Chapter 8, Problem 8.16P

A fluid at 0.8 bar occupying 0.06 m is compressed reversibly to a pressure of 113 bar and specific volume of 0.3 m/kg according to the low p/ c The fluid then expands reversibly according to the law pv to 14 bar Arevertable coolmg at constant volume then restores the fluid back to Initial state. Calculate the work for the expansion in the process in Joules

An internally reversible process occurs in a system during which Q = – 12 KJ, AU = – 79 KJ and Ah = - 111 KJ A. Find the work if the system is non- flow. B. Determine the work and the change of flow energy if the system is steady state, steady flow system with AEK 4 KJ. %3D

9. An air compressor takes in air at 105 Pa and 27°C having volume of 1.5 m3/kg and compresses it to 4.5×105 Pa. Find the work done, heat transfer and change in internal energy if the compression is isothermal.

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1.A rotary compressor receives 6m3/min of gas (R=410 J/kg-K, k=1.67) at 105 kPaa, 26.85°C and delivers it at 630 kPaa; changes of potential and kinetic energies are negligible. Find the work in kJ/min if the process is a) isentropic, b) isothermal c)polytropic with n=1.4

1. A vertical cylinder fitted with a piston contains 5 (kg) of R134a at 12°C. Heat is transferred at constant pressure causing the piston to rise until it hits a set of stops at which point the volume is doubled. Additional heat is added at constant volume to raise the temperature to 70°C and pressure to 1.4 MPa. Sketch the process on Pv and Tv diagrams. Find the heat transfer and work done for both processes. Ignore kinetic and potential effects.

Air in a piston cylinder arrangmemt undergoes a process Pv^1.3 =C. During this process 10 kJ of heat is added to the gas. The work done and the specific heat for the process will be?

I can't Figure out this? 1.83 Wrong.

Air at 1000 Co, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250   kPa. Find         1- the final temperature         2- the specific work output