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

Explain about the pot bearing - bridge bearing, Explain about the Pot Beari...

Explain about the Pot Bearing? POT bearing was developed in 1959 as an alternative to heavy steel sliding bearings. It consists of a circular non-reinforced rubber-pad fully en

Highway, what is the difference between bitumin and asphalt

what is the difference between bitumin and asphalt

Determine the Critical Euler Buckling Load, a) Determine the critical Eule...

a) Determine the critical Euler buckling load of a solid aluminium rod of 12 mm diameter if it has a length of 1.0 m between pin-ended supports. (E = 70000 N/mm2)       b) A

Biological wastewater engineering, a. We put a lot of time and effort into ...

a. We put a lot of time and effort into cultivating our activated sludge microbial community. So why do we waste sludge out of it? b. A wastewater discharges to Puget sound, a mari

Calculate benefit cost ratio for government project, Calculate the Benefit-...

Calculate the Benefit-Cost Ratio for Municipal Government Project With interest at 10%, the benefit-cost ratio for this municipal government project is most nearly:   Initia

Define fatigue - materials, Define Fatigue - Materials The normative vi...

Define Fatigue - Materials The normative view of the stress/strain is found in the example of the paper clip wire experiment. Take a paper clip wire and try to break it by pull

IRC Class AA loading in existing industrial areas, For IRC Class AA loading...

For IRC Class AA loading in existing industrial areas, what is load (kN/m) has to applied base don the wheel loads. especially raft foundation & roads are at same level.

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