A case study on compatibility of automotive exhaust thermoelectric generation system, catalytic converter and muffler

Liu, X.; Deng, Yadong; Chen, S.; Wang, W.S.; Xu, Yabo; Su, Chuqi

doi:10.1016/j.csite.2014.01.002

Cited by 63 publications

(31 citation statements)

References 6 publications

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“…This results in reduction of engine power. Hence, the positioning of installation of an ETEG is an important consideration for uninterrupted operation of the engine as well as the ETEG . A few researchers studied the effect of ETEG installation position on engine backpressure.…”

Section: Technical Issues Faced In Eteg and Possible Solutionsmentioning

confidence: 99%

“…Structure of exhaust thermoelectric generator installation (A) at the end of exhaust system, (B) between the CC and muffler, and (C) upstream of CC and muffler (adapted from Liu et al) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Technical Issues Faced In Eteg and Possible Solutionsmentioning

confidence: 99%

“…Hence, the positioning of installation of an ETEG is an important consideration for uninterrupted operation of the engine as well as the ETEG. 69 A few researchers studied the effect of ETEG installation position on engine backpressure. Lu et al 41 combined an exhaust heat exchanger with the muffler in the form of 3 configurations as shown in Figure 13.…”

Section: Positioning Of Installation Of Eteg and Its Effect On Engimentioning

confidence: 99%

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Thermoelectric conversion of waste heat from IC engine-driven vehicles: A review of its application, issues, and solutions

Patowary

Baruah

2018

Int J Energy Res

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Summary Thermoelectric generator (TEG) is a promising thermoelectric (TE) conversion technology to effectively recover and convert waste heat from vehicle exhaust into useful energy, ie, electricity. Exhaust TEG (ETEG) is a system that is incorporated into the exhaust manifold of a vehicle. Exhaust TEG comprises of a heat exchanger, TEG modules, heat sink, and power conditioning unit. The present work reviews different vehicular ETEGs based on engine type, engine‐rated power, type and number of TEG module, efficiency of ETEG and TEG, exhaust and coolant temperature, and power output of ETEG. In addition to these, the technical issues faced in these ETEGs are addressed under 2 categories, viz., primary (TEG with low ZT TE material and inefficient heat exchanger and heat sink) and secondary issues (low operating temperature TEG modules and installation position of ETEG). In addition to it, effects of vibration and thermal cycling of exhaust system on TEG modules that may arise in ETEG are also discussed. A review of preventive solutions to the issues is also presented. Finally, the economic aspects of an ETEG are also discussed. The review highlights the need of commercialization of TE materials with ZT > 2, high‐temperature operating range, and segmented TEG modules in large volumes so that their practice can be extended in vehicular applications. Heat exchanger modeling using computational fluid dynamics and interfacing with heat transfer theory is essential to maintain temperature uniformity across the TEG modules. Installation of ETEG in the exhaust pipe should be such that it does not affect the performance of the engine. It is also realized that sturdy TEG modules should be developed for long‐term operation to prevent degradation due to mechanical vibration and thermal cycling of the vehicle. Further, ETEG is economically beneficial in vehicles such as trucks owing to availability of high thermal energy in their exhaust stream.

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Section: Technical Issues Faced In Eteg and Possible Solutionsmentioning

confidence: 99%

Section: Technical Issues Faced In Eteg and Possible Solutionsmentioning

confidence: 99%

Section: Positioning Of Installation Of Eteg and Its Effect On Engimentioning

confidence: 99%

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Thermoelectric conversion of waste heat from IC engine-driven vehicles: A review of its application, issues, and solutions

Patowary

Baruah

2018

Int J Energy Res

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“…The main components of the manufactured experimental TEG system, illustrated in Figure 2.5 are the main exhaust pipe, TEMs, and the heat pipe. The heat pipe used is a high conductive aluminium rod, 15 cm in length, 3.81 cm in outer diameter and 3 mm in thickness, it is incorporated between the exhaust of the engine and the muffler to utilize the maximum possible heat coming out of the engine [5]. This heat pipe act as the hot junction and ceramic material used act as the cold junction of the thermoelectric generator (TEG), two different wires (thermocouple) are winded on this heat pipe at one end and at other end they are attached to the cold junction.…”

Section: Elk Asia Pacific Journals -Special Issue Isbn: 978-81-930411mentioning

confidence: 99%

Experimental Analysis of a Waste-Heat-Utilization-Strategy Using Thermoelectric Device in C.I. Engine

2015

International Conference on Advancements and Recent Innovations in Mechanical, Production and Industrial Engineering

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Abstract-The present worldwide problem regarding automobiles is limitations of fuel and environmental pollution. When an internal combustion engine is operating, a large amount of energy is wasted as exhaust gas and with engine cooling. The efficiency of an internal combustion engine ranges from 30% to 40% and about 60% to 70% of the overall energy loss in a combustion engine is heat. The present experimental and computational study investigates waste heat recovery from the exhaust gas heat of an internal combustion engine using a thermocouple and heat pipes to produce electric power. This system proposes thermoelectric generation (TEG), working with heat pipes to produce electricity from a limited hot surface area. The current TEG system is directly connected to the exhaust pipe, to utilize the maximum possible heat available at the exhaust of C.I. engine. As designed, this heat recovery system produces a maximum of 1.54mV when the hot exhaust gas heats the evaporator surface of the heat pipe to 277o C. The results obtained, promises great possibilities for application of this technology in future energy-efficient vehicles.

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“…1, can be driven by waste heat from car exhaust. The temperature of the car exhaust gas is usually at the temperature between 240 °C and 480 °C [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Investigation of a Hybrid Compressor and Ejector Refrigeration System for Automotive Air Conditioning Application

Keerlatiyadatanapat¹,

Sriveerakul²,

Suvarnakuta³

et al. 2017

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Abstract. In this research, performance of a hybrid compressor and ejector refrigeration system for automotive air conditioning application was investigated theoretically and experimentally. Mathematical modeling integrated the 1-dimensional analysis of ejector with the thermodynamic analysis of the hybrid compressor and ejector refrigeration system via EES (Engineering Equation Solver) software was proposed. Also an experimental rig of the hybrid compressor and ejector refrigeration system for automotive air conditioning application was built. This hybrid system has a rated cooling capacity of 3.5 kW. Refrigerant R134a and R141b were used for mechanical vapor compression sub system and the ejector sub system, respectively. The operating conditions are chosen accordingly as, generator temperature between 100 °C and 120 °C, condenser temperature between 30 °C and 40 °C, and evaporator temperature between 0 °C and 10 °C. Theoretical results of the ejector's entrainment ratio (Rm) and COP of the system with variations on operating conditions were compared with the experiment values. From the results, mathematical modeling seems to provide error in COP prediction up to 15.5% when compared with experimental values. Fortunately, modification of the mathematical modeling by applying the computational fluid dynamics (CFD) technique provides less error about 5.5%. It's also found that the COP of the hybrid system can be increased by 10-20% compared to a simple stage ejector refrigeration cycle (EJC). Moreover, estimated power consumption of the automotive air conditioning system can be approximately reduced 20% under the conventional vapor compression cycle.

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A case study on compatibility of automotive exhaust thermoelectric generation system, catalytic converter and muffler

Cited by 63 publications

References 6 publications

Thermoelectric conversion of waste heat from IC engine-driven vehicles: A review of its application, issues, and solutions

Thermoelectric conversion of waste heat from IC engine-driven vehicles: A review of its application, issues, and solutions

Experimental Analysis of a Waste-Heat-Utilization-Strategy Using Thermoelectric Device in C.I. Engine

Experimental and Theoretical Investigation of a Hybrid Compressor and Ejector Refrigeration System for Automotive Air Conditioning Application

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