Design optimization of oil pan thermoelectric generator to recover waste heat from internal combustion engines

Aljaghtham, Mutabe; Çelik, Emrah

doi:10.1016/j.energy.2020.117547

Cited by 55 publications

(19 citation statements)

References 40 publications

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“…In ANSYS numerical model, three‐dimensional, 20‐node coupling element SOLID226 was used to simulate TEG system, and a general circuit element, CIRCU124, was selected to define the load resistance similar to the reference study 39 . The reliability and accuracy of this model were validated with the analytical 40 model and a previously reported numerical study 17 as shown in the supplementary section (Figure S4). After validating the accuracy of the numerical simulations, the model was applied for different configurations of flat and annular (unicouple and unileg) segmented TE systems.…”

Section: Methodsmentioning

confidence: 77%

“…The choice of thermoelectric materials used in these systems as well as the geometric configuration can directly affect TEG reliability and TE performance. [12][13][14][15][16][17] Increasing the temperature gradient between the hot and cold surfaces of TEG also plays a significant role in maximizing the TE power output. However, thermoelectric materials are efficient within limited temperature ranges, and these materials are not suitable to perform efficiently in large temperature gradients.…”

Section: Introductionmentioning

confidence: 99%

“…Energy conversion efficiency and thermal reliability under thermal loading are the most important design parameters for thermoelectric energy conversion systems. The choice of thermoelectric materials used in these systems as well as the geometric configuration can directly affect TEG reliability and TE performance 12‐17 . Increasing the temperature gradient between the hot and cold surfaces of TEG also plays a significant role in maximizing the TE power output.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Methodsmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…The TEGs can possess high potential performance by recover this heat to enhance fuel efficiency. M. Aljaghtham et al [75] investigated a high thermal gradient is creating in air cooling at the bottom surface and hot oil at the top surface of TEG for the TEG conversion. They optimized TEG numbers and measures in their work.…”

Section: High-power Applicationsmentioning

confidence: 99%

Current and Future Trend Opportunities of Thermoelectric Generator Applications in Waste Heat Recovery

Bhuiyan

Mamur

Üstüner

et al. 2022

Gazi University Journal of Science

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“…Thermoelectric generators are used in a broad range of applications, such as micropower generation (Aravind et al, 2020), wearable sensors (Lund et al, 2020), automotive waste heat recovery (Patel & Patel, 2020;, wireless sensor network (Yuan et al, 2020;Lineykin et al, 2020), space power (Wang et al, 2020) and buildings (AlMusleh et al, 2020). TEGs are also used as coolers in different devices (Cai et al, 2019), such as refrigerators and air conditioners (Rostamzadeh & Nourani, 2019;Khanmohammadi et al, 2020), as well as for unique industrial application and usage in medicine, aerospace, and military and biological weapons (Mirzakhanyan, 2005;Aljaghtham & Celik, 2020).…”

Section: Application Of Thermoelectric Generatormentioning

confidence: 99%

Evaluation of a PV-TEG Hybrid System Configuration for an Improved Energy Output: A Review

Saleh

Johar

Jumaat

et al. 2021

Int. J. Renew. Energy Dev.

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The development of renewable energy, especially solar, is essential for meeting future energy demands. The use of a wide range of the solar spectrum through the solar cells will increase electricity generation and thereby improve energy supply. However, solar photovoltaics (PV) can only convert a portion of the spectrum into electricity. Excess solar radiation is wasted by heat, which decreases solar PV cells’ efficiency and decreases their life span. Interestingly, thermoelectric generators (TEGs) are bidirectional devices that act as heat engines, converting the excess heat into electrical energy through thermoelectric effects through when integrated with a PV. These generators also enhance device efficiency and reduce the amount of heat that solar cells dissipate. Several experiments have been carried out to improve the hybrid PV-TEG system efficiency, and some are still underway. In the present study, the photovoltaic and thermoelectric theories are reviewed. Furthermore, different hybrid system integration methods and experimental and numerical investigations in improving the efficiency of PV-TEG hybrid systems are also discussed. This paper also assesses the effect of critical parameters of PV-TEG performance and highlights possible future research topics to enhancing the literature on photovoltaic-thermoelectric generator systems.

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Design optimization of oil pan thermoelectric generator to recover waste heat from internal combustion engines

Cited by 55 publications

References 40 publications

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

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

Current and Future Trend Opportunities of Thermoelectric Generator Applications in Waste Heat Recovery

Evaluation of a PV-TEG Hybrid System Configuration for an Improved Energy Output: A Review

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