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

Working of engine lubrication system , Working of Engine Lubrication System...

Working of Engine Lubrication System: The oil flows from oil pump into the distribution chamber, where it is divided into two parts. One part enters into the right crankcase cove

Calculate the natural frequency, (a) A circular cylinder of mass M and radi...

(a) A circular cylinder of mass M and radius R connected by a spring of stiffness ‘K'. It is free to roll on horizontal surface without slipping. Calculate the natural frequency.

Electric resistance welding, ELECTRIC RESISTANCE WELDING Electric resis...

ELECTRIC RESISTANCE WELDING Electric resistance welding is an important and widely applied non fusion welding process. This write up covers the basic principles of various resi

Ratio of belt tension - open belt drive, Ratio of belt tension: For Op...

Ratio of belt tension: For Open belt drive:   Angle of contact (θ) for larger pulley = ∏ + 2α Angle of contact (θ) for smaller pulley = ∏ - 2α For cross belt drive:

Difference between projectile motion and a rocket motion, Difference betwee...

Difference between projectile motion and a rocket motion? Ans) A projectile has no motor or rocket on it, so all of its momentum is given to it as it is opened. An example of a

Computer aided manufacturing, Computer systems to plan manage, and control...

Computer systems to plan manage, and control the operations of a manufacturing plant through either direct or indirect computer interface with the plants production resource

Current-fundamentals of electricity , Fundamentals of Electricity Cu...

Fundamentals of Electricity Current: The flow rate of charge or electrons with respect to time is known as current. It is measured in ampere (A).

Time and cost analysis, Time and Cost Analysis This discusses about ce...

Time and Cost Analysis This discusses about certain basic activities that must be carried out in a factory to convert raw materials into finished products. These activities br

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