Technological evaluation of printed, large surface thermoelectric generators for waste heat recuperation: design, simulation and optimization

"In future, there will be an increasing demand for waste heat recovery systems (WHRS). So far current technologies are not expected to fulfill the requirement expected for a broad deployment. Thermoelectric generators (TEGs) for the direct transformation from heat to electricity represent hereb...

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Autor principal: Franke, Leonard
Otros Autores: Hecht, Matthias
Formato: Tesis de maestría
Lenguaje:Inglés
Publicado: 2017
Materias:
GENERACION DE ENERGIA ELECTRICA
TRANSFERENCIA DE CALOR
INTERCAMBIADORES DE CALOR
Acceso en línea:http://ri.itba.edu.ar/handle/123456789/905
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Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA) de Instituto Tecnológico de Buenos Aires (ITBA)
id I32-R138-123456789-905
record_format dspace
spelling I32-R138-123456789-9052022-12-07T15:21:05Z Technological evaluation of printed, large surface thermoelectric generators for waste heat recuperation: design, simulation and optimization Franke, Leonard Hecht, Matthias GENERACION DE ENERGIA ELECTRICA TRANSFERENCIA DE CALOR INTERCAMBIADORES DE CALOR "In future, there will be an increasing demand for waste heat recovery systems (WHRS). So far current technologies are not expected to fulfill the requirement expected for a broad deployment. Thermoelectric generators (TEGs) for the direct transformation from heat to electricity represent hereby a promising alternative. Novel printed TEGs based on organic and inorganic materials (OTEGs) will be brought to market maturity soon. The usage of new cost-efficient materials and the targeted automation as well as the scalability of the production process offer a considerable cost reduction compared to conventional TEGs, making this technology interesting for the recovery of large amounts of waste heat. Moreover, the used materials are environmentally compliant. For first time, a WHRS based on a simple plate heat exchanger design equipped with this new generation of TEGs was evaluated from a technological point of view. For this the thermal behavior of the system was simulated using the Simulink modelling environment and at the same time a fluid dynamical examination of the heat exchanger channels was conducted to determine the dissipated energy by the fluids in the heat exchanger using OpenFOAM. To determine the optimal operational conditions of the system the elaborated models where used. The models demonstrated that current generator efficiencies of ZT 0.1 could deliver next to the auxiliary energy also a surplus power of approximately 250 W compared to a heat power transferred of 39.44 kW. For future TEGs with an efficiency of ZT 0.5 an increase to 1.2 kW was determined by the models which is equivalent to a net system efficiency close to 2.5 %. The waste heat was bundled prior in a thermal oil cycle with a temperature of 230 °C while for the cooling cycle water at 15 °C was assumed". Tesis Energía y Ambiente (maestría) - Instituto Tecnológico de Buenos Aires, Buenos Aires - Karlsruher Institut für Technologie, Karlsruhe, 2017 2017-10-30T17:19:25Z 2017-10-30T17:19:25Z 2017 Tesis de maestría http://ri.itba.edu.ar/handle/123456789/905 en application/pdf
institution Instituto Tecnológico de Buenos Aires (ITBA)
institution_str I-32
repository_str R-138
collection Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA)
language Inglés
topic GENERACION DE ENERGIA ELECTRICA
TRANSFERENCIA DE CALOR
INTERCAMBIADORES DE CALOR
spellingShingle GENERACION DE ENERGIA ELECTRICA
TRANSFERENCIA DE CALOR
INTERCAMBIADORES DE CALOR
Franke, Leonard
Technological evaluation of printed, large surface thermoelectric generators for waste heat recuperation: design, simulation and optimization
topic_facet GENERACION DE ENERGIA ELECTRICA
TRANSFERENCIA DE CALOR
INTERCAMBIADORES DE CALOR
description "In future, there will be an increasing demand for waste heat recovery systems (WHRS). So far current technologies are not expected to fulfill the requirement expected for a broad deployment. Thermoelectric generators (TEGs) for the direct transformation from heat to electricity represent hereby a promising alternative. Novel printed TEGs based on organic and inorganic materials (OTEGs) will be brought to market maturity soon. The usage of new cost-efficient materials and the targeted automation as well as the scalability of the production process offer a considerable cost reduction compared to conventional TEGs, making this technology interesting for the recovery of large amounts of waste heat. Moreover, the used materials are environmentally compliant. For first time, a WHRS based on a simple plate heat exchanger design equipped with this new generation of TEGs was evaluated from a technological point of view. For this the thermal behavior of the system was simulated using the Simulink modelling environment and at the same time a fluid dynamical examination of the heat exchanger channels was conducted to determine the dissipated energy by the fluids in the heat exchanger using OpenFOAM. To determine the optimal operational conditions of the system the elaborated models where used. The models demonstrated that current generator efficiencies of ZT 0.1 could deliver next to the auxiliary energy also a surplus power of approximately 250 W compared to a heat power transferred of 39.44 kW. For future TEGs with an efficiency of ZT 0.5 an increase to 1.2 kW was determined by the models which is equivalent to a net system efficiency close to 2.5 %. The waste heat was bundled prior in a thermal oil cycle with a temperature of 230 °C while for the cooling cycle water at 15 °C was assumed".
author2 Hecht, Matthias
author_facet Hecht, Matthias
Franke, Leonard
format Tesis de maestría
author Franke, Leonard
author_sort Franke, Leonard
title Technological evaluation of printed, large surface thermoelectric generators for waste heat recuperation: design, simulation and optimization
title_short Technological evaluation of printed, large surface thermoelectric generators for waste heat recuperation: design, simulation and optimization
title_full Technological evaluation of printed, large surface thermoelectric generators for waste heat recuperation: design, simulation and optimization
title_fullStr Technological evaluation of printed, large surface thermoelectric generators for waste heat recuperation: design, simulation and optimization
title_full_unstemmed Technological evaluation of printed, large surface thermoelectric generators for waste heat recuperation: design, simulation and optimization
title_sort technological evaluation of printed, large surface thermoelectric generators for waste heat recuperation: design, simulation and optimization
publishDate 2017
url http://ri.itba.edu.ar/handle/123456789/905
work_keys_str_mv AT frankeleonard technologicalevaluationofprintedlargesurfacethermoelectricgeneratorsforwasteheatrecuperationdesignsimulationandoptimization
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