A revisit on dissipation and its relation to irreversible processes

Nguyen Quang Long , Nguyen Chi Thuan * and Hoang Ngoc Ha

* Corresponding author (ncthuan@nomail.com)

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Received: 25 Jan 2016
Revised: 11 May 2016
Accepted: 08 Jul 2016
Published: 30 Jul 2016
DOI: 10.22144/ctu.jsi.2016.005
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Nguyen, Q. L., Nguyen, C. T., & Hoang, N. H. (2016). A revisit on dissipation and its relation to irreversible processes. CTU Journal of Innovation and Sustainable Development , (Renewable Energy), 29-35. https://doi.org/10.22144/ctu.jsi.2016.005
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No. Special Issue on Renewable Energy (2016)

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Abstract

As usual, industrial process systems operate far from (stable) equilibrium. Under practical operating conditions when putting the system back in equilibrium, this gives rise to the loss of energy (or certain generalized energy). Following the second law of thermodynamics, an irreversible process generates entropy. On the basis of this property, we propose an approach that allows to investigate quantitatively the amount of (generalized) energy lost when the system reaches equilibrium. A liquid phase reactor modelled with the CSTR (continuous stirred tank reactor) in which the acid-catalyzed hydration of 2-3-epoxy-1-propanol to glycerol subject to steady state multiplicity takes place is used to illustrate the results.
Keywords: Entropy, energy, entropy production, irreversibility

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