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

Determine the maximum stress - thick cylinder, Determine the maximum stress...

Determine the maximum stress - thick cylinder: A thick cylinder of steel with an internal diameter of 100 mm & external diameter of 200 mm is subjected to an internal pressure

What is pedestal and what are uses of pedestal, What is pedestal? What are ...

What is pedestal? What are uses of pedestal? PEDESTALS A pedestal is used to transfer the loads from the metal columns through the floor and soil to the footing when it is a

Compression ignition engines - thermodynamics, Compressio n Ignition Engin...

Compressio n Ignition Engines (or C.I. Engine): It works on the basis of dieses cycle. In diesel engines, energy addition occurs at constant pressure but energy rejection at

Evaluate the stresses in the concrete and steel bars, A load of 1.9 MN is a...

A load of 1.9 MN is applied on a short concrete column 300mm x 300mm. The column is reinforced with four steel bars of 10mm diameter, one in each corner. Evaluate the stresses in t

Explain the height adjustment and extension of augers, Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Find the speed of shaft , Find the speed of shaft : Find the speed of...

Find the speed of shaft : Find the speed of shaft driven with the belt by an engine running at 600 rotation per minute. The thickness of belt is 2cm, diameter of engine pulle

First law for closed system undergoing cycle, First Law for closed system u...

First Law for closed system undergoing cycle: In accordance to first law, when a closed system undergoes thermodynamic cycle, the net heat transfer is equal to network transfe

Hot And Cold Working, What Are Difference Between Hot And Cold Working

What Are Difference Between Hot And Cold Working

What is vibration?, Describe vibration, How to calculate vibration?

Describe vibration, How to calculate vibration?

Uses of carnot cycle - thermodynamics, Use s of Carnot Cycle: 1. It ...

Use s of Carnot Cycle: 1. It helping us to appreciate what factors is desirable in the design of practical cycle; namely a maximum possible temperature range. 1 maximum p

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