Question

0.75 m' of hydrogen gas is initially at a pressure of 1 bar and temperature
290 K. İt is compressed isentropically to 15 bar. Next it is expanded at constant temperature to
original volume. Finally heat rejection takes place at constant volume and the gas pressure is restored
to the original condition of pressure. Find : 1, Pressure, volume and temperature at the end of each
operation ; 2. Heat added during isothermal expansion ; and 3. Change of internal energy during
each process.
For hydrogen, R = 4126 J/kg K; c= 14.26 kJ/kg K.​

Answer 1

Answer:

it is give that the ratio equal to 4 and ans is 14.36

Answer 2

Answer:

0.75 m' of hydrogen gas is initially at a pressure of 1 bar and temperature

290 K. İt is compressed isentropically to 15 bar. Next it is expanded at constant temperature to

original volume. Finally heat rejection takes place at constant volume and the gas pressure is restored

to the original condition of pressure. Find : 1, Pressure, volume and temperature at the end of each

operation ; 2. Heat added during isothermal expansion ; and 3. Change of internal energy during

each process.

For hydrogen, R = 4126 J/kg K; c= 14.26 kJ/kg K