Temperature Controlled Exhaust Heat Thermoelectric Generation

Brito, F. P.; Martins, Jorge; Gonçalves, L. M.; Sousa, Rui

doi:10.4271/2012-01-1214

Cited by 16 publications

(15 citation statements)

References 19 publications

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“…One possible method of addressing the first concern-spatial temperature nonuniformity along the exhaust stream-is to use a high thermal conductivity device (e.g., heat pipes/vapor chambers or heat spreaders with integrated diamond layers or carbon nanotubes arrays) to load level the temperature of the TEG hot sides. 18,19 The advantage of this would be more uniform power generation across the array of TEGs when compared to a configuration where TEGs along the length of the exhaust are exposed to progressively lower temperatures, which shifts the material properties and leads to non-uniform power generation. Additionally, it may prove to be a simpler and less expensive solution than trying to optimize the TEG material configuration to match the expected spatial temperature gradient down the length of the exhaust.…”

Section: Introductionmentioning

confidence: 99%

Vehicle Exhaust Waste Heat Recovery Model with Integrated Thermal Load Leveling

Migliaccio¹,

Jankowski²

2015

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Section: Introductionmentioning

confidence: 99%

Vehicle Exhaust Waste Heat Recovery Model with Integrated Thermal Load Leveling

Migliaccio¹,

Jankowski²

2015

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“…Solutions for controlling the operating temperature of TEGs with low thermal resistance and high reliability (no moving parts) have been proposed by the team using heat-pipes. This included both theoretical and experimental work with several proof-ofconcept prototypes [15][16][17][18]. This solution avoids the use of by-Working Copy (for Educational/Research use only).…”

Section: Introductionmentioning

confidence: 99%

Influence of Heat Pipe Operating Temperature on Exhaust Heat Thermoelectric Generation

Brito¹,

Gonçalves²,

Martins³

et al. 2013

SAE Int. J. Passeng. Cars - Mech. Syst.

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Increasingly stringent targets on energy efficiency and emissions, as well as growing vehicle electrification are making attractive the electric recovery of the energy normally wasted through the tailpipe of Internal Combustion Engines. Recent developments in thermoelectrics (TE) may soon make them a viable solution for such applications [1]. This team has been exploring the potential of using TE modules in combination with variable conductance heat pipes for transferring the exhaust heat to the generator with very low thermal resistance and at a constant, prescribed temperature. This passive temperature control eliminates the need for bypass systems in the event of temperature overshoots. The operating temperature of a generator should be as high as possible in order to maximize the Seebeck effect. However, currently available modules are temperature limited. Moreover, the higher the HP temperature the less the usable thermal power at the exhaust will be (heat can only be transferred to from a hotter to a colder body). The present work assesses both theoretically and experimentally the influence of the HP temperature in the electric output of a thermoelectric generator. A small diesel engine and a generator were tested and it was found that a high HP operating temperature is only limitative for performance in the cases where low exhaust temperature and low engine power are present. In those cases it is possible to estimate an optimal HP temperature in order to maximize power output. The combined use of Seebeck modules and heat pipes was found to be highly advantageous in various ways.

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“…Clearly, the needs to improve cold start emission by utilizing the waste heat in the engines to ensure that the lubricant temperature may rise in quicker time. Brito et al, (2012) [19] stated that the released energy from the engine combustion will be then released to the exhaust gas about 15% up to 40%.…”

Section: Catalytic Converter Design and Stabilitymentioning

confidence: 99%

“…This alternative ways offers benefits on fuel consumption and produced better emissions which also related in reducing the engines load over engine alternator. Brito et al, (2012) [19] had managed the investigation for thermal electricity application which is also known as thermoelectric generator (TEG). The heat exchanger process occurs between the TEG and the exhaust gas is using the heat pipes which act as a medium.…”

Section: Figure 4 Hc and Co Emission Against Engine Combustion Tempementioning

confidence: 99%

Emission Treatment towards Cold Start and Back Pressure in Internal Combustion Engine against Performance of Catalytic Converter: A Review

et al. 2016

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Abstract. Nowadays, regulation for the vehicles emissions has becoming more stringent in order to reduce the effect of pollutant gases that was being released by the vehicles exhaust. The development of catalytic converter is to resolve the pollution emission aspect . There are lots of improvements done by the researchers towards improving catalytic converter, yet there are still key issues which give negative impact to the environment. One of the problems that are being concern by among of researchers is the cold-start and back pressure problems that usually occur in the composition of catalytic converter. Presented here is a review of cold-starts and back pressure problems together with several alternatives taken by not affecting the performance of vehicles engine and fuel consumption. The review also includes alternative system development and selection of materials to resolve these problems.

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Temperature Controlled Exhaust Heat Thermoelectric Generation

Cited by 16 publications

References 19 publications

Vehicle Exhaust Waste Heat Recovery Model with Integrated Thermal Load Leveling

Vehicle Exhaust Waste Heat Recovery Model with Integrated Thermal Load Leveling

Influence of Heat Pipe Operating Temperature on Exhaust Heat Thermoelectric Generation

Emission Treatment towards Cold Start and Back Pressure in Internal Combustion Engine against Performance of Catalytic Converter: A Review

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