NDLI: Heat-Pipe Assisted Thermoelectric Generators for Exhaust Gas Applications

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Goncalves, L. M. Martins, Jorge Antunes, Joaquim Rocha, Romeu Francisco, P. Brito
Copyright Year	2010
Abstract	Millions of hybrid cars are already running on our roads with the purpose of reducing fossil fuel dependence. One of their main advantages is the recovery of wasted energy, namely by brake recovery. However, there are other sources of wasted energy in a car powered by an internal combustion engine, such as the heat lost through the cooling system, lubrication system (oil coolers) and in the exhaust system. These energies can be recuperated by the use of thermoelectric generators (TEG) based on the Seebeck effect, which transform heat directly into electricity. To recover the energy from the hot (up to more than 700 °C) exhaust gases it is possible to use controlled heat transfer, but this would limit the heat transfer potential at partial loads, as commercialy available TEG are limited by their maximum allowable temperature (∼250°C). Therefore Heat Pipes were used as an alternative heat transfer mean, so it would be possible to retain the heat transfer potential, while controlling the maximum temperature at a reasonable level. This is the method to recover the exhaust heat presented in this work. Numerical simulations were performed to assess the potential for this design, involving internal combustion engine simulation, thermoelectric generators simulation and heat transfer modelling. Additionally, the use of variable conductance heat pipes (VCHP) is discussed, as a means of achieving TEG module maximum temperature limitation.
Starting Page	1387
Ending Page	1396
Page Count	10
File Format	PDF
ISBN	9780791844298
DOI	10.1115/IMECE2010-40926
Volume Number	Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B
Conference Proceedings	ASME 2010 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2010-11-12
Publisher Place	Vancouver, British Columbia, Canada
Access Restriction	Subscribed
Subject Keyword	Temperature Computer simulation Roads Coolers Cooling systems Generators Fossil fuels Industrial lubrication systems Hybrid electric vehicles Modeling Stress Thermoelectricity Exhaust systems Design Gases Heat Simulation Heat pipes Internal combustion engines Electrical conductance Brakes Heat transfer
Content Type	Text
Resource Type	Article

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