Is Carnot cycle the only reversible?

This is what a Pressure-Volume plot of Carnot cycle looks like. Let us study the cycle starting from point ‘1’. Point 1 to 2: Heat is added as the volume expands. This process is a constant temperature process (isothermal).

Is a Carnot engine a reversible engine?

For the Carnot engine, the entire process is ‘reversible’, and Equation (7) is an equality.

What is a reversible cycle?

In a reversible cycle, a cyclical reversible process, the system and its surroundings will be returned to their original states if one half cycle is followed by the other half cycle.

What is the reason behind that the ideal regenerative cycle is practically not possible?

The ideal regenerative cycle is not practically possible because a heat exchanger cannot be installed inside the turbine as there are more chances for the erosion of the turbine blade (last stage). The thermal efficiency of the ideal regenerative cycle is equal to that of the Carnot cycle.

What are the four reversible stages in a Carnot cycle?

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.

What is meant by reversible and irreversible process?

Summary. A reversible process is one in which both the system and its environment can return to exactly the states they were in by following the reverse path. An irreversible process is one in which the system and its environment cannot return together to exactly the states that they were in.

Why both reheating and regeneration is used together *?

Explanation: When vaporization pressure is high, the reheating of steam is adopted. 2. Why both reheating and regeneration is used together? Explanation: Thus a modern steam power plant has both reheating and regeneration.

What is ideal regenerative cycle?

In an ideal regenerative Rankine cycle, steam enters the turbine at the boiler pressure and expands isentropically to an intermediate pressure. Some steam is extracted at this state and routed to the feedwater heater, while the remaining steam continues to expand isentropically to the condenser pressure.

Why Carnot cycle is a theoretical cycle explain?

The Carnot cycle is a theoretical cycle that is the most efficient cyclical process possible. Any engine using the Carnot cycle, which uses only reversible processes (adiabatic and isothermal), is known as a Carnot engine. Any engine that uses the Carnot cycle enjoys the maximum theoretical efficiency.

What is the maximum efficiency of a Carnot engine?

The maximum efficiency of the carnot engine only depends on two factors: Since it is engine based on ideal cycle that is carnot cycle , which is considered as the ideal cycle to which other cycle are compared, hence its theoritical efficiency is 100 percent.

What is a Carnot cycle?

Carnot cycle is made up of four thermodynamic processes, out of which two are isothermal and two are isentropic. It operates between two temperature limits T(h) and T(c), which are measured on an absolute temperature scale. The efficiency is called Carnot efficiency or ideal efficiency.

How to calculate Carnot efficiency?

How to calculate Carnot Efficiency? First, determine the hot temperature. Determine the temperature of the hotter material or area. Next, determine the lower temperature. Measure the temperature of the cooler material or area. Finally, calculate the Carnot efficiency. Using the formula above, calculate the Carnot Efficiency.

What is Carnot cycle in thermodynamics?

Carnot cycle. The Carnot cycle is a theoretical thermodynamic cycle proposed by French physicist Sadi Carnot in 1824 and expanded upon by others in the 1830s and 1840s. It provides an upper limit on the efficiency that any classical thermodynamic engine can achieve during the conversion of heat into work, or conversely,…