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

Design of prestressed concrete pipes, Design of prestressed concrete pipes ...

Design of prestressed concrete pipes The design of prestressed concrete pipes should cover the following five stages : (a) Circumferential prestressing, winding with or wit

Calculate the elastic stretch of the steel wire rope, A 70-ft long, ¾" diam...

A 70-ft long, ¾" diameter, 6 x 7 FC wire rope is resisting a tension force of 12-kips.  The elastic stretch of the steel wire rope given the following properties is most nearly: E

Explain the hydraulic radius, Explain the Hydraulic Radius (R) A fluid'...

Explain the Hydraulic Radius (R) A fluid's cross-sectional area in flow divided by the wetted perimeter. For a circular channel flowing full and ½ full, R = D/4.

Desirable properties of bitumen, Desirable Properties of Bitumen: For...

Desirable Properties of Bitumen: For performing as a good binder for road works, bitumen should have the following desirable properties: (a) When heated to the mixing temp

Distomat., write a note on distomat

write a note on distomat

Bending stress distribution diagram, i want to know how bending stress dist...

i want to know how bending stress distribution in c section

Determine the hydraulic radius for rectangular open channel, Determine the ...

Determine the hydraulic radius R for a rectangular open channel with dimensions of 6 ft wide and 4 ft high (side walls) flowing at a depth of 3 ft. Solution: R = A/P Cross-s

Material which can endures vibrations and saline conditions, material which...

material which can endures vibrations and saline conditions

ENGlLISH, Ask question #WHAT is presentation skill #

Ask question #WHAT is presentation skill #

Do you mean by accelerated aging, Q. Do you mean by Accelerated Aging? ...

Q. Do you mean by Accelerated Aging? Accelerated ageing tests are conducted at elevated temperature of 100 o C to know the variation in hardness, UTS and elongation at break.

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