Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Best efficiency point and operating point for pumps?
In a pumping system, a system curve can be derived based on static head needed to lift up the fluid and variable head because of possible head losses. Pump curves that relate the performance of pumping to head against discharge can be attained from pump suppliers. When system curve is superimposed on the pump curve, intersection point is defined as operating point (or duty point). Operating point may not be essentially the same as best efficiency point. Best efficiency point is a function of the pump itself and it's the point of lowest internal friction inside pump at the time of pumping. These losses are persuaded by adverse pressure, shock losses and friction.
Losses owing to adverse pressure gradient take place in pumps as the pressure of flow increases from inlet to outlet of pumps and flow travels from a region of low to high pressure. It causes the formation of shear layers and flow separation. Flow oscillation can also take place that accounts for noise and vibration of pumps. Effect of adverse pressure gradient is more substantial in low flow condition.
For shock losses, they are persuaded when inflow into pumps isn't radial and comprises swirl. In an ideal situation, flow within the pump must be parallel to impellers such that flow angle is very close to impeller angle. Deviation of the above situation from design causes energy losses and vibration.
Fig: A diagram showing point of best efficiency ≠ operating point
Determine the concept of Shrink-fitting of metal tyres Shrink-fitting of metal tyres on the wheels of bullock carts is well known. As the hot metal tyre rings cool down, they a
Didtribution of shear stree over a triangular section
Q. Kerb overflow weirs – horizontal bars vs. vertical bars? Overflow weirs must be provided for steep roads (longitudinal gradient>5%), flat roads (longitudinal gradient Ess
#question.how.
Q. What is the cost of phoenix activity? Phoenix activity has a range of impacts on the Australian economy. Employees lose entitlements when phoenix activity has occurred and w
Define Remedial measures for Problems in Turbid Water - Refraction? There is little that can be done to overcome the effects of refraction. Image definition and contrast in tur
In i ncremental launching mode of bridge construction, what are ways adopted to increase sufficient resistance of superstructure during launching practice?
applications of vectors
sir i want to know that which pages of IS800:2007 is used for steel design of tension member, compression member, collumn, beam, connections, trusses etc.. please give me the topic
Question Is it true that there is no essential to design nominal reinforcement to piles. Answer In BS8110 and BS5400 Pt.4, they need provision of nominal reinforce
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd