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

Cross-section of exogenous tree, The cross-section of exogenous tree is as ...

The cross-section of exogenous tree is as shown in given figure.The following components are visible to the naked eye:           Cross-section of exogeneous tree 1. P

Conturing, radial line method practical

radial line method practical

Highway pavement design, Explain the important factors affecting the design...

Explain the important factors affecting the design of pavement?

Illustrate concept of filter design, Q. Illustrate Concept of filter design...

Q. Illustrate Concept of filter design? The material used for filter should satisfy the following normal criteria a. Filter material is more pervious than the base material

California bearing ratio, California Bearing Ratio (CBR): The most wi...

California Bearing Ratio (CBR): The most widely used test for determining the supporting power of a soil for designing the thickness of pavements is the California Bearing Ra

What are the uses of groynes, They stop, or slow down erosion, and stop lon...

They stop, or slow down erosion, and stop long shore drift. This, though, can have bad knock-on effects somewhere near.

Concrete, What is compacting factor

What is compacting factor

Explain the operating point - pumping system, Explain the Operating Point -...

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 op

Return period for design situations, Question While design life will it...

Question While design life will it be same as return period for design situations ? Answer Design life means least duration a structure is accepted to last. Longe

Investigation scour for underwater inspection of bridge, Define Investigati...

Define Investigation Scour for Underwater Inspection of Bridge? Investigation Scour is probably the most critical item to be aware of when performing an underwater inspection o

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