Multi-parameter optimization design of thermoelectric harvester based on phase change material for space generation

Zhu, Wei; Tu, Yubin; Deng, Yuan

doi:10.1016/j.apenergy.2018.06.151

Cited by 27 publications

(12 citation statements)

References 33 publications

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“…According to this scientific thinking, researchers have made efforts to apply improved PCMs into TEG-PCM systems for enhancing performance in past decade. Zhu et al demonstrated that the total electrical energy of TEGs could be largely enhanced through multi-parameter optimization design of PCMs [162]. The results validated that the maximum output power could be obtained when the phase change temperature of PCM is approximately equal to the average operating temperature of TEG.…”

Section: Pcmmentioning

confidence: 89%

Advances and outlook of TE-PCM system: a review

Liu

Xie

et al. 2022

Carb Neutrality

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This review reports the most recent developments of thermoelectric (TE) system coupled with phase change material (PCM) and its promising integration options within various PCM deployment and structure design. These innovative TE coupled with PCM (TE-PCM) systems provide heat/cold energy with additional electric power which implies better harnessing of multiform energy. Fundamentals of TE-PCM system including thermoelectric effect are presented along with a basic mathematical formulation of the physical problem. The classification principles and configuration types of such systems are also summarized. The most representative studies related to the utilization of TE-PCM system in diversified application scenarios and their compatibility with other energy systems have been comprehensively reviewed and analyzed, including the component and structure optimization. In-depth analysis of the main technical and operational challenges in the future has been carried out, and the prospective development of more efficient TE-PCM system and its hybrid configurations are projected based on the current technological level.

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Section: Pcmmentioning

confidence: 89%

Advances and outlook of TE-PCM system: a review

Liu

Xie

et al. 2022

Carb Neutrality

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“…As a result, these systems have found various applications including body heat energy conversion and sensing, [1][2][3] waste heat recovery in cars, [4][5][6] solar evaporation-thermoelectric system, 7 and energy generation for space missions. 8,9 Other novel thermoelectric applications involve energy generation at night via radiative cooling 10 and also thermoelectric power plants to make energy generation more water and CO 2 parsimonious. 11 Energy conversion efficiency and thermal reliability under thermal loading are the most important design parameters for thermoelectric energy conversion systems.…”

Section: Introductionmentioning

confidence: 99%

“…Thermoelectric energy conversion systems have several advantages of being reliable, silent in operation, environmentally friendly, and compact without any moving parts. As a result, these systems have found various applications including body heat energy conversion and sensing, 1‐3 waste heat recovery in cars, 4‐6 solar evaporation–thermoelectric system, 7 and energy generation for space missions 8,9 . Other novel thermoelectric applications involve energy generation at night via radiative cooling 10 and also thermoelectric power plants to make energy generation more water and CO 2 parsimonious 11 …”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of energy conversion efficiency and thermal reliability of novel, unileg segmented thermoelectric generation systems

Aljaghtham

Çelik

2021

Int J Energy Res

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Despite their great potential to recover waste heat, thermoelectric generators (TEGs) find limited usage since thermoelectric materials are only efficient within a limited temperature range. Using multiple materials in segmented TEGs can significantly enhance the overall energy conversion efficiency. However, thermal reliability is questionable in these systems especially at elevated temperatures and in annular configurations. This study explores the feasibility of utilizing unileg (single material) segmented TEG configuration as a remedy for the thermal stress problem. This study introduces the concept of unileg, segmented thermoelectric configurations (flat and annular) for the first time, and three-dimensional finite element simulations are conducted to investigate the thermoelectric performance and thermal reliability analysis in comparison with the conventional unicouple (dual material) systems. Results indicate that thermal stresses are significantly lowered in unileg systems compared to the unicouple configuration. In addition to the enhanced thermal reliability, power generation and thermoelectric conversion efficiency are higher in unileg systems since the material with higher performance is used solely eliminating the need of poorly performing, second thermoelectric leg material.

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“…The numerical simulation and experimental study revealed that the use of paraffin/5 wt% expanded graphite PCM enhanced the total energy output of the TEG by 32.32% compared to the TEG with pure paraffin PCM. Similarly, Zhu et al [35] performed a multi-parameter optimization of a thermoelectric generator integrated with phase change material for space application. Results from the transient thermal study showed that choosing PCM with a suitable melting temperature is an effective method to enhance the overall power output of the TEG.…”

Section: Introductionmentioning

confidence: 99%

Transient and non-uniform heat flux effect on solar thermoelectric generator with phase change material

Shittu

Xuan

et al. 2020

Applied Thermal Engineering

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Transient and non-uniform heat flux from solar concentrators can affect the performance of solar thermoelectric generators, which generate electricity from concentrated solar radiation. Therefore, this paper presents a detailed three-dimensional study on the effect of transient and non-uniform heat flux on the performance of a solar thermoelectric generator (STEG). COMSOL 5.4Multiphysics software is utilized for the numerical study while the non-uniform heat flux from a compound parabolic concentrator is obtained through ray tracing simulation using Lighttools software. Varying solar radiation under typical partly cloudy weather condition is utilized. Furthermore, phase change material (PCM) is used to reduce the effect of transient and nonuniform heat flux therefore; it is positioned at the top surface of the solar thermoelectric generator.A comparison between the performance of the STEG with and without PCM is presented, and a parametric study on the effect of PCM fins and PCM height on the STEG performance is carried out. Results show that the place of PCM on the top surface of the solar thermoelectric generator is an effective approach to provide a stable electrical performance form the STEG under varying weather conditions. Furthermore, results reveal the effectiveness of the phase change material in protecting the solar thermoelectric generator under highly concentrated solar radiation. This study will provide valuable design guidance for solar thermoelectric generators under varying weather conditions and with solar concentrators, which produce non-uniform heat flux.

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Multi-parameter optimization design of thermoelectric harvester based on phase change material for space generation

Cited by 27 publications

References 33 publications

Advances and outlook of TE-PCM system: a review

Advances and outlook of TE-PCM system: a review

Numerical analysis of energy conversion efficiency and thermal reliability of novel, unileg segmented thermoelectric generation systems

Transient and non-uniform heat flux effect on solar thermoelectric generator with phase change material

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