Experimental investigation of thermoelectric heat recovery from a diesel engine

Sandu, Venetia; Stanca, A. C.; Pasaroiu, A.; Dobre, Dan

doi:10.1109/icate.2012.6403406

Cited by 8 publications

(3 citation statements)

References 9 publications

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“…They reported for higher exhaust gas flowrates, thermoelectric power output increases from 2 to 3.8 W while overall system efficiency decreases from 0.95% to 0.6%. Sandu et al [16] conducted an experimental study on heat recovery from the exhaust gas of a diesel engine using thermoelectric generators. Montecucco and Knox [17] proposed a computer model to accurately simulate the thermal and electrical dynamics of a real thermoelectric (TE) power generating system.…”

Section: Introductionmentioning

confidence: 99%

Application of thermoelectric cooler as a power generator in waste heat recovery from a PEM fuel cell – An experimental study

Hasani

Rahbar

2015

International Journal of Hydrogen Energy

120

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Section: Introductionmentioning

confidence: 99%

Application of thermoelectric cooler as a power generator in waste heat recovery from a PEM fuel cell – An experimental study

Hasani

Rahbar

2015

International Journal of Hydrogen Energy

120

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“…The simplest way to extract heat from exhaust gases is using the exhaust pipe as thermoelectric hot side-source and air as the cold fluid, as in Sandu et al 16 The low thermal conductivity of the exhaust gas causes pipe temperature to be lower than desired, and insufficient external heat dissipation leads to cold side heating, the latter being a result of conduction heat transfer through the thermoelectric module. Consequently, the gradient of temperature needed for the TEG to produce a significant electrical output is hard to achieve.…”

Section: Introductionmentioning

confidence: 99%

Effect of the use of a thermoelectric generator on the pumping work of a diesel engine

Ezzitouni

Fernández-Yáñez

Rodríguez

et al. 2019

International Journal of Engine Research

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Approximately a third part of the energy intake of a light-duty diesel engine is wasted through the exhaust system. Rising awareness of environmental issues together with fuel economy has encouraged research upon energy recovery in internal combustion engines. This article focuses on the application of thermoelectric generators in light-duty diesel vehicles. Most studies available in the literature tend to focus on maximizing the recovered electrical power, not always considering the increase in engine pumping work or testing conditions similar to those of a vehicle. The goal of this article is to evaluate the consequences of the modification of the cross-sectional area in the exhaust pipe that adding a thermoelectric generator implies and to compare them with the electrical power produced by the thermoelectric generator. The effect on the indicated and pumping parameters of the engine under common urban driving conditions is presented. From the results, it can be drawn that within the limits of engine speed and torque tested, the modification of the cross-sectional area does not have a significant negative effect on the engine pumping efficiency. This means that there is potential for the employment of this technique in energy recovery from light-duty vehicles.

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“…In particular, Thermo-Electric Generators (TEGs) can generate clean energy in a small space and therefore are being used in an increased number of standalone applications ranging from aerospace [3,4], to industry [5,6,7]. Their possible integration with other energy harvesting technologies was also investigated; for example, for increasing the overall efficiency of photovoltaics [8] by exploiting the thermal gradient between the back of the panels and the ambient temperature, hence recovering the otherwise dissipated heat.…”

Section: Introductionmentioning

confidence: 99%

An Extensive Unified Thermo-Electric Module Characterization Method

Attivissimo

Carducci

Lanzolla

et al. 2016

Sensors

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Thermo-Electric Modules (TEMs) are being increasingly used in power generation as a valid alternative to batteries, providing autonomy to sensor nodes or entire Wireless Sensor Networks, especially for energy harvesting applications. Often, manufacturers provide some essential parameters under determined conditions, like for example, maximum temperature difference between the surfaces of the TEM or for maximum heat absorption, but in many cases, a TEM-based system is operated under the best conditions only for a fraction of the time, thus, when dynamic working conditions occur, the performance estimation of TEMs is crucial to determine their actual efficiency. The focus of this work is on using a novel procedure to estimate the parameters of both the electrical and thermal equivalent model and investigate their relationship with the operating temperature and the temperature gradient. The novelty of the method consists in the use of a simple test configuration to stimulate the modules and simultaneously acquire electrical and thermal data to obtain all parameters in a single test. Two different current profiles are proposed as possible stimuli, which use depends on the available test instrumentation, and relative performance are compared both quantitatively and qualitatively, in terms of standard deviation and estimation uncertainty. Obtained results, besides agreeing with both technical literature and a further estimation method based on module specifications, also provides the designer a detailed description of the module behavior, useful to simulate its performance in different scenarios.

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Experimental investigation of thermoelectric heat recovery from a diesel engine

Cited by 8 publications

References 9 publications

Application of thermoelectric cooler as a power generator in waste heat recovery from a PEM fuel cell – An experimental study

Application of thermoelectric cooler as a power generator in waste heat recovery from a PEM fuel cell – An experimental study

Effect of the use of a thermoelectric generator on the pumping work of a diesel engine

An Extensive Unified Thermo-Electric Module Characterization Method

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