Fabrication of Skutterudite-Based Tubular Thermoelectric Generator

Jang, Hanhwi; Kim, Jong Bae; Abbey, Stanley; Lee, Suhyeon; Kim, Yeongseon; Park, Sang Hyun

doi:10.3390/en13051106

Cited by 12 publications

(8 citation statements)

References 39 publications

(61 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Alternatively, the internal electric resistance can be measured likewise by application of a small alternating current (AC) signal and an evaluation using Equation (10). The choice of a sufficiently high frequency for the AC current excitation avoids the impact of the Peltier effect but requires additional measurement instrumentation, such as lock-in amplifiers for the separation of the real part and the reactance of the measured impedance.…”

Section: Rapid Steady State Methods (Dlr)mentioning

confidence: 99%

“…A thermocouple operates under a temperature difference between a heat source and a heat sink and generates a thermovoltage at its terminals due to the Seebeck effect. [ 6 ] Apart from mostly used planar types, [ 7,8 ] TEM can be likewise constructed as cylindrical devices [ 9,10 ] to allow an easier installation on pipe‐shaped heat reservoirs. A maximization of TEM performance can be achieved by application of functionally segmented [ 11,12 ] or graded [ 13,14 ] thermocouples or by application of cascaded [ 15,16 ] TEMs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interlaboratory Testing for High‐Temperature Power Generation Characteristics of a Ni‐Based Alloy Thermoelectric Module

et al. 2020

View full text Add to dashboard Cite

Standardization of metrology for thermoelectric generator modules (TEMs) is a necessary step toward industrialization of thermoelectric applications. Unspecified uncertainty budgets of the widely used custom‐built characterization facilities seem insufficient to validate technological developments, industrial benchmarks, or allow sound conclusions in scientific studies. Particularly, works on high‐temperature TEM have to be supported by suitable characterization techniques. This shall accelerate progress toward product releases for thermoelectric energy conversion. Herein, a Ni‐based alloy TEM is reported, which is developed at the National Institute of Advanced Industrial Science and Technology (AIST) as a prospective standard reference TEM. Comparative measurements at AIST and the German Aerospace Center (DLR) demonstrate the high repeatability and precision of custom‐built TEM characterization facilities at AIST and DLR. Tests at elevated temperatures up to 773 K hot side temperature and 450 K temperature difference reveal excellent accordance of electric measurands with a standard deviation <0.3% for the open‐circuit voltage and <0.85% for electric resistance and maximum power output. Deviations of the heat flow measurement of up to 7.22% arise from individual uncertainties of the used characterization methods and point to the importance of standardization for TEM metrology.

show abstract

Section: Rapid Steady State Methods (Dlr)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interlaboratory Testing for High‐Temperature Power Generation Characteristics of a Ni‐Based Alloy Thermoelectric Module

et al. 2020

View full text Add to dashboard Cite

show abstract

“…In recent years, some CoSb 3 -based TE modules (uni-couple [238][239][240][241] and multipair [236,237,[242][243][244][245][246][247][248][249][250])…”

Section: Cosb 3 -Based Te Devicesmentioning

confidence: 99%

A review of CoSb3-based skutterudite thermoelectric materials

et al. 2020

View full text Add to dashboard Cite

The binary skutterudite CoSb3 is a narrow bandgap semiconductor thermoelectric (TE) material with a relatively flat band structure and excellent electrical performance. However, thermal conductivity is very high because of the covalent bond between Co and Sb, resulting in a very low ZT value. Therefore, researchers have been trying to reduce its thermal conductivity by the different optimization methods. In addition, the synergistic optimization of the electrical and thermal transport parameters is also a key to improve the ZT value of CoSb3 material because the electrical and thermal transport parameters of TE materials are closely related to each other by the band structure and scattering mechanism. This review summarizes the main research progress in recent years to reduce the thermal conductivity of CoSb3-based materials at atomic-molecular scale and nano-mesoscopic scale. We also provide a simple summary of achievements made in recent studies on the non-equilibrium preparation technologies of CoSb3-based materials and synergistic optimization of the electrical and thermal transport parameters. In addition, the research progress of CoSb3-based TE devices in recent years is also briefly discussed.

show abstract

“…This is because of the difficulty in adapting the heat source to the thermoelectric device, which makes it more costly, heavier, and more cumbersome. As a result, other designs are being investigated to overcome these drawbacks, although most of them, like the cylindrical shape [23][24][25], are still at the laboratory stage. This is the subject of limited studies, unlike thick and thin films and flexible TE devices, which are being developed more effectively [26].…”

Section: Thermoelectric Modulesmentioning

confidence: 99%

A Review on Thermoelectric Generators: Progress and Applications

Zoui

Bentouba

Stocholm³

et al. 2020

Energies

213

108

View full text Add to dashboard Cite

A thermoelectric effect is a physical phenomenon consisting of the direct conversion of heat into electrical energy (Seebeck effect) or inversely from electrical current into heat (Peltier effect) without moving mechanical parts. The low efficiency of thermoelectric devices has limited their applications to certain areas, such as refrigeration, heat recovery, power generation and renewable energy. However, for specific applications like space probes, laboratory equipment and medical applications, where cost and efficiency are not as important as availability, reliability and predictability, thermoelectricity offers noteworthy potential. The challenge of making thermoelectricity a future leader in waste heat recovery and renewable energy is intensified by the integration of nanotechnology. In this review, state-of-the-art thermoelectric generators, applications and recent progress are reported. Fundamental knowledge of the thermoelectric effect, basic laws, and parameters affecting the efficiency of conventional and new thermoelectric materials are discussed. The applications of thermoelectricity are grouped into three main domains. The first group deals with the use of heat emitted from a radioisotope to supply electricity to various devices. In this group, space exploration was the only application for which thermoelectricity was successful. In the second group, a natural heat source could prove useful for producing electricity, but as thermoelectricity is still at an initial phase because of low conversion efficiency, applications are still at laboratory level. The third group is progressing at a high speed, mainly because the investigations are funded by governments and/or car manufacturers, with the final aim of reducing vehicle fuel consumption and ultimately mitigating the effect of greenhouse gas emissions.

show abstract

Fabrication of Skutterudite-Based Tubular Thermoelectric Generator

Cited by 12 publications

References 39 publications

Interlaboratory Testing for High‐Temperature Power Generation Characteristics of a Ni‐Based Alloy Thermoelectric Module

Interlaboratory Testing for High‐Temperature Power Generation Characteristics of a Ni‐Based Alloy Thermoelectric Module

A review of CoSb3-based skutterudite thermoelectric materials

A Review on Thermoelectric Generators: Progress and Applications

Contact Info

Product

Resources

About