SIMULATION STUDY OF CYLINDRICAL AUTOMOBILE EXHAUST THERMOELECTRIC GENERATOR SYSTEM

The output performance of Automobile Exhaust Thermoelectric Generator (AETEG) is related to the temperature difference and electric connection topology of thermoelectric modules, in order to decrease the ring current among the thermoelectric modules in parallel with different temperature difference and enhance the output performance, a novel heat exchanger using in AETEG is designed in this paper. The interior structure of heat exchanger with fishbone is analysed, then its surface temperature distribution is simulated with ANSYS software and experimented with thermal imaging instrument. Both of the results show that the surface temperature distribution of the fishbone heat exchanger designed in this paper is more uniform in lateral direction and dispalys an obvious gradient in fore-and-aft surface, compared with the one of cavity designed before, the novel heat exchanger has overwhelming advantage in the output performance of AETEG, and the method adopted in this paper is feasible and practical.

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Performance investigation of a thermoelectric generator system applied in automobile exhaust waste heat recovery

Energy ◽

10.1016/j.energy.2021.121816 ◽

2022 ◽

Vol 238 ◽

pp. 121816

Author(s):

Ding Luo ◽

Zeyu Sun ◽

Ruochen Wang

Keyword(s):

Heat Recovery ◽

Waste Heat Recovery ◽

Thermoelectric Generator ◽

Waste Heat ◽

Generator System ◽

Automobile Exhaust ◽

Exhaust Waste Heat

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Study on the Automobile Exhaust Thermoelectric Generator Test Bench

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.668.514 ◽

2013 ◽

Vol 668 ◽

pp. 514-517

Author(s):

Rui Quan ◽

Xin Feng Tang ◽

Shu Hai Quan

Keyword(s):

Control System ◽

Fuel Economy ◽

Thermoelectric Generator ◽

Test Bench ◽

Combustion Engine ◽

Initial Experiment ◽

Automobile Exhaust ◽

Output Performance ◽

Exhaust Heat ◽

Automobile Exhaust Thermoelectric Generator

In order to utilize the exhaust heat of internal combustion engine effectively and enhance its fuel economy, a test bench used in Automobile Exhaust Thermoelectric Generator (AETEG) is designed in this paper, the main controller, temperature monitoring unit and single voltage monitoring unit of the control system are elaborated. Finally, several initial experiment results are provided, it reveals that prolonging the exhaust’s transmission time and path appropriately can help raise the temperature of heat exchanger’s surface and enhance the output performance of AETEG, the method adopted in this paper is feasible and the AETEG test bench designed is practical.

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The Effects of Backpressure on the Performance of Internal Combustion Engine and Automobile Exhaust Thermoelectric Generator

Journal of Energy Resources Technology ◽

10.1115/1.4053546 ◽

2022 ◽

pp. 1-27

Author(s):

Rui Quan ◽

Yousheng Yue ◽

Zikang Huang ◽

Yufang Chang ◽

Yadong Deng

Keyword(s):

Heat Exchanger ◽

Pressure Drop ◽

Internal Combustion Engine ◽

Thermoelectric Generator ◽

Engine Speed ◽

Combustion Engine ◽

Internal Combustion ◽

Automobile Exhaust ◽

Automobile Exhaust Thermoelectric Generator ◽

Co Emission

Abstract The maximum generated power of automobile exhaust thermoelectric generator (AETEG) can be enhanced by applying inserted fins to its heat exchanger, for the temperature difference of thermoelectric modules (TEMs) is increased. However, the heat exchanger will result in undesired backpressure, which may deteriorate the performance of the internal combustion engine (ICE). To evaluate the backpressure on the performance of both the ICE and the AETEG, the model of ICE integrated with AETEG was established with the GT-power software and validated with the AETEG test bench. The heat exchangers with chaos shape and fishbone shape were proposed, their pressure drop with different engine speeds was studied, and their effects on the performance of both the AETEG and the ICE were analyzed. The results showed that compared with the fishbone-shaped structure, the pressure drop of chaos-shaped heat exchanger is larger at the same engine speed, which contributes to the increased maximum power and hot side temperature of the AETEG. Moreover, compared with the ICE without heat exchanger, the brake torque, brake power, volumetric efficiency and pumping mean effective pressure of the ICE assembled with chaos-shape and fishbone-shape heat exchanger reduce, and the corresponding brake specific fuel consumption, CO emission and CO2 emission increase because of the raised backpressure caused by the heat exchanger.

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