Experiments and simulations on heat exchangers in thermoelectric generator for automotive application

Liu, X.; Deng, Yadong; Zhang, K.; Xu, Meng; Xu, Yabo; Su, Chuqi

doi:10.1016/j.applthermaleng.2014.07.022

Cited by 119 publications

(36 citation statements)

References 15 publications

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“…The relevant parameters of the principal components of the experimental setup are listed in Table 1. For the Furthermore, to guarantee uniform temperature distribution and improve the heat transfer performance, a chaos-shaped heat exchanger [27] is adopted, and its effective heat transfer size is 400 mm in length and 300 mm in width. For each cooling unit above one surface of the heat exchanger, six single-row cooling boxes are connected in series for the sake of convenient assembly.…”

Section: Teg Architecturementioning

confidence: 99%

Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application

et al. 2018

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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 Bi 2 Te 3 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.

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Section: Teg Architecturementioning

confidence: 99%

Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application

et al. 2018

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“…Different interior flow cavities of heat exchangers, different surface temperature distribution and performance of TEMs. There are a series of dummy plates at both sides of the heat exchanger's interior cavity, here called the herring-bone structure [5]. The effective heat conduction length is 400 mm, the effective width is 280 mm, the exterior height is 18 mm, the interior thickness is 2 mm, and it is made of brass.…”

Section: Automobile Exhaust Thermoelectric Hybrid Powermentioning

confidence: 99%

Energy Management of Automobile Exhaust Thermoelectric Hybrid Power Based on Maximum Power Point Tracking and Fuzzy Logic Control

Quan¹,

Liu²,

Zhou³

et al. 2018

Proceedings of the 2nd International Forum on Management, Education and Information Technology Application (IFMEITA 2017)

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Abstract.To enhance the output performance of automobile exhaust thermoelectric hybrid power, all the components such as engine, automobile exhaust thermoelectric generator (AETEG), DC/DC converter and batteries were modelled with ADVISOR, the maximum power point tracking (MPPT) method of AETEG combining perturb & observe (P&O) algorithm, quadratic interpolation and constant voltage tracking method was put forward in the power output process of AETEG, and the energy management was optimized with fuzzy logic control according to the state of charge (SOC) of batteries and external load power requirements. The simulated results demonstrate that the output power of automobile exhaust thermoelectric hybrid power well meets the requirements of external load consumed power during the urban dynamo driving schedule (UDDS), the SOC of batteries remains steady between 0.5 and 0.7, and the maximum exhaust waste heat recovery efficiency of AETEG is about 1.3%, validating the proposed energy management strategy as both feasible and efficient.

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“…Liu et al [25,26] performed an experimental study on different structural designs for the heat exchanger aimed at improving the efficiency of a TEG system for which a maximum power output of 944 W was obtained in the revolving drum test under real working conditions. Wang et al [27] and Su et al [28] performed a series of experimental tests on a thermoelectric generator system based on a new type of open-cell metal foam-filled plate heat exchanger, achieving a heat exchange efficiency between heated air and cold water of 83.56%.…”

Section: Improvements At the Teg System Levelmentioning

confidence: 99%

A Novel Design of Thermoelectric Generator for Automotive Waste Heat Recovery

Huang

Yan

et al. 2018

Automot. Innov.

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With progressively stringent fuel consumption regulations, many researchers and engineers are focusing on the employment of waste heat recovery technologies for automotive applications. Regarded as a promising method of waste heat recovery, the thermoelectric generator (TEG) has been given increasing attention over the whole automotive industry for the last decade. In this study, we first give a brief review of improvements in thermoelectric materials and heat exchangers for TEG systems. We then present a novel design for a concentric cylindrical TEG system that addresses the existing weaknesses of the heat exchanger. In place of the typical square-shaped thermoelectric module, our proposed concentric cylindrical TEG system uses an annular thermoelectric module and employs the advantages of the heat pipe to enhance the heat transfer in the radial direction. The simulations we carried out to verify the performance of the proposed system showed better power output among the existing TEG system, and a comparison of water-inside and gas-inside arrangements showed that the water-inside concentric cylindrical TEG system produced a higher power output.

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Experiments and simulations on heat exchangers in thermoelectric generator for automotive application

Cited by 119 publications

References 15 publications

Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application

Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application

Energy Management of Automobile Exhaust Thermoelectric Hybrid Power Based on Maximum Power Point Tracking and Fuzzy Logic Control

A Novel Design of Thermoelectric Generator for Automotive Waste Heat Recovery

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