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Entropy Production in Oscillating Chemical Systems
Karlstad University, Faculty of Technology and Science, Department of Energy, Environmental and Building Technology.
1985 (English)In: Zeitschrift für Naturforschung, 40a, 877-885Article in journal (Refereed)
Abstract [en]

The entropy production in oscillating homogeneous chemical systems is investigated by analyzing the difference between the average entropy production rate in a stable periodic oscillatory mode and in the corresponding unstable stationary state. A general analytical expression for this difference in the neighborhood of a Hopf bifurcation is derived. The entropy production in two typical models of chemical systems with unstable stationary states and stable periodic oscillations is investigated, using fixed concentrations as conrol parameters. The models exemplify both positive and negative entropy production rate differences. One of the investigated models has four free concentrations, the other three. The rate expressions are given by second order mass action kinetics with reverese reactions taken into account. The flows of reactants and products are controlled so that only the free concentrations vary, and the entropy of mixing associated with these flows is discussed

Place, publisher, year, edition, pages
Tübingen, 1985.
National Category
Energy Systems
Research subject
Environmental and Energy Systems
Identifiers
URN: urn:nbn:se:kau:diva-18921OAI: oai:DiVA.org:kau-18921DiVA: diva2:592563
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2013-01-21

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