How entropy generation is a path function?

Answer: > A process is said to be reversible processes if it is externally as well as internally reversible ¡. e , no entropy is generated any where in the system. –>conclusion is that, Entropy is a property but entropy generation is not a property and is a path function.

Does entropy is a path function?

While ENTROPY is not a path function, entropy generation is. Entropy generation is a property of an irreversible thermodynamic process. The amount of entropy generated depends on the path followed by the process and is characterized by an inequality.

Why is entropy independent of path?

The entropy is a state variable, so the entropy change should not dependent on the path between the initial and final state. That’s why we can calculate the entropy change of free expansion with an isothermal process.

Is entropy depend on Path?

Entropy is a property of the state of a system, and the change in entropy in going from an initial to a final state is independent of the path taken.

What is the difference between entropy and entropy generation?

This is known as the increase of entropy principle. The entropy change of a system or its surroundings can be negative; but entropy generation cannot. The entropy generation is a measure of the magnitudes of the irreversibilities present during the process.

Why is entropy generation always positive?

A measure of a system’s degree of disorder is entropy, represented by S. There is no net shift in entropy if a reversible mechanism occurs. Entropy often increases in an irreversible process, so the change in entropy is optimistic.

What is a path function?

Path functions are properties or quantities whose values depend on the transition of a system from the initial state to the final state. The two most common path functions are heat and work.

What is the function of the entropy?

In this theory, entropy is a measure of the uncertainty associated with a random variable. It measures the average information content one is missing when one does not know the value of the random variable. The concept was introduced by Claude E. Shannon in his 1948 paper “A Mathematical Theory of Communication.”

What is the function of entropy?

Why is entropy independent of the path but heat is dependent on the path?

This means for irreversible path actual entropy change is always greater than obtained by considering irreversible heat interaction. Entropy is a state function ,this statement itself means that entropy change for a process is independent of the path taken by process.

What is entropy generation?

The entropy generation is a measure of the magnitudes of the irreversibilities present during the process. Entropy Balance. Entropy is a measure of molecular disorder or randomness of a system, and the second law states that entropy can be created but it cannot be destroyed.

What is meant by entropy generation?

Entropy generation is a measure of dissipated useful energy and degradation of the performance of engineering systems, such as transport and rate processes; and the dissipation depends on the extent of irreversibilities present during a process.

Is entropy generation a point function or a function?

Entropy generation is not property. It’s depends on the path of cycle followed. So entropy is point function. But entropy generation is a path function and always have a positive value.

What is entropy change and how does it work?

What is Entropy Change? Since entropy is a state function, the entropy change of a system depends only on initial and final state irrespective of the path taken. Hence, change in entropy does not differ with the nature of the processes either reversible or irreversible.

What is entropy generation in Mechanical Engineering?

Entropy generation is a measure of dissipated useful energy and degradation of the performance of engineering systems, such as transport and rate processes; and the dissipation depends on the extent of irreversibilities present during a process. Entropy is a nonconserved property; it is conserved during an ideal reversible process only.

Can entropy be negative in general system?

Mechanism of entropy transfer for general system. The value of entropy generation cannot be negative, however the changes in entropy of the system may be positive, negative or zero. The entropy of an isolated system during an irreversible process always increases, which is called the increase of entropy principle.