Effect of structure parameters on the performance of an annular thermoelectric generator for automobile exhaust heat recovery

Shen, Zu-Guo; Huang, Bin; Liu, Xun

doi:10.1016/j.enconman.2022.115381

Cited by 28 publications

(5 citation statements)

References 46 publications

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“…In the heat exchanger design for AETEG, the most important criteria is to have a high heat transfer with minimum pressure drop. To trade-off between these two quantities, a thermal hydraulic performance coefficient (THPC) is defined as [23]:…”

Section: Thermal Hydraulic Performance Coefficientmentioning

confidence: 99%

WITHDRAWN: Numerical Study on the Performance Evaluation and Thermal Management of Automotive Exhaust Thermoelectric Generator using Pin fins

Veer

2024

Preprint

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The utilization of thermoelectric power generators presents a viable prospect for the recuperation of waste heat that results from exhaust gases within the automotive sector. The optimal performance of thermoelectric modules in waste heat recovery applications is heavily dependent on the design of the heat exchanger. The current study employs numerical methods to examine the efficacy of pin-fin configurations on the hot-side heat exchanger surface in enhancing heat transfer and thereby improving the conversion efficiency of TEG. Specifically, the study explores the impact of inline, staggered, and progressive arrangements of pin-fins in the direction of the exhaust stream. The heat exchanger is subjected to variations in fin thickness ranging from 10 mm to 18 mm to improve heat transfer in each configuration. The study conducts simulations on every fin configuration, utilizing three distinct inlet velocities (4 m/s, 6 m/s, and 8 m/s) and five different inlet temperatures (423 K, 473 K, 523 K, 573 K, and 623 K). The assessment of the heat exchanger’s performance is conducted by means of the thermalhydraulic performance coefficient (THPC) and the temperature uniformity index. Meanwhile, the evaluation of the TEG device’s performance is carried out by estimating its rated power output and the conversion efficiency of TEG. According to the findings, the staggered fin arrangement exhibits the highest Thermal Hydraulic Performance Coefficient (THPC) and power generation capability, while the progressive and inline fin configurations follow in descending order. The utilization of fins with a thickness of 18 mm in a staggered arrangement yields a peak rated power output of 53.42 W. The implementation of pin fins in a staggered configuration within the heat exchanger amplifies the heat transfer from the exhaust gas to the thermoelectric module. Consequently, there is an increase in the output power with respect to the given temperature difference.

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Section: Thermal Hydraulic Performance Coefficientmentioning

confidence: 99%

WITHDRAWN: Numerical Study on the Performance Evaluation and Thermal Management of Automotive Exhaust Thermoelectric Generator using Pin fins

Veer

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The study revealed that, under identical input parameters, the rectangular heat exchanger yielded a higher average temperature on its hot surface compared to the hexagonal heat exchanger. Shen et al [23] conducted a numerical investigation on an annular heat exchanger to examine the impact of cylinder diameter and length on power output and power density. The maximum power output of 122 W was reported by the author, in relation to a cylinder diameter of 0.1 m and length of 0.9 m. Luo et al [24] proposed a rectangular heat exchanger of the converging type.…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Numerical Study on the Performance Evaluation and Thermal Management of Automotive Exhaust Thermoelectric Generator using Pin fins

Veer,

Kansara,

Singh

2023

Preprint

View full text Add to dashboard Cite

The utilization of thermoelectric power generators presents a viable prospect for the recuperation of waste heat that results from exhaust gases within the automotive sector. The optimal performance of thermoelectric modules in waste heat recovery applications is heavily dependent on the design of the heat exchanger. The current study employs numerical methods to examine the efficacy of pin-fin configurations on the hot-side heat exchanger surface in enhancing heat transfer and thereby improving the conversion efficiency of TEG. Specifically, the study explores the impact of inline, staggered, and progressive arrangements of pin-fins in the direction of the exhaust stream. The heat exchanger is subjected to variations in fin thickness ranging from 10 mm to 18 mm to improve heat transfer in each configuration. The study conducts simulations on every fin configuration, utilizing three distinct inlet velocities (4 m/s, 6 m/s, and 8 m/s) and five different inlet temperatures (423 K, 473 K, 523 K, 573 K, and 623 K). The assessment of the heat exchanger’s performance is conducted by means of the thermal-hydraulic performance coefficient (THPC) and the temperature uniformity index. Meanwhile, the evaluation of the TEG device’s performance is carried out by estimating its rated power output and the conversion efficiency of TEG. According to the findings, the staggered fin arrangement exhibits the highest Thermal Hydraulic Performance Coefficient (THPC) and power generation capability, while the progressive and inline fin configurations follow in descending order. The utilization of fins with a thickness of 18 mm in a staggered arrangement yields a peak rated power output of 53.42 W. The implementation of pin fins in a staggered configuration within the heat exchanger amplifies the heat transfer from the exhaust gas to the thermoelectric module. Consequently, there is an increase in the output power with respect to the given temperature difference.

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“…The finite element method included temperature and a temperature-dependent attribute. [6] A standard thin-film thermoelectric cooler (TEC) loses functionality when a series-connected thermoelement breaks. We developed a thin-film thermoelectric cooler (TEC) with a parallel electrical connection of two thermoelements and a series electrical connection of two more to overcome this constraint.…”

Section: Literature Reviewmentioning

confidence: 99%

Automobile’s Exhaust Conversion into Energy and into Cool Air to be Utilized as an Alternative Source of Energy at Home and for Car Air-Conditioning

Bajaro,

Tayactac

2024

Advances in Science and Technology

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This article includes a car-use thermoelectric cooler and a generator driven by exhaust heat. Due to space constraints, automotive air conditioning systems are driver-oriented. The researcher invented a thermoelectric air conditioner that cools the back seat roof. The cooler is quiet and easy to assemble. The cooler was powered by an exhaust-pipe-mounted thermoelectric generator. The thermoelectric generator and cooler were incorporated into a storage device to provide continuous power to the cooler. A DC-DC Converter lets us store exhaust pipe heat energy and use it to cut household energy demand. This saves electricity and is eco-friendly. This study will design a thermoelectric system to improve automotive systems and reduce the environmental impact of vehicle waste heat, which can contribute to global warming.

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Effect of structure parameters on the performance of an annular thermoelectric generator for automobile exhaust heat recovery

Cited by 28 publications

References 46 publications

WITHDRAWN: Numerical Study on the Performance Evaluation and Thermal Management of Automotive Exhaust Thermoelectric Generator using Pin fins

WITHDRAWN: Numerical Study on the Performance Evaluation and Thermal Management of Automotive Exhaust Thermoelectric Generator using Pin fins

WITHDRAWN: Numerical Study on the Performance Evaluation and Thermal Management of Automotive Exhaust Thermoelectric Generator using Pin fins

Automobile’s Exhaust Conversion into Energy and into Cool Air to be Utilized as an Alternative Source of Energy at Home and for Car Air-Conditioning

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