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

Slump test, why only frustum cone use in slump

why only frustum cone use in slump

Flow, what is maximum flood level

what is maximum flood level

Pelton wheel, what is the use of the pelton wheel

what is the use of the pelton wheel

Define the void ratio and specific gravity of particles, Derive the formula...

Derive the formula among soil moisture content (w), degree of saturation (S), specific gravity (G), and void ratio (e). Saturated clay has a water content of 40% and bulk specif

Stainless steel really stainless in construction purpose, Question Is i...

Question Is it true that stainless steel really stainless in construction purpose ? Answer Stainless steel refers to alloy steels with more than 10.5 percent of chrom

Consultant , how to convert a varying distributed load to a uniformly distr...

how to convert a varying distributed load to a uniformly distributed load

Scheme of some smaller piles with same load capacity, Question Which wi...

Question Which will be a better choice, a large diameter piles or a scheme of some smaller piles with same load capacity ? Answer Choice of a large diameter pile suff

Diffrence between hudsons and van der meer formula, Q. Diffrence between Hu...

Q. Diffrence between Hudsons and Van der Meer formula? Hudson's formula is usually adopted in preliminary design to attain rough initial estimate of rock size. This formula is

What do you mean by M.A.S. accounts, Q. What do you mean by M A S Accounts?...

Q. What do you mean by M A S Accounts? This stands for material at site account. This is a suspense head of account that is maintained to watch actual consumption of materials

Soil classification - road materials, Soil Classification: Based on p...

Soil Classification: Based on particle size, the soils can be classified as under, adopting the IS soil classification system: 0.002   0.075   0.425   2.36     4.75

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