Enhanced Efficiency of Thermoelectric Generator by Optimizing Mechanical and Electrical Structures

Chen, Jinlong; Li, Kewen; Liu, Changwei; Li, Mao; Lv, Youchang; Lin, Junxin; Jiang, Shanshan

doi:10.3390/en10091329

Cited by 72 publications

(35 citation statements)

References 34 publications

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“…The CSHE had a remarkable impact on the reduction in output power as hA further decreased (at low flow rates and high cross-sectional areas of the water channel) and, consequently, the thermal resistance increased. A similar behavior was observed in Reference [43] when the behavior of a TEG designed for a different purpose (it used hot water instead of exhaust gases as the main heat source) was experimentally studied.…”

Section: Water Heat Sink: Effects Of Changing the Geometry And Flow Ratesupporting

confidence: 79%

Effects of Design Parameters on Fuel Economy and Output Power in an Automotive Thermoelectric Generator

Comamala

Cózar

Massaguer³

et al. 2018

Energies

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The need for more sustainable mobility promoted research into the use of waste heat to reduce emissions and fuel consumption. As such, thermoelectric generation is a promising technique thanks to its robustness and simplicity. Automotive thermoelectric generators (ATEGs) are installed in the tailpipe and convert heat directly into electricity. Previous works on ATEGs mainly focused on extracting the maximum amount of electrical power. However, the back pressure caused by the ATEG heavily influences fuel consumption. Here, an ATEG numerical model was first validated with experimental data and then applied to investigate the effects that modifying the main ATEG design parameters had on both fuel economy and output power. The cooling flow rate and the geometrical dimensions of the heat exchanger on the hot side and the cold side of the ATEG were varied. The design that produced the maximum output power differed from that which maximized fuel economy. Back pressure was the most limiting factor in attaining fuel savings. Back pressure values lower than 5 mbar led to a < 0.2% increase in fuel consumption. In the ATEG design analyzed here, the generation of electrical output power reduced fuel consumption by a maximum of 0.5%.

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Section: Water Heat Sink: Effects Of Changing the Geometry And Flow Ratesupporting

confidence: 79%

Effects of Design Parameters on Fuel Economy and Output Power in an Automotive Thermoelectric Generator

Comamala

Cózar

Massaguer³

et al. 2018

Energies

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show abstract

“…The efficiency of a thermoelectric converter is almost equal to the values given in domestic and foreign literature [16], that is, when the temperature of the cold junction is equal to the ambient temperature T x = 20˚C and hot junction Т г = 1200С η = 6.0%. The temperature of the photoconverter is practically unchanged [17]. When using twenty-fold solar radiation, it rose only 1.10С.…”

Section: Experimental Studymentioning

confidence: 90%

Photo Thermal Generator of Selective Radiation Structural and Energetic Features

Kasimakhunova¹,

Olimov²,

Mamadalieva³

et al. 2019

JAMP

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Photo thermoelectric generators (PTEGs) are solid state heat engines that generate electricity from concentrated sunlight. In this paper, we developed a novel detailed balance model for PTEGs and applied this model to both state-of-the-art and idealized materials. This model uses thermoelectric compatibility theory to provide analytic solutions to device efficiency in idealized materials with temperature-dependent properties. The method for the theoretical calculation of the mechanism of absorption and refraction of light radiation of a selected wavelength in the volume of a photoelectric converter and the design of an effective photo thermal converter with a fixed slit are presented in the article. Direct-and non-direct-electron transitions from the valence band to the conduction band are analyzed. The possibility of optimal distribution of the light spectrum on the frontal surfaces of the solar cell and thermoelectric converter is shown. According to the results of experimental studies, a conclusion was made that the efficiency of a photo converter increases by a factor of three as compared with analogues, but operating without a thermal converter.

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“…These had cover from a various heat source such as solar, vehicle engines or components, air conditioning unit and even body heat [17]. In practice, a set of TEG will be installed together, either in series or in parallel to increase the output [18,19].…”

Section: B Thermoelectric Generator (Teg)mentioning

confidence: 99%

Renewable Energy from Cooking Stove Waste Heat Energy using Thermoelectric Generator for Night Market Application

Wahap*,

Maslan,

Harun

et al. 2019

IJRTE

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Malaysia night market normally operated along a temporarily closed road. No electrical power provided by the authorities and therefore hawkers need to prepare their own. Currently, they are working with gasoline-electric generator. On top of the cost incurred, they also need to consume exhaust gas and noise from the machine. Further, this situation will also affect customers. With a high percentage of the hawkers involve with cooking activities using the LPG gas stove, excess heat is one of the potential energy which can be converted into electrical energy using a thermoelectric generator (TEG). The aim of this study is to convert the excess heat available used to powered night market electrical facilities. A set of experiments was conducted utilizing five units of TEG connected in series to convert excess heat from a butane gas stove to electrical power. The temperature at both the hot and cold sides of the TEG was recorded used to analyze the effect of power produced. Two electrical parameters namely voltage and current outputs were measured used to calculate the electrical power generated. The analysis focused on the two main governing parameters namely temperature different and Seebeck coefficient toward power generated. It was found that only some amount of excess heat was converted which produced up to 46.8 mW electrical power. This is based on the high temperature recorded at the cold side of the TEG. The almost constant trend showed in temperature different was contributed to a small magnitude of the Seebeck coefficient and so for the power generated. The trend showed by the power generated was also almost constant even the temperature on the hot side keep increasing. The energy conversion process was considered success and can be further increased by increasing the number of TEG units used as well as by incorporating a cooling mechanism as practiced by many researchers.

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Enhanced Efficiency of Thermoelectric Generator by Optimizing Mechanical and Electrical Structures

Cited by 72 publications

References 34 publications

Effects of Design Parameters on Fuel Economy and Output Power in an Automotive Thermoelectric Generator

Effects of Design Parameters on Fuel Economy and Output Power in an Automotive Thermoelectric Generator

Photo Thermal Generator of Selective Radiation Structural and Energetic Features

Renewable Energy from Cooking Stove Waste Heat Energy using Thermoelectric Generator for Night Market Application

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