Design and characterization of a novel finned tubular thermoelectric generator for waste heat recovery

Zoui, Mohamed Amine; Bentouba, Saïd; Velauthapillai, Dhayalan; Zioui, Nadjet; Bourouis, Mahmoud

doi:10.1016/j.energy.2022.124083

Cited by 20 publications

(8 citation statements)

References 29 publications

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“…Each module is made up of several pairs of semiconductor materials that convert a part of the heat that passes through them directly into electrical energy [73]. Figure 4 shows a TEG module type used in [74]. Thermoelectric generator modules (TEGs) are often used to recover some of the thermal energy lost from a source.…”

Section: Thermoelectric Generator Module (Teg)mentioning

confidence: 99%

“…Research has been carried out into the use of TEGs in the automotive industry in particular, specifically for the purpose of enhancing energy efficiency and decreasing emissions. Investigations such as [2] and [74], propose TEGs for installation onto the exhaust system of an internal combustion engine vehicle. Another study [75] suggests installing TEGs on both the exhaust and the motor of an internal combustion engine vehicle.…”

Section: Thermoelectric Generator Module (Teg)mentioning

confidence: 99%

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Overview of the Potential of Energy Harvesting Sources in Electric Vehicles

Bentouba¹,

Zioui²,

Breuhaus³

et al. 2023

Preprint

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The evolution of transportation has been inextricably tied to the progress of civilization. Through innovation, the automobile business has been working to improve safety, quality, and compliance with environmental regulations. Electric vehicles have made significant strides in this area, but optimizing their efficiency requires a special focus because they expend energy that can be recovered in a variety of ways. Energy harvesting, a cutting-edge technology that captures wasted energy from vehicles, has recently received a lot of attention as it constitutes a means to improve the efficiency of electric vehicles. Dissipated energy can be converted into electricity using regenerative energy recovery systems and put to various uses. This study tenders a thorough examination into energy recovery technologies which could be applied to the various types of energy dissipated in electric vehicles. Firstly, the paper investigates the possible sources of energy recoverable from an electric vehicle, as well as the various types of energy dissipated. Secondly, the article examines the energy recovery technologies most frequently used in vehicles, categorizing them according to the type of energy and application. Finally, it determines that with further research and development, energy harvesting holds considerable potential for improving the energy efficiency of electric vehicles. New and innovative methods for capturing and utilizing wasted energy in electric vehicles can be established. The potential benefits of applying energy recovery systems in electric vehicles is a vital issue for the automobile industry to focus on due to the potential benefits involved. The ongoing progress currently being made in this field is expected to play a significant role in shaping the future of transportation.

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Section: Thermoelectric Generator Module (Teg)mentioning

confidence: 99%

Section: Thermoelectric Generator Module (Teg)mentioning

confidence: 99%

Overview of the Potential of Energy Harvesting Sources in Electric Vehicles

Bentouba¹,

Zioui²,

Breuhaus³

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…Zoui et al [28] developed a test bench setup to evaluate the capability of the module to produce electrical power from hot water against forced ambient air. 16 mW output power was produced at 600 mV open-circuit voltage with a temperature difference of 60 °C.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Heat-to-Power Generation Efficiency of Thermoelectric Generators (TEGs) by Harvesting Waste Heat from a Combustion Engine for Energy Storage

Ragupathi

Barik

2023

International Journal of Energy Research

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The present work explores a novel method of waste heat recovery (WHR) from the internal combustion (IC) engine and power generation using heat from hot exhaust gas (HEG) and thermoelectric generator (TEG). This system uses TEGs of aluminium oxide (Al2O3), bismuth telluride (Bi2Te3), lead telluride (PbTe3), and silicon germanium (SiGe) for the investigation of WHR and power generation. The experiments were conducted using a 5.9 kW diesel engine as a source of heat and a heat exchanger (HE) with fins. The parameters such as variation in temperature, rate of heat recovery, rate of power generation, and conversion efficiency of TEGs were analyzed by varying the load on the engine from 0% to 100% with steps of 25% and different zones of the heat exchanger, namely, zone 1, zone 2, zone 3, and zone 4. During the experiment, it was observed that zone 2 gives a high-temperature difference compared to zone 1, zone 3, and zone 4. TEG of bismuth telluride (Bi2Te3) increases the heat recovery rate overall compared to Al2O3, PbTe3, and SiGe throughout the load spectrum and operating conditions concerning different zones. The maximum power generation by TEGs of Al2O3, Bi2Te3, PbTe3, and SiGe was found to be 6.35 W, 7.18 W, 6.41 W, and 5.93 W at zone 2 while the engine was operated at 75% of load, respectively. Bi2Te3 gives the highest conversion efficiency compared to other TEGs irrespective of the working zones. The thermal energy-to-electrical energy conversion efficiency was maximum of about 7.8% given by the TEG of Bi2Te3 at zone 2 while the engine was operated at 75% of the load.

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“…A heat pipe is a multiphase heat transfer device that can be used instead of a heat sink because of its higher thermal performance and lower thermal resistance. 24 As mentioned previously, the heat recovery of a TEG from a flat area has been proposed. However, in practice, heat can be recovered from heat-source surfaces of various shapes and sizes.…”

Section: Introductionmentioning

confidence: 99%

“…A heat sink is a single‐phase heat transfer device suitable for low heat dissipation. A heat pipe is a multiphase heat transfer device that can be used instead of a heat sink because of its higher thermal performance and lower thermal resistance 24 . As mentioned previously, the heat recovery of a TEG from a flat area has been proposed.…”

Section: Introductionmentioning

confidence: 99%

Waste heat recovery from household biomass gasifier stoves (HBGSs) for thermoelectric generators: Effect of the primary air valve angle

Kaewluan,

Wiriyasart

2023

Heat Trans

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Household biomass gasifier stoves (HBGSs) are used in remote areas using natural firewood that is burned in the HBGS for general purposes, such as cooking and warming in winter. The heat dissipation from the walls is assumed to be heat loss. This paper evaluates the electrical performance of thermoelectric generators (TEGs) using heat recovered from the hot walls of an HBGS, considering the effect of three primary air valve angles of 0°, 9°, and 18°. The heat recovered from the HBGS that is electrically transferred through a TEG is assessed. The results showed that the wall heat loss increases with the primary air valve angle of the HBGS. The upper zone near the HBGS gas combustion zone exhibits higher wall temperatures than the middle and lower zones, with a maximum wall temperature of 140°C resulting in an output voltage of 2.55 V. However, the middle and lower zones are also considered as their capacities are consistent with the TEG temperature range. The heat loss from the HBGS is considerably larger than that from other heat sources, and the specific heating area of the heat source is a variable that should be considered to increase the number of TEGs to achieve the desired output values for practical applications. Furthermore, this research serves as a guideline for applying TEGs to recover waste heat from various applications.

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Design and characterization of a novel finned tubular thermoelectric generator for waste heat recovery

Cited by 20 publications

References 29 publications

Overview of the Potential of Energy Harvesting Sources in Electric Vehicles

Overview of the Potential of Energy Harvesting Sources in Electric Vehicles

Investigation on the Heat-to-Power Generation Efficiency of Thermoelectric Generators (TEGs) by Harvesting Waste Heat from a Combustion Engine for Energy Storage

Waste heat recovery from household biomass gasifier stoves (HBGSs) for thermoelectric generators: Effect of the primary air valve angle

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