In Which Process Work Done Is Maximum?

Which work done is more adiabatic or isothermal?

Bottom line: The magnitude of the work for the isothermal process for both expansion and compression is greater than the magnitude of the work for the adiabatic process.

Although the adiabatic compression work is less negative than the isothermal compression work, the amount of work depends only on its magnitude..

Which thermodynamic process has maximum work?

The maximum work is done when the external pressure Pext of the surroundings on the system is equal to P, the pressure of the system. If V is the volume of the system, the work performed as the system moves from state 1 to 2 during an isobaric thermodynamic process, W12, is the maximum work as given by Eq.

Why is reversible work maximum?

Reversible processes produce the maximum amount of work If a process does work on the surroundings, you get more work out of the process if it is done slowly. This is because less heat is lost to the surroundings. So a reversible process (infinitely slow) does the maximum work.

Is work done in an isobaric process?

Since the pressure is constant, the force exerted is constant and the work done is given as PΔV. An isobaric expansion of a gas requires heat transfer to keep the pressure constant. An isochoric process is one in which the volume is held constant, meaning that the work done by the system will be zero.

Is reversible work a state function?

In thermodynamics (and in everywhere) work of conservative forces just depends on initial and final states. hence at least for an isotherm, reversible work only depends on internal energy and entropy, both of which are state functions.

How do you calculate work done in adiabatic process?

The work done by the mixture during the compression is W=∫V2V1pdV. With the adiabatic condition of Equation 3.7. 14, we may write p as K/Vγ, where K=p1Vγ1=p2Vγ2. The work is therefore W=∫V2V1KVγdV=K1−γ(1Vγ−12−1Vγ−11)=11−γ(p2Vγ2Vγ−12−p1Vγ1Vγ−11)=11−γ(p2V2−p1V1)=11−1.40[(1.23×106N/m2)(40×10−6m3)−=−63J.

In which process work is maximum?

adiabatic processAnswer: Work done is maximum in an adiabatic process.

In which case work done is maximum?

The work done in these two processes is the area under the curves. (Remember that PV has units of energy or work). Clearly, more work is done by the reversible expansion. The reversible expansion does the maximum amount of work because the gas is pushing against the maximum possible external pressure.

In which process work done is minimum?

The work done by a system during a reversible process is the maximum work we can get. The work done on a system in a reversible process is the minimum work we need to do to achieve that state change.

When work done is maximum and minimum?

Work done by a force on an object is maximum when the movement of the object is in line and direction of the force and it is minimum when the movement of the object is in the opposite direction to that of the force. If no movement is shown by the object. then work done by the force on that object is zero.

What is irreversible isothermal expansion?

The example of expansion against a constant external pressure is an example of an irreversible pathway. It does not mean that the gas cannot be re-compressed. … And if the temperature is held constant (so that the expansion follows an isothermal pathway) the nRT term can be extracted from the integral.

Is isothermal process reversible?

Just being isothermal does not necessarily make a process reversible. There are plenty of isothermal processes that are not reversible. … The other two legs (4 to 1 and 2 to 3) are adiabatic compression or expansion and the temperature changes but they are reversible processes.