Comparison and parametric study of two theoretical modeling approaches based on an air-to-water thermoelectric generator system

Luo, Ding; Wang, Ruochen; Yu, Wei

doi:10.1016/j.jpowsour.2019.227069

Cited by 50 publications

(12 citation statements)

References 37 publications

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“…In addition to the CFD analysis, the following equations are used for Thermal-Electric analysis [7]. Energy conservation equations used for P and N-type semiconductor legs in Thermal-Electric analysis are given in Eq.…”

Section: A Mathematical Modelmentioning

confidence: 99%

“…These properties are selected as temperature-dependent to obtain more accurate results. The material properties of the 2 3 -based TE module were taken from the study of Luo et al [7].…”

Section: Grid Structure and Materials Propertiesmentioning

confidence: 99%

“…Moreover, the four heat sink models at 1.4 m/s and 3 m/s air velocity performed significantly well compared to the plate-fin on TEG power generation. Luo et al [7] researched the performance of the TEG system integrated with air and water by using the thermal resistance and numerical model. They concluded that the thermal resistance model gave acceptable results under appropriate conditions but numerical modeling could be used for more accurate results.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation of the Effect of Cooling and Heating Conditions on the Performance of Thermoelectric Module

ÖZBEKTAŞ

Sungur

Topaloğlu

2021

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Today, the need for energy increases, and fossil fuel resources run out rapidly so energy costs also increase rapidly. The most important feature of fossil fuels is that they consist of hydrocarbon and organic substances containing high levels of carbon. This causes great harm to the world and humanity. In the face of this dangerous situation, world states look for new and clean energy sources. As a result, the trend towards renewable energy sources increases rapidly. In this context, TE (thermoelectric) module is an important source to convert heat to electrical energy. The amount of electricity generation from heat depends on the temperature difference between surfaces of the TE module. The electrical power obtained from heat increases with the increase of temperature difference. This work aims to investigate numerically the heat transfer and electricity generation performance of a 2 3 -based TE module embedded with cylindrical pin-fin heat sink under the different hot surface and air temperature conditions with different air velocities. The results were evaluated and discussed with parameters such as temperature distribution, power input, power output, voltage output, current output, temperature difference, total thermal resistance, conversion efficiency and Nusselt number according to Reynolds numbers. In all analyses, it was observed that performance of the heat transfer and electricity generation of the TE module increase with the increase in Reynolds number. The highest conversion efficiency was obtained generally at surface temperatures of 200℃, specifically at air temperature of 5℃ and the Reynolds number of 20000. In addition, it was observed that the temperature difference between the surfaces of the TE module is not sufficient alone to give good performance and besides, it is necessary to keep the cold surface at low temperature.

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Section: A Mathematical Modelmentioning

confidence: 99%

“…These properties are selected as temperature-dependent to obtain more accurate results. The material properties of the 2 3 -based TE module were taken from the study of Luo et al [7].…”

Section: Grid Structure and Materials Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation of the Effect of Cooling and Heating Conditions on the Performance of Thermoelectric Module

ÖZBEKTAŞ

Sungur

Topaloğlu

2021

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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“…Additionally, TE couples with different TE materials may have different optimum S p / S n values, and four typical materials (Figure S2) are selected for simulation, including BiTe‐based 29 alloys ( T h = 500 K, T c = 300 K), p‐type 30 and n‐type 31 PbTe‐based alloys ( T h = 700 K, T c = 350 K), p‐type 32 and n‐type 33 SiGe‐based alloys ( T h = 1000 K, T c = 500 K), p‐type NbFeSb‐based half‐Heusler alloys, 34 and n‐type CoSb‐based half‐Heusler alloys 35 ( T h = 1000 K, T c = 500 K). Here, the representative data of the Seebeck coefficient, electrical resistivity, and thermal conductivity are selected from the above literature, and these data are obtained by a polynomial fitting method 40,41 . Among these references, some studies only refer to one kind of material; other studies refer to various materials due to the difference in doping concentration and elements, and the better one was adopted in this research.…”

Section: Structural Optimization and Performance Investigation For Thmentioning

confidence: 99%

“…However, manufacturers do not provide a single TE couple but the entire TE modules. Consequently, a commercial Bi 2 Te 3 ‐based TEG1‐127‐1.4‐1.6 TE module 41 (length × width × height: 40 × 40 × 3.8 mm 3 ) was used in the actual test, and its detailed parameters are shown in Table 2. The TE module test bench was designed to measure its outputs at the specific boundary conditions, as illustrated in Figure 7C.…”

Section: Experimental Validation Based On a Commercial Bi2te3‐based Tmentioning

confidence: 99%

Parametric study of asymmetric thermoelectric devices for power generation

Luo

Wang

et al. 2020

Int J Energy Res

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Summary Thermoelectric devices are considered a promising technique for recycling waste heat. In the present work, a three‐dimensional numerical model is developed to study the output performance of thermoelectric devices. A comprehensive analysis is performed based on a conventional π‐type thermoelectric couple. The results indicate that the maximum power of thermoelectric devices generally increases with a decrease in height and an increase in cross‐sectional area; the maximum efficiency exhibits the opposite trends. The best way to reduce heat losses is by using ceramic plates with higher thermal conductivity. Moreover, the parasitic internal resistance exists in the thermoelements, and its influencing factors are studied. To minimize electric losses, an asymmetric structure is proposed for thermoelectric devices. The results exhibit that the optimal cross‐sectional area ratio of the p‐type and n‐type legs (Sp/Sn) is mainly contingent upon the thermoelectric material parameters; the greater the differences in the parameters of p‐type and n‐type thermoelectric materials, the greater the gains provided by the asymmetric structure. Furthermore, the experimental data present great consistency with the numerical results. The research results may help guide the design of thermoelectric devices with relatively lower power losses.

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Experimental and Thermal Analysis of Solar Thermoelectric System Performance Incorporated with Solar Tracker

Atalay

Yakut

Köysal

et al. 2021

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Comparison and parametric study of two theoretical modeling approaches based on an air-to-water thermoelectric generator system

Cited by 50 publications

References 37 publications

Numerical Investigation of the Effect of Cooling and Heating Conditions on the Performance of Thermoelectric Module

Numerical Investigation of the Effect of Cooling and Heating Conditions on the Performance of Thermoelectric Module

Parametric study of asymmetric thermoelectric devices for power generation

Experimental and Thermal Analysis of Solar Thermoelectric System Performance Incorporated with Solar Tracker

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