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Exergy Destruction and Irreversibilities Quiz

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Exergy Destruction and Irreversibilities Quiz

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Questions and Answers

What are some examples of irreversibilities that generate entropy?

Examples include friction, mixing, chemical reactions, heat transfer through a finite temperature difference, unrestrained expansion, nonquasi-equilibrium compression or expansion.

What is the relationship between exergy destruction and entropy generation?

The exergy destroyed is proportional to the entropy generated.

What does exergy destroyed represent in a process?

Exergy destroyed represents the lost work potential and is also called the irreversibility or lost work.

When does exergy destroyed become zero?

<p>Exergy destroyed becomes zero for a reversible process.</p> Signup and view all the answers

To what kind of system and process are Equations 8-32 and 8-33 applicable?

<p>They are applicable to any kind of system undergoing any kind of process since any system and its surroundings can be enclosed by a sufficiently large arbitrary boundary across which there is no heat, work, and mass transfer.</p> Signup and view all the answers