International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 04 | Apr -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
A REVIEW OF AUTOMOTIVE THERMOELECTRIC GENERATOR GOVIND MISHRA1, SHUSHIL KUMAR SHARMA 2 1B.E.scholar, 2 Assistant
D.MAT, Raipur, Chhattisgarh, India professor, D.MAT, Raipur, Chhattisgarh, India
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract- An automotive thermoelectric generator (ATEG) is a device that converts some of the waste heat of an internal combustion engine (IC) into electricity using the Seebeck Effect. A typical ATEG consists of four main elements: A hot-side heat exchanger, a cold-side heat exchanger, thermoelectric materials, and a compression assembly system. ATEGs can convert waste heat from an engine's coolant or exhaust into electricity. By reclaiming this otherwise lost energy, ATEGs decrease fuel consumed by the electric generator load on the engine. However, the cost of the unit and the extra fuel consumed due to its weight must \ be also considered. Index Terms- Thermoelectric generator, Waste heat, Internal combustion engine, See beck Effect, Electricity, Fuel consumed.
Fig.1 TEG utilizing the exhaust gas heat This temperature difference is capable of generating 100-500W of electricity. In the water coolant based system, though the temperature is lower, it may be high enough to produce significant electricity for use in the vehicle when TEGs are attached.
1. INTRODUCTION 1.1 OVERVIEW The main focus of energy conversion is on three conversion locations mainly exhaust gas pipe (EGP), exhaust gas recirculation (EGR) cooler, and retarder. The most significant factors for the waste heat quality are power density and temperature range.
The main advantage of EGR gas is large temperature difference. Since EGR gas comes directly from the cylinders, its temperature is in the range of 820 K-1050 K, which is similar to that in exhaust manifold. Considerable amount of heat. In the power plants and other industries there are lots of flue gases produced having significant amount heat. In the chimneys the temperature of flue gases would be around 373K which is the hot junction & the ambient air is cold junction having temperature 308 K. So there is temperature difference of 353 K. Applying the same technique to this it will gives output of 4.583 mV for one thermocouple loop so by adding these in series in large number we can generate large amount of electricity.
The EGP is the target of the most automobile waste heat recovery related research. The exhaust system contains a large portion of the total waste heat in vehicle. The gas flow in exhaust gas pipe is relatively stable. Fig.1 shows that TEG utilizing the exhaust gas heat for operation. With exhaust temperatures of 973 K or more, the temperature difference between exhaust gas on the hot side and coolant on the cold side is close to 373 K.
Š 2017, IRJET
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