TY - JOUR
T1 - Optimization Criteria and Efficiency of a Thermoelectric Generator
AU - Juárez-Huerta, V. H.
AU - Sánchez-Salas, N.
AU - Chimal-Eguía, J. C.
N1 - Publisher Copyright:
© 2022 by the authors.
PY - 2022/12
Y1 - 2022/12
N2 - The efficiency of a thermoelectric generator model under maximum conditions is presented for two optimization criteria proposed under the context of finite-time thermodynamics, namely, the efficient power criterion and the Omega function, where this last function represents a trade-off between useful and lost energy. The results are compared with the performance of the device at maximum power output. A macroscopic thermoelectric generator (TEG) model with three possible sources of irreversibilities is considered: (Formula presented.) the electric resistance R for the Joule heating, (Formula presented.) the thermal conductances (Formula presented.) and (Formula presented.) of the heat exchangers between the thermal baths and the TEG, and (Formula presented.) the internal thermal conductance K for heat leakage. In particular, two configurations of the macroscopic TEG are studied: the so-called exoreversible case and the endoreversible limit. It shows that for both TEG configurations, the efficiency at maximum Omega function is always greater than that obtained in conditions of maximum efficient power, and this in turn is greater than that of the maximum power regime.
AB - The efficiency of a thermoelectric generator model under maximum conditions is presented for two optimization criteria proposed under the context of finite-time thermodynamics, namely, the efficient power criterion and the Omega function, where this last function represents a trade-off between useful and lost energy. The results are compared with the performance of the device at maximum power output. A macroscopic thermoelectric generator (TEG) model with three possible sources of irreversibilities is considered: (Formula presented.) the electric resistance R for the Joule heating, (Formula presented.) the thermal conductances (Formula presented.) and (Formula presented.) of the heat exchangers between the thermal baths and the TEG, and (Formula presented.) the internal thermal conductance K for heat leakage. In particular, two configurations of the macroscopic TEG are studied: the so-called exoreversible case and the endoreversible limit. It shows that for both TEG configurations, the efficiency at maximum Omega function is always greater than that obtained in conditions of maximum efficient power, and this in turn is greater than that of the maximum power regime.
KW - endoreversible limit
KW - exoreversible thermal engine
KW - finite time thermodynamics
KW - thermoelectric generator
UR - http://www.scopus.com/inward/record.url?scp=85144660820&partnerID=8YFLogxK
U2 - 10.3390/e24121812
DO - 10.3390/e24121812
M3 - Artículo
C2 - 36554217
AN - SCOPUS:85144660820
SN - 1099-4300
VL - 24
JO - Entropy
JF - Entropy
IS - 12
M1 - 1812
ER -