Development of selection criteria of zeotropic mixtures as working fluids for the trans-critical organic Rankine cycle

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F23%3APU150565" target="_blank" >RIV/00216305:26210/23:PU150565 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0360544223012057?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0360544223012057?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.energy.2023.127811" target="_blank" >10.1016/j.energy.2023.127811</a>

Result language
angličtina
Original language name
Development of selection criteria of zeotropic mixtures as working fluids for the trans-critical organic Rankine cycle
Original language description
The trans-critical organic Rankine cycle (TCORC) can achieve a better thermal match in the heating process of the working fluid compared to the subcritical cycle. By using zeotropic mixtures as working fluids, the thermal match in the cooling process can be further optimized, reducing the system's irreversibility. As the selection criteria are not systematically formulated, screening zeotropic mixtures for the TCORC is challenging. In this work, the thermodynamic and thermo-economic analysis was carried out to investigate how the thermal match in the heating/cooling processes affects the system performance, which is represented by the overall exergy efficiency and the levelized energy cost. Results show that the mixture's critical temperature is a key factor influencing the system performance. Then, the mixtures having a proper condensation temperature glide can further improve the system performance. The thermo-economic analysis shows that the mixtures selected according to these criteria can also provide better thermo-economic performance, although the heat exchanger area has been enlarged during the improvement of the thermal match in heat exchangers.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20303 - Thermodynamics

Project
<a href="/en/project/EF15_003%2F0000456" target="_blank" >EF15_003/0000456: Sustainable Process Integration Laboratory (SPIL)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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