What are the four 4 thermodynamic processes of an ideal Carnot heat engine cycle What is common to all four thermodynamic processes?

A Carnot cycle is defined as an ideal reversible closed thermodynamic cycle. Four successive operations are involved: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression.

How many types of thermodynamic cycles are there?

Two primary classes of thermodynamic cycles are power cycles and refrigeration cycles. Power cycles are cycles that convert a heat input into a work output, while refrigeration cycles transfer heat from low to high temperatures using work input.

What are the four processes that constitute the Stirling cycle?

The cycle is the same as most other heat cycles in that there are four main processes: compression, heat addition, expansion, and heat removal.

How many thermodynamics rules are there?

The four laws of thermodynamics.

Why is Carnot cycle said to be the most efficient thermodynamic cycle?

The most efficient heat engine cycle is the Carnot cycle, consisting of two isothermal processes and two adiabatic processes. This means that the Carnot cycle is an idealization, since no real engine processes are reversible and all real physical processes involve some increase in entropy.

During which of the four processes is work done by the gas?

In an adiabatic process, change in internal energy of a gas is equal to work done on or by the gas in the process.

What are the four thermodynamic cycles?

Classification of Thermodynamic Cycle

• Reversible Cycle. In a reversible process, there should be no loss of heat due to friction, conduction or radiation, etc.
• Irreversible Cycle.
• Isothermal and Adiabatic.
• Constant Volume, Constant Pressure and Constant pv.
• Throttling.
• Note:
• 1# Carnot Cycle.
• #2 Stirling Cycle.

What is the most efficient thermodynamic cycle and why?

Classical thermodynamics indicates that the most efficient thermodynamic cycle operating between two heat reservoirs is the Carnot engine [1] , and a basic theorem expresses that any reversible cycle working between two constant temperature levels should have the same efficiency as a Carnot cycle [2].

What do you mean by thermodynamic cycle?

Wikipedia Definition A thermodynamic cycle consists of a linked sequence of thermodynamic processes that involve transfer of heat and work into and out of the system, while varying pressure, temperature, and other state variables within the system, and that eventually returns the system to its initial state.

Which of the following is the common processes for the Stirling cycle & Ericsson cycle?

Explanation: The Ericsson cycle consists of two isothermal and two constant pressure processes while the Stirling cycle consists of two isothermal and two constant volume processes.

What is the 4 law of thermodynamics?

4. ‘ Fourth law of thermodynamics’: the dissipative component of evolution is in a direction of steepest entropy ascent.

What are the limitations of first law of thermodynamics?

The limitation of the first law of thermodynamics is that it does not say anything about the direction of flow of heat. It does not say anything whether the process is a spontaneous process or not. The reverse process is not possible. In actual practice, the heat doesn’t convert completely into work.

What is a thermodynamic cycle?

A thermodynamic cycle consists of a series of thermodynamic processes transferring heat and work, while varying pressure, temperature, and other state variables, eventually returning a system to its initial state.[1] In the process of going through this cycle, the system may perform work on its surroundings, thereby acting as a heat engine.

What is anthermodynamic cycle?

thermodynamic cycle consists of a series of thermodynamic processes transferring heat and work, while varyingpressure, temperature, and other state variables, eventually returning a system to its initial state. In the process ofgoing through this cycle, the system may perform work on its surroundings, thereby acting as a heat engine.

What is a power cycle in a heat engine?

Power cycles. Power cycles are cycles which convert some heat input into a mechanical work output. Thermodynamic power cycles are the basis for the operation of heat engines, which run the vast majority of motor vehicles and generate most of the world’s electric power. Heat pump cycles.

How do you prove that a thermodynamic process is reversible?

For example, If during a thermodynamic process from state 1 to 2, the work done by the gas is W1-2, and heat absorbed is H1-2. Now, if by doing work W1-2, on the gas and extracting heat H1-2, we can bring the system back from state 2 to 1, the process is said to be reversible.