Calculate the net positive suction head, Mechanical Engineering

Assignment Help:

Calculate the Net Positive Suction Head

A pump station has been designed to lift water out of a 6 metre deep pit (vented to atmosphere) via a centrifugal pump mounted at ground level.

                Liquid conditions                          20°C

                Suction pipe work losses             2.0 metres

                NPSH safety factor                       5.0 kPa

                Vapor pressure @ 20°C               0.25 metres

Part (a)

Calculate the Net Positive Suction Head (NPSH) for the system ?

Part (b)

In summer the liquid temperature rises to 60°C, this changes the water vapor pressure to 2.05 metres. What is the revised NPSH for the higher water temperature

Part (c)

Pressure loss in the suction pipe work is directly proportional to water veloicty in the pipe work squared, which is inversely proportional to suction pipe work diameter squared.


Related Discussions:- Calculate the net positive suction head

Draw body centred cubic structure, Draw BCC structure and determine its num...

Draw BCC structure and determine its number of atoms per unit cell, co-ordination number and highest edgeradius relation. Draw FCC structure and determine its number of atoms pe

Huckel theory - quantum and spectroscopy, (1) Huckel Theory: Using Huckel t...

(1) Huckel Theory: Using Huckel theory, write a program that solves for the molecular orbitals and energy levels in a conjugated or aromatic hydrocarbon (i.e. ethylene, butadiene,

Pressure - thermodynamics, Pressure - Thermodynamics: While working in...

Pressure - Thermodynamics: While working in the system, thermodynamic medium exerts a force on boundaries of vessel in which it is kept. The vessel may be a container, or an e

Balancing, basics of static balancing.

basics of static balancing.

Actual absolute velocity, As shown in the figure, the jet transport B is fl...

As shown in the figure, the jet transport B is flying north with a velocity vB = 600 km/h when a smaller aircraft A passes underneath the transport headed in the 60 degree directio

Som, Simple problem on direct stress and Bending stres

Simple problem on direct stress and Bending stress

Beams, determine the shear force and bending moments of 4KN fprce

determine the shear force and bending moments of 4KN fprce

Schedule selection -schedule evaluation-heuristics, Schedule Evaluation ...

Schedule Evaluation The schedules are evaluated as per to the criterion weighted loss of slack. Now let t 0 si be the slack (time buffer) of job I as per to the initial sched

#strength of materials, Distribution of shearing stresses on l--sections an...

Distribution of shearing stresses on l--sections and miscellaneous sections

Business Management techniques, how do I Create appropriate costing systems...

how do I Create appropriate costing systems and techniques for specific engineering business functions.

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