Chart for Thermoelectric Systems Operation Based on a Ternary Diagram for Bithermal Systems
Thermoelectric system’s operation needs careful attention to ensure optimal power conversion depending on the application aims. As a ternary diagram of bithermal systems allows a synthetic graphical analysis of the performance attainable by any work-heat conversion system, thermoelectric s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-09-01
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| Series: | Entropy |
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| Online Access: | http://www.mdpi.com/1099-4300/20/9/666 |
| _version_ | 1798004133171560448 |
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| author | Julien Ramousse Christophe Goupil |
| author_facet | Julien Ramousse Christophe Goupil |
| author_sort | Julien Ramousse |
| collection | DOAJ |
| description | Thermoelectric system’s operation needs careful attention to ensure optimal power conversion depending on the application aims. As a ternary diagram of bithermal systems allows a synthetic graphical analysis of the performance attainable by any work-heat conversion system, thermoelectric systems operation is plotted as a parametric curve function of the operating conditions (electric current and reservoirs’ temperature), based on the standard model of Ioffe. The threshold of each operating mode (heat engine, heat pump, thermal dissipation, and forced thermal transfer), along with the optimal efficiencies and powers of the heat pump and heat engine modes, are characterized graphically and analytically as a function of the material properties and the operating conditions. The sensibility of the performance aims (maximum efficiency vs. maximum power) with the operating conditions is, thus, highlighted. In addition, the specific contributions of each phenomenon involved in the semiconductor (reversible Seebeck effect, irreversible heat leakage by conduction and irreversible thermal dissipation by Joule effect) are discussed in terms of entropy generation. Finally, the impact of the exo-irreversibilities on the performance is analyzed by taking the external thermal resistances into account. |
| first_indexed | 2024-04-11T12:18:45Z |
| format | Article |
| id | doaj.art-e30a88f963454017bf6a877dcc70995b |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-11T12:18:45Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-e30a88f963454017bf6a877dcc70995b2022-12-22T04:24:10ZengMDPI AGEntropy1099-43002018-09-0120966610.3390/e20090666e20090666Chart for Thermoelectric Systems Operation Based on a Ternary Diagram for Bithermal SystemsJulien Ramousse0Christophe Goupil1Laboratoire Optimisation de la Conception et Ingénierie de l’Environnement (LOCIE), Université Savoie Mont Blanc, UMR 5271 Le Bourget du Lac, FranceLaboratoire Interdisciplinaire des Energies de Demain (LIED), Université Paris Diderot, UMR 8236 Paris, FranceThermoelectric system’s operation needs careful attention to ensure optimal power conversion depending on the application aims. As a ternary diagram of bithermal systems allows a synthetic graphical analysis of the performance attainable by any work-heat conversion system, thermoelectric systems operation is plotted as a parametric curve function of the operating conditions (electric current and reservoirs’ temperature), based on the standard model of Ioffe. The threshold of each operating mode (heat engine, heat pump, thermal dissipation, and forced thermal transfer), along with the optimal efficiencies and powers of the heat pump and heat engine modes, are characterized graphically and analytically as a function of the material properties and the operating conditions. The sensibility of the performance aims (maximum efficiency vs. maximum power) with the operating conditions is, thus, highlighted. In addition, the specific contributions of each phenomenon involved in the semiconductor (reversible Seebeck effect, irreversible heat leakage by conduction and irreversible thermal dissipation by Joule effect) are discussed in terms of entropy generation. Finally, the impact of the exo-irreversibilities on the performance is analyzed by taking the external thermal resistances into account.http://www.mdpi.com/1099-4300/20/9/666finite time thermodynamicsternary diagram for bithermal systemsoperating modesthermoelectric system optimal performancefigure of merit |
| spellingShingle | Julien Ramousse Christophe Goupil Chart for Thermoelectric Systems Operation Based on a Ternary Diagram for Bithermal Systems Entropy finite time thermodynamics ternary diagram for bithermal systems operating modes thermoelectric system optimal performance figure of merit |
| title | Chart for Thermoelectric Systems Operation Based on a Ternary Diagram for Bithermal Systems |
| title_full | Chart for Thermoelectric Systems Operation Based on a Ternary Diagram for Bithermal Systems |
| title_fullStr | Chart for Thermoelectric Systems Operation Based on a Ternary Diagram for Bithermal Systems |
| title_full_unstemmed | Chart for Thermoelectric Systems Operation Based on a Ternary Diagram for Bithermal Systems |
| title_short | Chart for Thermoelectric Systems Operation Based on a Ternary Diagram for Bithermal Systems |
| title_sort | chart for thermoelectric systems operation based on a ternary diagram for bithermal systems |
| topic | finite time thermodynamics ternary diagram for bithermal systems operating modes thermoelectric system optimal performance figure of merit |
| url | http://www.mdpi.com/1099-4300/20/9/666 |
| work_keys_str_mv | AT julienramousse chartforthermoelectricsystemsoperationbasedonaternarydiagramforbithermalsystems AT christophegoupil chartforthermoelectricsystemsoperationbasedonaternarydiagramforbithermalsystems |