Calculate the net positive suction head, Mechanical Engineering

Assignment Help:

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

                   Liquid conditions                                     20 OC

                   Suction pipe work losses                        2.0 metres

                   NPSH safety factor                                5.0 kPa

                   Vapor pressure @ 20oC                         0.25 metres

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

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

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. For the NPSHavailable result from part (b) what increase in suction pipework size is required to have a positive NPSH available result as calculated in part (a).


Related Discussions:- Calculate the net positive suction head

Determine maximum internal diameter of hollow shaft, Determine maximum inte...

Determine maximum internal diameter of hollow shaft: A solid shaft of mild steel which is 200 mm in diameter is to be replaced by hollow shaft of alloy steel for which the al

Velocity and shear stress distribution, Draw a graph of velocity and shear ...

Draw a graph of velocity and shear stress distribution profile for viscous flow between two parallel plates.

Fixed support, Fixed Support: At such support beam end is not free to tran...

Fixed Support: At such support beam end is not free to translate or rotate at the fixed end there are three reaction horizontal reaction ( R H ), a vertical reaction ( R V ), an

Key words related to air transportation, Keywords related to Air transporta...

Keywords related to Air transportation: Airfield/Airport       :            The area which contains the facilities needed for the operation of aircraft. Apron

Composites , For an automotive component of your choice that is traditional...

For an automotive component of your choice that is traditionally metallic, review how it could be re-engineered as a composite? How factors such as fibre & matrix type, fibre volum

Problem definition of advance manufacturing, PROBLEM DEFINITION Inspi...

PROBLEM DEFINITION Inspiration for a product is most often the result of meeting a particular need or problem that existing products are not able to satisfy. When defining a

Illustrate working of double acting steam engine, Illustrate working of dou...

Illustrate working of double acting steam engine. What is its diagram factor and thermal efficiency?

Two Stage Reciprocating Air Compressors, How does the Two Stage Reciprocati...

How does the Two Stage Reciprocating Air Compressor works?

Various components of transmission system , Various Components of Transmiss...

Various Components of Transmission System Primary Drive Gear : It is mounted on crankshaft. It transfers power to primary driven gear. Primary Driven Gear : It is

Efficiency test on sand blasting, Efficiency Test on Sand Blasting:   ...

Efficiency Test on Sand Blasting:             After the study on sand blasting, the result was acceptable and the next step is planning to make order for new machine and searc

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