Determine the net work - mechanics, Mechanical Engineering

Assignment Help:

Determine the net work:

Q: 5 m3 of air at 2 bar, 27°C is compressed to 6 bar pressure following PV1.3  =C. It is expanded subsequently adiabatically to 2 bar. Considering two processes is to be reversed, determine the net work. Also plot the processes on T - S diagram.            

Sol: Given that:

Initial volume of air  V1  = 5 m3

Initial pressure of air P1  = 2 bar

Final pressure = 6 bar

Compression: Rev. Polytropic process (PVn  = C) Expansion :Rev. adiabatic process (PV14 = C) Now, work done during the process (1-2)

925_Determine the net work 1.png

1584_Determine the net work2.png

negative  sign shows that work input required for compression is more than work output obtained during expansion.


Related Discussions:- Determine the net work - mechanics

Draw a diagram of a simple carburettor, a) Draw a diagram of a simple carbu...

a) Draw a diagram of a simple carburettor and briefly explain its function. b) What are the basic characteristics of fuels for CI engines.

What is specific gravity?, What is specific gravity? what do you mean by 1p...

What is specific gravity? what do you mean by 1pascal? Concept of pressure difference? Sol) The "specific gravity" of a meterial is the ratio of its density to the density of

Objectives of basic troubleshooting of motorcycle , Objectives After s...

Objectives After studying basics troubleshoot of motorcycle, you should be able to check, perform inspection and identify the reason(s) of various problems reported by

Describe the types of wear, (a) Describe the types of wear and causes of we...

(a) Describe the types of wear and causes of wear. Draw figures whenever necessary. (b) Describe any 4 cutting tool materials in detail. (c) Describe the various reasons for

Example of reduce system to a single force and couple, Example of Reduce sy...

Example of Reduce system to a single force and couple: A system of parallel forces is acting on rigid bar as shown in the figure given below. Reduce this system to  a sing

Cycloid., a circle of 40mm roll on horizontal line.draw the curve traced ou...

a circle of 40mm roll on horizontal line.draw the curve traced out by the point for 1 complete revolution.the point is vertically above centre of circle

Hydraulic ram, definition and picture of hyreaulic ram

definition and picture of hyreaulic ram

Molding sand , which are the different types of molding sands?explain each

which are the different types of molding sands?explain each

Motion/movement, What are the different types of Mechanical Motions/Movemen...

What are the different types of Mechanical Motions/Movements?

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