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Coatings 2018, 8(1), 45; https://doi.org/10.3390/coatings8010045

Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application

1
Agricultural Mechanical Engineering Research and Design Institute, Hubei University of Technology, Wuhan 430068, China
2
School of Automation, Wuhan University of Technology, Wuhan 430070, China
3
School of Automobile Engineering, Wuhan University of Technology, Wuhan 430070, China
*
Author to whom correspondence should be addressed.
Received: 4 December 2017 / Revised: 16 January 2018 / Accepted: 17 January 2018 / Published: 22 January 2018
(This article belongs to the Special Issue Novel Thin Film Materials for Thermoelectric Applications)
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Abstract

To analyze the thermoelectric power generation for sports utility vehicle (SUV) application, a novel thermoelectric generator (TEG) based on low-temperature Bi2Te3 thermoelectric modules (TEMs) and a chaos-shaped brass heat exchanger is constructed. The temperature distribution of the TEG is analyzed based on an experimental setup, and the temperature uniformity optimization method is performed by chipping peak off and filling valley is taken to validate the improved output power. An automobile exhaust thermoelectric generator (AETEG) using four TEGs connected thermally in parallel and electrically in series is assembled into a prototype military SUV, its temperature distribution, output voltage, output power, system efficiency, inner resistance, and backpressure is analyzed, and several important influencing factors such as vehicle speed, clamping pressure, engine coolant flow rate, and ambient temperature on its output performance are tested. Experimental results demonstrate that higher vehicle speed, larger clamping pressure, faster engine coolant flow rate and lower ambient temperature can enhance the overall output performance, but the ambient temperature and coolant flow rate are less significant. The maximum output power of AETEG is 646.26 W, the corresponding conversion efficiency is 1.03%, and the increased backpressure changes from 1681 Pa to 1807 Pa when the highest vehicle speed is 125 km/h. View Full-Text
Keywords: thermoelectric generator; thermoelectric modules; sports utility vehicle; output performance; influence factors thermoelectric generator; thermoelectric modules; sports utility vehicle; output performance; influence factors
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Quan, R.; Liu, G.; Wang, C.; Zhou, W.; Huang, L.; Deng, Y. Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application. Coatings 2018, 8, 45.

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