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Efficiency at Maximum Power of Irreversible Engines with Asymmetric Nonlinear Flux-Force Relations

Journal Contribution - Journal Article

The efficiency at maximum power (EMP) is investigated for classical irreversible thermal or chemical model engines. The heat or particle transport is governed by flux-force relations of the general power-law type. Special attention is given to engines that feature asymmetric transport laws, one for input (of heat or particles) and a different one for output. It is shown that in a couple of case studies, the EMP of such engines is close to the lowest of the two EMPs that would result for symmetric implementations of the transport laws. As a consequence, ideal efficiency at maximum power is only possible in the model in which both flux-force relations are of step-function type.
Journal: Journal of Physical Chemistry B
ISSN: 1520-6106
Issue: 13
Volume: 122
Pages: 3615 - 3619
Publication year:2018
BOF-keylabel:yes
IOF-keylabel:yes
BOF-publication weight:1
CSS-citation score:1
Authors from:Higher Education