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

Arches and lintels, classification of arches based on their shape are?

classification of arches based on their shape are?

Wall method of estimation, 1. Can you enumerate the benefits of individual ...

1. Can you enumerate the benefits of individual wall method of estimation? 2. Estimate the single room of size 3m x 4m x height 3m  using individual wall method? 3. Which met

Concrete, what do you mean by harsh condrete mix or because of what concret...

what do you mean by harsh condrete mix or because of what concrete mix becomes harsh?

Quality of constraction material ., haw to control quality of constraction...

haw to control quality of constraction material and it''s stage of control, control management, quality of performance ,organization for control

Define the equations for a contracted rectangular weir, Define the Equation...

Define the Equations for a Contracted Rectangular Weir If the rectangular weir is a contracted weir and the flow is restricted from passing freely through the weir opening, a r

Cutbacks and emulsions, Cutbacks And Emulsions: Cutbacks A cu...

Cutbacks And Emulsions: Cutbacks A cutback is a bitumen whose viscosity has been reduced by adding a diluent such as naphtha or kerosene. The use of cut-back is not f

Survey 1, describe how you would range a surveying line betwen two point wi...

describe how you would range a surveying line betwen two point wich are not entervisible?

Types of cross-drainge structures, Types of Cross-drainage Structures: ...

Types of Cross-drainage Structures: The following are the types of cross-drainage structures : (a) Culverts, having waterway upto 6 m. (b) Minor Bridges, having waterwa

Harbour, typical layout showing dock,quay.jetties,turning circle,pier

typical layout showing dock,quay.jetties,turning circle,pier

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