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

What are the functions of brake? , (a) What are the functions of brake? Wh...

(a) What are the functions of brake? What are the types of brakes? (b) How do brakes stop a moving vehicle? (c) What is the difference between brake and clutch? (d) Descri

Electron beam welding process and its applications, ELECTRON BEAM WELDING P...

ELECTRON BEAM WELDING PROCESS AND ITS APPLICATIONS   Electron Beam Welding (EBW) is one of the advanced welding technologies required for the precision welding applications

Thermodynamics, how to prove that heat and work is path function?

how to prove that heat and work is path function?

What are the objectives of bearing capacity, What are the objectives of bea...

What are the objectives of bearing capacity? The objectives of bearing capacity: a. identify the possible modes of failure that a shallow foundation can undergo, b. under

Point and path function - thermodynamics, Point and Path Function - Thermod...

Point and Path Function - Thermodynamics: Poin t Function A point function is single valued function which always possesses a single - value is all states. For instance

Corrosion assessment of flare and vru system, Q. Corrosion Assessment of Fl...

Q. Corrosion Assessment of Flare and VRU System? The worst case scenario shall be considered during material selection of Flare KO Drums. Depending on the fluid composition ent

Graphics exchange specification, Graphics Exchange Specification: Afte...

Graphics Exchange Specification: Afterwards, an open meeting was held at the National Academy of Sciences on October 10, 1979. About 200 people attended to herald the birth of

Relations Among Load, 5. Calculate and draw the Shear force and Bending mom...

5. Calculate and draw the Shear force and Bending moment diagrams for the loaded beam and determine the maximum moment M and its location x from left end

Thermal, how do i solve for thickness of insulation when i only have the r ...

how do i solve for thickness of insulation when i only have the r value

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