Performance assessment of a thermoelectric generator applied to exhaust waste heat recovery

Demir, Murat Emre; Dinçer, İbrahim

doi:10.1016/j.applthermaleng.2017.03.052

Cited by 105 publications

(29 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the experimental results of temperature uniformity distribution, it can be concluded that enhancing its uniformity with the temperature optimized method of chipping peak off and filling valley can increase the maximum power to some extent even though larger engine power is needed. Based on the low-temperature Bi 2 Te 3 TEMs and optimized TEG, a novel AETEG called "four-TEGs" system was assembled under the chassis of a prototype military SUV, the influence of several factors such as vehicle speed, clamping pressure, engine coolant flow rate and ambient temperature on its output performance is experimented and compared. The road test results on highways demonstrate that SUV speed and clamping pressure mainly influence the output voltage and power.…”

Section: Discussionmentioning

confidence: 99%

“…Owing to several advantages such as having little vibration, being highly reliable and durable, and having no moving parts, there have been considerable emphases on the development of thermoelectric modules (TEMs) for a variety of photovoltaic, automotive, military and aerospace applications over the past years [1][2][3][4]. With the rapid development of economy and society, automobiles have become a necessity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application

et al. 2018

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The impact of the operating temperature on the thermoelectric properties of the selected materials is also investigated in this case study for a better understanding of the system. The following are the key results of this case study: The WHR system can produce up to 160 W of electricity from exhaust heat The system has overall energy and exergy efficiencies around 0.6% and 0.9%, respectively. The thermoelectric performance of GdCo 0.95 Ni 0.05 O 3 is better than La 1.98 Sr 0.02 CuO 4 . The system has power densities up to 109 W/m 2 . …”

Section: Case Studiesmentioning

confidence: 88%

Better thermal management options with heat storage systems for various applications: An Evaluation

Acar

Dinçer

2019

Energy Storage

Self Cite

View full text Add to dashboard Cite

With increasing worldwide population and rising standards of living, the global energy consumption is increasing at significant rates. Together with climate change concerns and negative impacts of fossil fuel use, the need for clean and smart energy systems is becoming more obvious. Clean and smart systems provide energy to all types of end‐use applications in an environmentally friendly, affordable, reliable, and efficient manner. Heat losses are recognized as some of the most significant causes of efficiency degradation in energy systems. Therefore, this study overviews and investigates current and future thermal management options for different end‐use purposes for a more sustainable future. In this study, a smart approach is taken when evaluating existing and emerging thermal management systems and smart targets are introduced for better thermal management systems. In addition, some novel thermal management systems for various applications such as electric/hybrid vehicles, power systems, and industrial processes are introduced as case studies and the energy and exergy efficiencies of these case studies are compared. In addition, some key future directions are provided in terms of better thermal management options for a sustainable future. The case study results of this study show that with better thermal management strategies, it is possible to reach energy and exergy efficiencies up to 60% and 50%, respectively in hybrid vehicles, industrial processes, and robotic applications.

show abstract

“…Heat recovery technologies have attracted increasing attention around the world due to the increase in fuel prices, rigorous emission regulations, and concerns about environmental problems associated with the use of existing energy systems [1,2]. A number of waste heat recovery technologies have been proposed, such as organic Rankine cycles (ORCs) [3,4], Rankine cycles [5], absorption/adsorption cycles [6], Kalina cycles [7], thermoacoustic engines [8], and thermofluidic oscillators [9,10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of an Innovative Cascade Cycle Combining a Trilateral Cycle and an Organic Rankine Cycle (TLC-ORC) for Industry or Transport Application

et al. 2018

Energies

View full text Add to dashboard Cite

An innovative cascade cycle combining a trilateral cycle and an organic Rankine cycle (TLC-ORC) system is proposed in this paper. The proposed TLC-ORC system aims at obtaining better performance of temperature matching between working fluid and heat source, leading to better overall system performance than that of the conventional dual-loop ORC system. The proposed cascade cycle adopts TLC to replace the High-Temperature (HT) cycle of the conventional dual-loop ORC system. The comprehensive comparisons between the conventional dual-loop ORC and the proposed TLC-ORC system have been conducted using the first and second law analysis. Effects of evaporating temperature for HT and Low-Temperature (LT) cycle, as well as different HT and LT working fluids, are systematically investigated. The comparisons of exergy destruction and exergy efficiency of each component in the two systems have been studied. Results illustrate that the maximum net power output, thermal efficiency, and exergy efficiency of a conventional dual-loop ORC are 8.8 kW, 18.7%, and 50.0%, respectively, obtained by the system using cyclohexane as HT working fluid at THT,evap = 470 K and TLT,evap = 343 K. While for the TLC-ORC, the corresponding values are 11.8 kW, 25.0%, and 65.6%, obtained by the system using toluene as a HT working fluid at THT,evap = 470 K and TLT,evap = 343 K, which are 34.1%, 33.7%, and 31.2% higher than that of a conventional dual-loop ORC.

show abstract

Performance assessment of a thermoelectric generator applied to exhaust waste heat recovery

Cited by 105 publications

References 22 publications

Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application

Performance Investigation of an Exhaust Thermoelectric Generator for Military SUV Application

Better thermal management options with heat storage systems for various applications: An Evaluation

Investigation of an Innovative Cascade Cycle Combining a Trilateral Cycle and an Organic Rankine Cycle (TLC-ORC) for Industry or Transport Application

Contact Info

Product

Resources

About