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

Bridge, Explain economical span if bridges

Explain economical span if bridges

What are aquifers - hydraulics system, What are Aquifers? Water bearing...

What are Aquifers? Water bearing, underground geologic formations. The subsurface formations are composed of soils and rocks with voids saturated with water.

Roof truss, The angle between the members at the joint is 30°. Design the ...

The angle between the members at the joint is 30°. Design the members at the joint. Design also the connection of the members at the joint. The length of the principal rafter betw

Determine the strain compatibility method, Determine the Strain Compatibili...

Determine the Strain Compatibility method For estimating the ultimate strength of prestressed concrete members in flexure, 'Strain Compatibility method' may be used. For calcul

Cross section diagram of urban road, cross section diagram of urban roan in...

cross section diagram of urban roan in embankment,in cut,in eight lane,in conjusted area,divided hihgway

Maintenance of drainage and shoulders, Maintenance of Drainage: Maint...

Maintenance of Drainage: Maintenance of drainage will ensure that the run-off is taken away from the runway efficiently. The side ditches and buried pipes should be cleaned r

RAFTING, WHY RAFTING IS REQUIRED AND WHAT PRECAUTIONS SHOULD BE TAKEN DURIN...

WHY RAFTING IS REQUIRED AND WHAT PRECAUTIONS SHOULD BE TAKEN DURING RAFTING? AND WHAT IS THE ALTERNATE OF RAFTING.?

Calculate the amount of waste, Calculate the Amount of Waste A municipa...

Calculate the Amount of Waste A municipal solid waste department plans to separate a portion of the ferrous metal, newsprint and cardboard from its MSW waste stream. The depart

Determine the safe frictional resistance of the pile, A pile is driven in u...

A pile is driven in uniform clay of large depth. The clay has unconfined compression strength of 90 kN/m 2 . The pile is 30 cm diameter and 6 m long. Verify the safe frictional res

Cleaning and greasing of steel sliding bearings, Cleaning and greasing of s...

Cleaning and greasing of steel sliding bearings : Following equipments are required for greasing of steel sliding bearings: 1. Jacks (50 ton capacity) - 2 nos. 2. Hard wo

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