Determine the net work - mechanics, Mechanical Engineering

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.

Posted Date: 10/16/2012 6:51:28 AM | Location : United States







Related Discussions:- Determine the net work - mechanics, Assignment Help, Ask Question on Determine the net work - mechanics, Get Answer, Expert's Help, Determine the net work - mechanics Discussions

Write discussion on Determine the net work - mechanics
Your posts are moderated
Related Questions
Consider a car of mass m1 is towing a trailer of mass m2 through a tow bar of stiffness k. Drag forces proportional to the car velocity (b1 v1) and the trailer velocity (b2 v2) a

Matter, particle and body: Matter is anything which occupies space, possesses mass provides resistance to any stress, example Iron, air, stone, Water. A body of negligible

give me assinment for Bearing material

a) Derive a mathematical expression for stability of an automobile while accelarating in a curved path? b) A motorcycle and its rider together have a mass of 250Kg and their cen

Numerica l Problems Based on Overhanging Beam: Q: Draw Shear force diagram for the simply supported beam loaded as shown in the figure given below. Sol.: Let the


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

Find out the deflection at mid-span - cantilever beam: A double overhanging beam of 12 m length rests on supports symmetrically, 8 m apart. A load of 80 kN acts at one free en

can u please explain me d concept of 2nd law of thermodynamics. I am not so sure about it ??

Give the assumption of pure torsion derivation of shear stress produced in circular shaft subjected to torsion