More Stages Decrease Dissipation in Irreversible Step Processes

The dissipation in an irreversible step process is reduced when the number of steps is increased in any refinement of the steps in the process. This is a consequence of the ladder theorem, which states that, for any irreversible process proceeding by a sequence of relaxations, dividing any relaxatio...

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Main Authors: Peter Salamon, Bjarne Andresen, James Nulton, Ty N. F. Roach, Forest Rohwer
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Entropy
Subjects:
Online Access:https://www.mdpi.com/1099-4300/25/3/539
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author Peter Salamon
Bjarne Andresen
James Nulton
Ty N. F. Roach
Forest Rohwer
author_facet Peter Salamon
Bjarne Andresen
James Nulton
Ty N. F. Roach
Forest Rohwer
author_sort Peter Salamon
collection DOAJ
description The dissipation in an irreversible step process is reduced when the number of steps is increased in any refinement of the steps in the process. This is a consequence of the ladder theorem, which states that, for any irreversible process proceeding by a sequence of relaxations, dividing any relaxation step into two will result in a new sequence that is more efficient than the original one. This results in a more-steps-the-better rule, even when the new sequence of steps is not reoptimized. This superiority of many steps is well established empirically in, e.g., insulation and separation applications. In particular, the fact that the division of any step into two steps improves the overall efficiency has interesting implications for biological evolution and emphasizes thermodynamic length as a central measure for dissipation.
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spelling doaj.art-95c95aa740b04669a09c40b0aed757fa2023-11-17T10:57:38ZengMDPI AGEntropy1099-43002023-03-0125353910.3390/e25030539More Stages Decrease Dissipation in Irreversible Step ProcessesPeter Salamon0Bjarne Andresen1James Nulton2Ty N. F. Roach3Forest Rohwer4Department of Mathematics, San Diego State University, San Diego, CA 92182, USANiels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, DenmarkDepartment of Mathematics, San Diego State University, San Diego, CA 92182, USADepartment of Biology, San Diego State University, San Diego, CA 92182, USADepartment of Biology, San Diego State University, San Diego, CA 92182, USAThe dissipation in an irreversible step process is reduced when the number of steps is increased in any refinement of the steps in the process. This is a consequence of the ladder theorem, which states that, for any irreversible process proceeding by a sequence of relaxations, dividing any relaxation step into two will result in a new sequence that is more efficient than the original one. This results in a more-steps-the-better rule, even when the new sequence of steps is not reoptimized. This superiority of many steps is well established empirically in, e.g., insulation and separation applications. In particular, the fact that the division of any step into two steps improves the overall efficiency has interesting implications for biological evolution and emphasizes thermodynamic length as a central measure for dissipation.https://www.mdpi.com/1099-4300/25/3/539minimizing dissipationrelaxationstep processessequential processesthermodynamic length
spellingShingle Peter Salamon
Bjarne Andresen
James Nulton
Ty N. F. Roach
Forest Rohwer
More Stages Decrease Dissipation in Irreversible Step Processes
Entropy
minimizing dissipation
relaxation
step processes
sequential processes
thermodynamic length
title More Stages Decrease Dissipation in Irreversible Step Processes
title_full More Stages Decrease Dissipation in Irreversible Step Processes
title_fullStr More Stages Decrease Dissipation in Irreversible Step Processes
title_full_unstemmed More Stages Decrease Dissipation in Irreversible Step Processes
title_short More Stages Decrease Dissipation in Irreversible Step Processes
title_sort more stages decrease dissipation in irreversible step processes
topic minimizing dissipation
relaxation
step processes
sequential processes
thermodynamic length
url https://www.mdpi.com/1099-4300/25/3/539
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