Low-temperature co-fired ceramic-based thermoelectric generator with cylindrical grooves for harvesting waste heat from power circuits

Jaziri, Nesrine; Müller, Jens; Müller, Björn; Boughamoura, A.; Gutzeit, Nam; Mezghani, Brahim; Kouki, Ammar B.; Tounsi, Farès

doi:10.1016/j.applthermaleng.2020.116367

Cited by 12 publications

(7 citation statements)

References 38 publications

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“…The measurements of the three TEGs shown in Figure 10C,D are highlighted. A comparative analysis of the maximum power of the TEG stack of three modules with the generator presented by Jaziri et al shows that the output achieved by the generator manufactured here is relatively low 45 . The Ag/PdAg TEG reached a performance more than two orders of magnitude higher than the CCO/Ag generator shown in this work, but at nearly three times the number of thermocouples and a 37% higher gradient.…”

Section: Resultsmentioning

confidence: 48%

“…A comparative analysis of the maximum power of the TEG stack of three modules with the generator presented by Jaziri et al shows that the output achieved by the generator manufactured here is relatively low. 45 The Ag/PdAg TEG reached a performance more than two orders of magnitude higher than the CCO/Ag generator shown in this work, but at nearly three times the number of thermocouples and a 37% higher gradient. The second Ag/Ni-based TEG presented by Jaziri et al also produced about eight times the power outputs, but with three times the number of thermocouples by 75% of the temperature gradient.…”

Section: Resultsmentioning

confidence: 54%

“…Jaziri et al presented one Ag/PdAg and one Ag/Ni-based TEG with 104 thermocouples on a LTCC substrate, which was fabricated by screen printing. 45 The first one achieved an electrical power output of 81 μW at a temperature gradient of 114 K, while the AgNi-based one achieved an electrical power of 4.6 μW at 62 K difference. Markowski also demonstrated a screen-printed Ag/PdAg-based TEG.…”

Section: Processing Of Tegsmentioning

confidence: 98%

“…Some studies have already successfully demonstrated the capability of LTCC substrates for the manufacturing of TEG by using existing printing technologies. Jaziri et al presented one Ag/PdAg and one Ag/Ni‐based TEG with 104 thermocouples on a LTCC substrate, which was fabricated by screen printing 45 . The first one achieved an electrical power output of 81 μW at a temperature gradient of 114 K, while the AgNi‐based one achieved an electrical power of 4.6 μW at 62 K difference.…”

Section: Introductionmentioning

confidence: 99%

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Experimental application of a laser‐based manufacturing process to develop a free customizable, scalable thermoelectric generator demonstrated on a hot shaft

Abt

Kruppa

Wolf

et al. 2022

Engineering Reports

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Geometry, design, and processing in addition to the thermoelectric material properties have a significant influence on the economic efficiency and performance of thermoelectric generators (TEGs). While conventional BULK TEGs are elaborate to manufacture and allow only limited variations in geometry, printed TEGs are often restricted in their application and processing temperature due to the use of organic materials. In this work, a proof‐of‐concept for fabricating modular, customizable, and temperature‐stable TEGs is demonstrated by applying an alternative laser process. For this purpose, low temperature cofired ceramics substrates were coated over a large area, freely structured and cut without masks by a laser and sintered to a solid structure in a single optimized thermal post‐processing. A scalable design with complex geometry and large cooling surface for application on a hot shaft was realized to prove feasibility. Investigations on sintering characteristics up to a peak temperature of 1173 K, thermoelectric material properties and temperature distribution were carried out for a Ca3Co4O9/Ag‐based prototype and evaluated using profilometer, XRD, and IR measurements. For a combined post‐processing, an optimal sintering profile could be determined at 1073 K peak temperature with a 20 min holding time. Temperature gradients of up to 100 K could be achieved along a thermocouple. A single TEG module consisting of 12 thermocouples achieved a maximum power of 0.224 μW and open‐circuit voltage of 134.41 mV at an average hot‐side temperature of 413.6 K and temperature difference of 106.7 K. Three of these modules combined into a common TEG with a total of 36 thermocouples reached a maximum power of 0.58 K and open‐circuit voltage of 319.28 mV with a lesser average hot‐side temperature of 387.8 K and temperature difference of 83.4 K.

show abstract

Section: Resultsmentioning

confidence: 48%

Section: Resultsmentioning

confidence: 54%

Section: Processing Of Tegsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental application of a laser‐based manufacturing process to develop a free customizable, scalable thermoelectric generator demonstrated on a hot shaft

Abt

Kruppa

Wolf

et al. 2022

Engineering Reports

View full text Add to dashboard Cite

show abstract

“…Unlike silicon-based or polymer-based flexible electronics, the LTCC technology withstands temperatures up to 500 °C, which marks its suitability for integrating harsh environmental applications. 13 Besides the choice of materials compatible with the technology, improving the performance of a TEG requires the grouping of several thermal optimization techniques. Hence, the proposed LTCC-based TEG structure will use a recently introduced Y-type arrangement of thermocouples to avoid an ultra-thick substrate, optimize the heat flow, and allow the control of thermocouple lengths.…”

Section: Introductionmentioning

confidence: 99%