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Materials and Chemical Engineering
Entropy: measure of amount of energy unavailable to do work?
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[QUOTE="Rashik, post: 5549820, member: 601536"] Dear All, I am trying to understand the concept of "entropy" in thermal engineering point of view. I have basic idea about "entropy" i.e. the [URL='https://www.physicsforums.com/insights/grandpa-chets-entropy-recipe/']change in entropy[/URL] is used to determine the direction in which a given process will proceed. However following two more definition (of entropy generally available in textbooks) are confusing and not allowing me to really understand it. [LIST=1] [*]“Entropy can also be explained as a measure of the unavailability of heat to perform useful work”. Or “Entropy quantifies the energy of a substance that is no longer available to perform useful work”.[*]“Entropy is sometimes referred to as a measure of the inability to do work for a given heat transferred.” [/LIST] Can anyone explain me above definitions rather entropy concept with simple examples with mathematical explanations… [/QUOTE]
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Engineering
Materials and Chemical Engineering
Entropy: measure of amount of energy unavailable to do work?
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