Performance analysis and validation of thermoelectric energy harvesters

Abdelkefi, Abdessattar; Alothman, Abdulaziz; Hajj, Muhammad R.

doi:10.1088/0964-1726/22/9/095014

Cited by 16 publications

(25 citation statements)

References 30 publications

(43 reference statements)

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“…Using their experimental values for the temperature difference ∆T = 20K, we obtain Figure 8. This last Figure 8 is consistent with that obtained by Abdelkefi, see Figure 6 in [23].…”

Section: Resultssupporting

confidence: 92%

“…We suggest that this work could lead to a new scheme for the design of composite thermoelectric systems. Figures 8-10 show the consistency of our results with other works, because they exhibit a behavior qualitatively similar to results reported in other recent studies [23][24][25].…”

Section: Discussionsupporting

confidence: 91%

“…In an analytical electrothermal model developed and validated using experimental measurements, Abdelkefi et.al. [23], study the performance and validation of thermoelectric energy harvesters. Using their experimental values for the temperature difference ∆T = 20K, we obtain Figure 8.…”

Section: Resultsmentioning

confidence: 99%

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Maximum Power of Thermally and Electrically Coupled Thermoelectric Generators

Camacho-Medina

Olivares-Robles

Vargas-Almeida

et al. 2014

Entropy

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Abstract:In a recent work, we have reported a study on the figure of merit of a thermoelectric system composed by thermoelectric generators connected electrically and thermally in different configurations. In this work, we are interested in analyzing the output power delivered by a thermoelectric system for different arrays of thermoelectric materials in each configuration. Our study shows the impact of the array of thermoelectric materials in the output power of the composite system. We evaluate numerically the corresponding maximum output power for each configuration and determine the optimum array and configuration for maximum power. We compare our results with other recently reported studies.

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“…Using their experimental values for the temperature difference ∆T = 20K, we obtain Figure 8. This last Figure 8 is consistent with that obtained by Abdelkefi, see Figure 6 in [23].…”

Section: Resultssupporting

confidence: 92%

Section: Discussionsupporting

confidence: 91%

See 1 more Smart Citation

Maximum Power of Thermally and Electrically Coupled Thermoelectric Generators

Camacho-Medina

Olivares-Robles

Vargas-Almeida

et al. 2014

Entropy

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“…To confirm the validity of our results, we have built plots for CTEG output power using ΔT values of some work: [21] (experimental) and [22,23] (analytical). Plots in Figure 9 were produced using the temperature difference of Ref.…”

Section: Thermoelectrics For Power Generation -A Look At Trends In Thmentioning

confidence: 52%

“…with L 12 ¼ L 21 . Since ∇ð−μ e =TÞ¼−μ e ∇ð1=TÞ−1=T∇ðμ e Þ, then heat flow and electrical current read:…”

Section: Coupled Fluxes Of Heat and Electrical Chargesmentioning

confidence: 99%

Performance Analysis of Composite Thermoelectric Generators

Almeida¹,

Olivares-Robles²,

Ouerdane³

2016

Thermoelectrics for Power Generation - A Look at Trends in the Technology

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Composite thermoelectric generators (CTEGs) are thermoelectric systems composed of different modules arranged under various thermal and electrical configurations (series and/or parallel). The interest for CTEGs stems from the possibility to improve device performance by optimization of configuration and working conditions. Actual modeling of CTEGs rests on a detailed understanding of the nonequilibrium thermodynamic processes at the heart of coupled transport and thermoelectric conversion. In this chapter, we provide an overview of the linear out-of-equilibrium thermodynamics of the electron gas, which serves as the working fluid in CTEGs. The force-flux formalism yields phenomenological linear, coupled equations at the macroscopic level, which describe the behavior of CTEGs under different configurations. The relevant equivalent quantities-figure of merit, efficiency, and output power-are formulated and calculated for two different configurations. Our results show, that system performance in each of these configurations is influenced by combination of different materials and their ordering, that is, position in the arrangement structure. The primary objective of our study is to contribute new design guidelines for development of composite thermoelectric devices that combine different materials, taking advantage of the performance of each in proper temperature range and type of configuration.

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