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

Question, The state of stress at a point is given by the stress components ...

The state of stress at a point is given by the stress components sx = 70 MPa, sy = 10 MPa and ?xy = - 40 MPa. Using Mohr''s circle, find (i) Principal stresses, and (ii) Principal

Live project, any type of civil live project at hyderabad

any type of civil live project at hyderabad

Functions of different reinforcement in a typical pile cap, Functions of di...

Functions of different reinforcement in a typical pile cap Loads from columns transferring to pile cap persuade tensile forces at the bottom of cap. For example, by using trus

Explain sedimentation, Explain Sedimentation 1. Sedimentation bas...

Explain Sedimentation 1. Sedimentation basin or clarifier is used to remove particles that will settle in a reasonable time period 2. Basins are usually rectangular or

Pavement layers and their functions, Pavement Layers And Their Functions ...

Pavement Layers And Their Functions Flexible Pavement A typical modern flexible pavement for high traffic is composed of layers as under (Figure). Figure: L

Stress strain curves, stress strain curves for any materials with an explan...

stress strain curves for any materials with an explanation

Sewer manhole, minimun difference in level of inlet and oulet pipe level in...

minimun difference in level of inlet and oulet pipe level invert in manhole

Significance of tailwater level in culverts, Significance of tailwater leve...

Significance of tailwater level in culverts Headwater level and tailwater level of culverts are significant parameters in hydraulic design. Headwater level can't be set too la

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