![]() (3) The heat transfer of the irreversible process cannot be simply calculated without additional information, and it cannot be shown in the T-S diagram.Įntropy generation is another important concept in the second law of thermodynamics. ![]() Any chemical or physical change in a system may be accompanied by either an increase in entropy (S > 0) or a decrease in entropy (S. Changes in entropy (S), together with changes in enthalpy (H), enable us to predict in which direction a chemical or physical change will occur spontaneously. With a transfer of energy from another system, we could force all of the atoms into one corner and have a local decrease in entropy, but at the cost of an overall increase in entropy of the universe. Entropy and the Second Law of Thermodynamics. Figure 6.5.e2 T-S diagram: the shaded area represents the heat transfer of a reversible process. The disordered condition is one of high entropy, and the ordered one has low entropy. What is Entropy Entropy is a scientific concept, as well as a measurable physical property that is most commonly associated with a state of disorder. This integral can be shown graphically as the shaded area under the T-S curve of the reversible process, see Figure 6.5.e2. ![]()
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