Thermally Induced Delamination of PV-TEG: Implication of Leg’s Joule and Thomson Heating

Maduabuchi, Chika; Mgbemene, Chigbo A.; Ibeagwu, Onyebuchi Isreal

doi:10.1007/s11664-020-08390-6

Cited by 28 publications

(13 citation statements)

References 24 publications

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“…It must be stated that high thermal stresses are not favorable in PV‐TE systems and should be reduced at all cost. However, only Reference 12 has studied these stresses till date. Even though the leg geometry considered in the cited paper was the trapezoidal leg configuration, it provided a general overview of the adverse effects of thermal stresses on PV‐TE system performance.…”

Section: Resultsmentioning

confidence: 99%

Effects of leg geometry and multistaging of thermoelectric modules on the performance of a photovoltaic‐thermoelectric system using different photovoltaic cells

Maduabuchi

Lamba

Njoku

et al. 2021

Intl J of Energy Research

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Section: Resultsmentioning

confidence: 99%

Effects of leg geometry and multistaging of thermoelectric modules on the performance of a photovoltaic‐thermoelectric system using different photovoltaic cells

Maduabuchi

Lamba

Njoku

et al. 2021

Intl J of Energy Research

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“…The three-dimensional energy and electrical current conservation equations are given as. [32][33][34]…”

Section: Thermoelectric Generatormentioning

confidence: 99%

Solar power generation using a two‐stage X‐leg thermoelectric generator with high‐temperature materials

2021

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Due to the adverse impacts of fossil fuel sources on the environment and human health, research aimed at generating electricity from the sun has gained increased interest. These adverse effects are more pronounced in thirdworld countries, like Nigeria, which rely heavily on fossil fuel sources for power generation. Nevertheless, Nigeria has an abundant supply of solar energy. Thus, the use of solid-state devices, called thermoelectric generators (TEGs), in harvesting solar energy is a very profitable and clean power generation method. However, these devices are characterised by low efficiencies. Previous scholars showed that altering the thermoelectric leg geometry improved device efficiency. It was also demonstrated that using two-stage TEGs improved device performance. Despite the improvements obtained from these recommendations, we notice that a two-stage TEG design that uses an altered/ variable leg geometry configuration has not been designed before. Thus, we present numerical modelling and optimisation of a two-stage TEG with X-leg geometry configuration using isoflux conditions. The optimised parameters are the external load resistance, taper angle of the X-leg and concentration ratio of the solar concentrator. Finally, we consider the effect of using hightemperature materials in a two-stage design.

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“…This is due to the peculiar merits offered by thermoelectric devices such as zero environmental pollution, robustness, compactness and noiseless operation 3,4 . TEGs are solid state devices that are capable of generating electricity from heat directly based on Seebeck effect 5,6 . This thermoelectric effect postulates that the existence of a temperature gradient between the junctions of two dissimilar metals generates an electrical voltage 7,8 .…”

Section: Introductionmentioning

confidence: 99%

“…3,4 TEGs are solid state devices that are capable of generating electricity from heat directly based on Seebeck effect. 5,6 This thermoelectric effect postulates that the existence of a temperature gradient between the junctions of two dissimilar metals generates an electrical voltage. 7,8 The effect further stated that the magnitude of the voltage generated will be proportional to the temperature gradient maintained across both junctions.…”

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confidence: 99%

Multi‐dimensional optimization of a concentrated solar thermoelectric generator

Maduabuchi

Lamba

Eke

et al. 2021

Intl J of Energy Research

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Summary Research on thermoelectric geometry optimization has focused on stand‐alone thermoelectric devices utilizing energy analysis. This paper considers the multi‐parameter optimization of a solar‐powered thermoelectric generator using exergy analysis since it is more comprehensive than energy analysis. Results indicate that the energy and exergy efficiencies are minimally affected by very high optical concentration ratio values. Also, for achieving maximum performance, larger thermoelectric leg cross‐sectional area to length ratios should be used, the load resistance connected must be kept at an optimum value of 0.06 normalΩ, and an optimal hot junction temperature of 489.8 K are required to obtain maximum performance from the device. Finally, the thermoelement area to length ratio is increased by 10% for maximum system performance.

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Thermally Induced Delamination of PV-TEG: Implication of Leg’s Joule and Thomson Heating

Cited by 28 publications

References 24 publications

Effects of leg geometry and multistaging of thermoelectric modules on the performance of a photovoltaic‐thermoelectric system using different photovoltaic cells

Effects of leg geometry and multistaging of thermoelectric modules on the performance of a photovoltaic‐thermoelectric system using different photovoltaic cells

Solar power generation using a two‐stage X‐leg thermoelectric generator with high‐temperature materials

Multi‐dimensional optimization of a concentrated solar thermoelectric generator

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