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 maximum fibre stress - beam, Determine Maximum fibre stress: ...

Determine Maximum fibre stress: A beam of rectangular section of 80 mm to 120 mm carries a uniformly distributed load of 40 kN/m over a span of 2 m an axial compressive force

Steam, what is dry ness fraction?

what is dry ness fraction?

Necessity of transmission system , Necessity of Transmission System ...

Necessity of Transmission System The main purpose of Transmission system is to provide a means to vary the torque ratio between the engine and the road wheels. It means th

Horizontal vessels and vertical vessels, Q. Horizontal Vessels and Vertical...

Q. Horizontal Vessels and Vertical Vessels? Horizontal Vessels A horizontal vessel, designed to support a full weight load of water, shall be tested while resting on its sup

Formulate the equation of motion, Figure shows a reinforced concrete framed...

Figure shows a reinforced concrete framed building subjected to earthquake ground motion. The floor is rigid with the mass of each floor is shown in the figure. Formulate the equat

Electron beam welding-nuclear applications, NUCLEAR APPLICATIONS OF ELECTRO...

NUCLEAR APPLICATIONS OF ELECTRON BEAM WELDING   Electron beam has been applied to the fabrication of fuel elements for pressurised water reactors and the distinct advantages

First gear position -Shifting of Gears , First Gear Position : When gear M...

First Gear Position : When gear M1 is in mesh with gear C1 then this is first gear drive position. The gear C1 is freely attached to counter shaft, so gear C1 itself cannot rotate

Geometrical modeling of curves, Geometric modeling is an integral part of a...

Geometric modeling is an integral part of any Computer-Aided-Design (CAD) system. A geometric model is defined as the complete representation of graphical and non-graphical informa

Electro slag welding, ELECTRO SLAG WELDING   This process is similar...

ELECTRO SLAG WELDING   This process is similar to the electro gas welding process designed for making butt welding in the vertical position in one single pass and the plate

Find the out value of force - cantilever truss, A cantilever truss is loade...

A cantilever truss is loaded and supported as shown in the figure given below. Find the out value of P , which would produce an axial force of magnitude 3KN in member AC .

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