Optimizing low-dissipation Carnot-like thermal devices with heat leak

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10506783" target="_blank" >RIV/00216208:11320/25:10506783 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pKONqajZDG" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pKONqajZDG</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/6clc-796q" target="_blank" >10.1103/6clc-796q</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Optimizing low-dissipation Carnot-like thermal devices with heat leak

Popis výsledku v původním jazyce

Delimiting the optimal performance bounds of heat engines (HEs), refrigerators (REs), and heat pumps (HPs) is a core thermodynamic challenge. While low-dissipation (LD) models are valuable for this, the impact of heat leak-unavoidable in real systems-are underexplored. In this paper, we present a unified framework for LD Carnot-like (CL) HEs, REs, and HPs with heat leak, deriving new results for efficiency at maximum power and power at maximum efficiency. Using these, we construct the Pareto fronts, which delineate the optimal power-efficiency trade-offs under realistic conditions. We prove that the bounds of power at fixed efficiency and efficiency at fixed power coincide, forming these fronts, and show that they are achieved by optimizing the average entropy production rate, a principle applicable to all CL devices and beyond the LD assumption.

Název v anglickém jazyce

Optimizing low-dissipation Carnot-like thermal devices with heat leak

Popis výsledku anglicky

Delimiting the optimal performance bounds of heat engines (HEs), refrigerators (REs), and heat pumps (HPs) is a core thermodynamic challenge. While low-dissipation (LD) models are valuable for this, the impact of heat leak-unavoidable in real systems-are underexplored. In this paper, we present a unified framework for LD Carnot-like (CL) HEs, REs, and HPs with heat leak, deriving new results for efficiency at maximum power and power at maximum efficiency. Using these, we construct the Pareto fronts, which delineate the optimal power-efficiency trade-offs under realistic conditions. We prove that the bounds of power at fixed efficiency and efficiency at fixed power coincide, forming these fronts, and show that they are achieved by optimizing the average entropy production rate, a principle applicable to all CL devices and beyond the LD assumption.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review E

ISSN

2470-0045

e-ISSN

2470-0053

Svazek periodika

112

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

034115

Kód UT WoS článku

001564134100007

EID výsledku v databázi Scopus

2-s2.0-105019629572