Thermoelectric Power Generation System Using Waste Heat from Biomass Drying

Maneewan, Somchai; Chindaruksa, Sirinuch

doi:10.1007/s11664-009-0820-5

Cited by 38 publications

(18 citation statements)

References 7 publications

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“…In order to validate the proposed TEG model, some parameters and operating conditions were selected. According to the results presented by Maneewan and Chindaruksa (13) , the thermoelectric module TEC1-12708 was chosen as the geometry of the TEG in this study, as shown in Table 1. Table 1 Parameters of the base case Parameters of the thermoelectric module (TEC1-12708) (13) Operating conditions…”

Section: Numerical Methods and Validationmentioning

confidence: 99%

“…TEGs have received a lot of attention due to their high reliability, lack of moving parts, and environmental friendliness (11,12) . Maneewan and Chindaruksa (13) studied the performance of commercial thermoelectric modules using waste heat from a biomass dryer. The results showed that thermoelectric cooling modules have potential to be used as a TEG with waste heat from a biomass dryer with a wall temperature of 180 °C to 200 °C.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Irreversibilities on the Performance of Thermoelectric Generator Investigated Using Exergy Analysis

Wang

Hung

2013

JTST

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For a practical thermoelectric generator (TEG) system, the performance is affected by many irreversible processes. This study evaluates the effects of multi-irreversibilities on TEG performance using exergy analysis. Based on the exergy analysis, two performance indexes, the energy efficiency and exergy efficiency, are used. A finite element scheme is employed to model the TEG system. The heat loss from the TEG to the environment and temperature-dependent material properties are considered. The results suggest that when the application of the small electrical current is considered, decreasing the hot-reservoir temperature or increasing the cold-reservoir temperature can improve the TEG exergy efficiency. Although heat loss slightly decreases the maximum energy and exergy efficiency, it can improve energy and exergy efficiencies for a case with large electrical current. On the other hand, when the Seebeck coefficient or thermal conductivity is temperature-dependent, both the maximum energy efficiency and exergy efficiency increase with increasing hot-reservoir temperature. However, the temperature-dependence of the electrical resistivity reduces the maximum exergy efficiency when the hot-reservoir temperature increases even though the maximum energy efficiency is increased.

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Section: Numerical Methods and Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Irreversibilities on the Performance of Thermoelectric Generator Investigated Using Exergy Analysis

Wang

Hung

2013

JTST

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“…Maneewan and Chindaruksa [20] constructed a TEG system for recovery of waste heat from biomass dryer. Twelve thermoelectric modules of TEC1-12708 were used in this system.…”

Section: Introductionmentioning

confidence: 99%

The Potential of Thermoelectric Generator for Engine Exhaust Heat Recovery Applications

Sugiartha¹,

Negara²

2018

GEOMATE

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ABSTRACT:In this study, a thermoelectric generation (TEG) unit was designed and constructed to evaluate the technical potential of exhaust heat recovery system for automobile applications. The TEG system was made up of a commercial thermoelectric module of TEC1 12706 model, an aluminum duct, an aluminum fin heat sink, an electric heater, a cooling fan, AC and DC power supply, an external resistive load and data collection devices. The heater was used as an exhaust heat source simulator to supply heat energy to the hot side of the TEG module. The cooling fan was used for simulating airflow and maintaining uniform heat rejection from the heat sink to the ambient. The experimental investigation had been conducted to characterize the TEG's performance. The tests were undertaken based on the measurements of temperature at both hot and cold sides of the TEG module, open circuit voltage, and output voltage and current under various external resistive loads. The test results showed that the highest temperature difference was 40.1 o C. This revealed a peak output power of 178.2 mW, a load voltage of 1156.3 mV, a load current of 220 mA and a conversion efficiency of 0.204%. The thermoelectric generation from waste heat energy of a simulated automobile exhaust is technically feasible, though the output power and the conversion efficiency of the TEG unit seem low. In general, it is found that the temperature difference between the hot and cold sides of the thermoelectric module has the most significant impact on the TEG's performance.

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“…The two-stage structure not only enhanced the light-gathering efficiency but also confined the air convection intensity in the tube. A device integrating traditional rooftop solar isolation material and thermoelectric power generator improved by Maneewan et al [19,20] was applied to reduce indoor temperature in Thailand. Fans powered by a thermoelectric module were used to cool the cold end of the thermoelectric module.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Non-Uniform High Heat Flux on Thermal Stress of Thermoelectric Power Generator

et al. 2015

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Abstract:A thermoelectric generator (TEG) device which uses solar energy as heat source would achieve higher efficiency if there is a higher temperature difference between the hot-cold ends. However, higher temperature or higher heat flux being imposed upon the hot end will cause strong thermal stress, which will have a negative influence on the life cycle of the thermoelectric module. Meanwhile, in order to get high heat flux, a Fresnel lens is required to concentrate solar energy, which will cause non-uniformity of heat flux on the hot end of the TEG and further influence the thermal stress of the device. This phenomenon is very common in solar TEG devices but seldom research work has been reported. In this paper, numerical analysis on the heat transfer and thermal stress performance of a TEG module has been performed considering the variation on the power of the heat flux being imposed upon the hot-end; the influence of non-uniform high heat flux on thermal stress has also been analyzed. It is found that non-uniformity of high heat flux being imposed upon the hot end has a significant effect on the thermal stress of TEG and life expectation of the device. Taking the uniformity of 100% as standard, when the heating uniformity is 70%, 50%, 30%, and 10%, respectively, the maximum thermal stress of TEG module increased by 3%, 6%, 12%, and 22% respectively. If we increase the heat flux on the hot end, the influence of non-uniformity on the thermal stress will be more remarkable.

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Thermoelectric Power Generation System Using Waste Heat from Biomass Drying

Cited by 38 publications

References 7 publications

Effect of Irreversibilities on the Performance of Thermoelectric Generator Investigated Using Exergy Analysis

Effect of Irreversibilities on the Performance of Thermoelectric Generator Investigated Using Exergy Analysis

The Potential of Thermoelectric Generator for Engine Exhaust Heat Recovery Applications

The Influence of Non-Uniform High Heat Flux on Thermal Stress of Thermoelectric Power Generator

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