...

I need to find support reactions at O for the beam with a distributed load, a 6 kN moment couple at A and a 3 kN axial load as shown in picture.

Explain different types of texture and structure of soils, (a) Relate dissi...

(a) Relate dissimilar formations of soils to the geological aspects. (b) Explain different types of texture and structure of soils. (c) Bring out the typical characteristics

Determine the uses of screw connectors, Determine the uses of Screw connect...

Determine the uses of Screw connectors Screw connectors are normally used  to splice large-diameter high-tensile strength bars. The bars are threaded at the ends and a sheet-me

Project, Can I get an online project to work on in civil engineering??

Can I get an online project to work on in civil engineering??

Define radiography - underwater inspection of bridge, Define Radiography - ...

Define Radiography - Underwater Inspection of Bridge? Radiographic non-destructive examination of components is based on the phenomenon that materials absorb radiation energy a

Define bank volume to be stockpiled and used for backfill, An earthwork con...

An earthwork contract was awarded to excavate and backfill the foundation of a proposed 50-ft by 50-ft office building.  The existing grade elevation is 437.5-ft while the sub-base

What is function of mortar in brick walls, Q. What is Function of mortar in...

Q. What is Function of mortar in brick walls? A distinctive brick wall structure generally comprises the subsequent components:  (i)  Coping on top of the brick wall to prot

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