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

Michelson interferomete, how it is use to determine the wavelenth of He-Ne ...

how it is use to determine the wavelenth of He-Ne laser?

Calculate the length of developed blank, Calculate the Length of Developed ...

Calculate the Length of Developed Blank Part shown in Figure is to be produced from flat sheet by bending operation. Calculate the length of the developed blank. Assume k = 0.

Resistance spot welding, Resistance Spot Welding In this process, a spo...

Resistance Spot Welding In this process, a spot of weld is made between overlapping sheets by means of two cylindrical copper alloy electrodes, one on top and the other at the

Electrodes- cast iron electrodes, Cast Iron Electrodes There are three ty...

Cast Iron Electrodes There are three types of electrodes for welding of cast ions. a) Monel-cored electrodes (30 % Ni 70 % Cu) b) Fe-Ni (40 % Ni) c) Ni-electrodes (97 E) These

Determine the fluctuation in rail pressure under one wheel, An inside cylin...

An inside cylinder locomotive has its cylinder centre lines 0.70m apart and has a stroke of 0.60m. Rotating mass per cylinder = 150kg Distance between wheel Centre lines = 1.

Example of process capability, Example of Process Capability The speci...

Example of Process Capability The specifications for one characteristic of a part call for its width to be 3.000 + 0.008 centimetres. The procedure has been run under controll

Due diligent, Due Diligent:   There are many literatures on sand blast...

Due Diligent:   There are many literatures on sand blasting and manufacturing processes. Historically, sand blasting had been used for many tasks before. It was pretty famous

Inspection and testing of vessels, Q. Inspection and testing of vessels? ...

Q. Inspection and testing of vessels? The Vendor shall be responsible for all inspection and testing. WorleyParsons reserves the right to inspect vessels or parts of vessels at

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