Evaluation of energy efficiency of thermoelectric generator with two-phase thermo-syphon heat pipes and nano-particle fluids

Atalay, Tahsin; Köysal, Yavuz; Özdemir, Ali Ekber; Özbaş, Engin

doi:10.1007/s40684-018-0001-1

Cited by 20 publications

(6 citation statements)

References 29 publications

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“…Recently, researchers recommend integrating TEG with some heat recovery methods, such as heat exchangers, PCM, and HP, where the benefits that this hybrid heat recovery system may offer are worth further experimental studies. In addition, commercially developing this system may result in agreeable outcomes, as noticed in various researches [104]. Furthermore, it is noticed that HEs with TEG are highly recommended.…”

Section: Teg In Heat Recovery Systemsmentioning

confidence: 79%

Thermoelectric Power Generators: State-of-the-Art, Heat Recovery Method, and Challenges

et al. 2021

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Electricity plays a significant role in daily life and is the main component of countless applications. Thus, ongoing research is necessary to improve the existing approaches, or find new approaches, to enhancing power generation. The thermoelectric generator (TEG) is among the notable and widespread technologies used to produce electricity, and converts waste energy into electrical energy using the Seebeck effect. Due to the Seebeck effect, temperature change can be turned into electrical energy; hence, a TEG can be applied whenever there is a temperature difference. The present paper presents the theoretical background of the TEG, in addition to a comprehensive review of the TEG and its implementation in various fields. This paper also sheds light on the new technologies of the TEG and their related challenges. Notably, it was found that the TEG is efficient in hybrid heat recovery systems, such as the phase change material (PCM), heat pipe (HP), and proton exchange membrane (PEM), and the efficiency of the TEG has increased due to a set of improvements in the TEG’s materials. Moreover, results show that the TEG technology has been frequently applied in recent years, and all of the investigated papers agree that the TEG is a promising technology in power generation and heat recovery systems.

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Section: Teg In Heat Recovery Systemsmentioning

confidence: 79%

Thermoelectric Power Generators: State-of-the-Art, Heat Recovery Method, and Challenges

et al. 2021

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“…Atalay et al developed a TEG system with twophase thermosyphon heat pipes and nanofluids [183]. Figure 20 shows the physical structure of the TEG system with two-phase thermosyphon heat pipes and nanofluids.…”

Section: Structurementioning

confidence: 99%

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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“…22 The required devices are considerably expensive and heavy, 23 and the TEM power production is improved by less than 225%. 24,25 To solve the aforementioned problems and constructing a novel solar-powered thermoelectric-based mobile charger to harvest solar energy, a novel scheme without the disadvantages of the direct and indirect techniques is proposed in this study. The proposed scheme is to attach a small refractive/reflective concentrator to a TEM to significantly increase its power production.…”

Section: Introductionmentioning

confidence: 99%

“…As an alternative, heat wasted by a device such as a PV panel is put to practical use 22 . The required devices are considerably expensive and heavy, 23 and the TEM power production is improved by less than 225% 24,25 …”

Section: Introductionmentioning

confidence: 99%

Novel solar‐powered thermoelectric‐based mobile charger with the capability of operating with different small refractive/reflective concentrators

Fathabadi¹

2021

Intl J of Energy Research

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The output power of a thermoelectric module (TEM) is not high enough to harvest trivial heat, so it cannot be used to directly harvest solar heat. In this study, a novel method is proposed to utilize a TEM to directly harvest solar energy. The proposed scheme is to attach a small refractive/reflective concentrator to the hot surface of the TEM. In this regard, a novel solar-powered thermoelectric-based mobile charger has been built to provide experimental verification. Four different small concentrators with similar size; a refractive compound parabolic concentrator (CPC), a reflective CPC, a refractive prism concentrator and a reflective prism concentrator are considered to attach to the TEM of the built mobile charger. The theoretical basis of the proposed idea is formulated by presenting new formulas proved and given for the first time in this study. It is shown that in theory, attaching the four mentioned small concentrators to the TEM increases the power production of the TEM of the charger by 1712%, 1941%, 2083% and 1797%, respectively. Experimental results are presented that verify theoretical concepts and calculations presented in this work. Comparing the proposed technique realized in this study with two available techniques (direct and indirect techniques) reported in the literature substantiates the novelty and contributions of this work.

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Evaluation of energy efficiency of thermoelectric generator with two-phase thermo-syphon heat pipes and nano-particle fluids

Cited by 20 publications

References 29 publications

Thermoelectric Power Generators: State-of-the-Art, Heat Recovery Method, and Challenges

Thermoelectric Power Generators: State-of-the-Art, Heat Recovery Method, and Challenges

Advances and outlook of TE-PCM system: a review

Novel solar‐powered thermoelectric‐based mobile charger with the capability of operating with different small refractive/reflective concentrators

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