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An Easier Approach to Introduce Entropy in Undergraduate Thermodynamics Classes

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Haseli, Yousef
Copyright Year	2018
Abstract	The common tutorial method of teaching entropy is far twisted and complicated. The convention is to first present Carnot corollaries followed by a “rational argument” to justify the corollaries. In the next step, the efficiency of Carnot engine is argued to be solely dependent on the thermal reservoirs temperatures. Then, thermodynamic temperature scale is introduced to show QL/QH equals TL/TH followed by the Clausius inequality, and finally introducing entropy S. It is not surprising why entropy has been one of the most difficult concepts to teach or learn. The way it is taught in textbooks is not straight unlike many other properties and concepts that are comparably much less cumbersome to understand. Interesting to note is that the inventor of entropy; Clausius, derived the famous Carnot efficiency by simply using the p-V diagram of a Carnot cycle operating with an ideal gas. The objective of this article is to shed light to the original method of Clausius and to present a simple and easy-to-digest approach, so students can better understand where entropy is originated from. Furthermore, we will show that the proof of Carnot corollaries is not concrete and certain objections can be raised.
File Format	PDF
ISBN	9780791852088
DOI	10.1115/IMECE2018-86510
Volume Number	Volume 6B: Energy
Conference Proceedings	ASME 2018 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2018-11-09
Publisher Place	Pittsburgh, Pennsylvania, USA
Access Restriction	Subscribed
Subject Keyword	Concretes Thermodynamics Temperature Undergraduate students Students Reservoirs Entropy Carnot cycle Engines Teaching
Content Type	Text
Resource Type	Article

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