Update on the Design and Development of a TEG Cogenerator Device Integrated into Self-Standing Gas Heaters

Codecasa, M.; Fanciulli, Carlo; Gaddi, R.; Gomez-Paz, Francisco; Passaretti, Francesca

doi:10.1007/s11664-013-2598-8

Cited by 7 publications

(6 citation statements)

References 1 publication

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“…Despite their low efficiency of <7%, the absence of moving parts has been said to make TEGs reliable power generators when operated under stable thermo-mechanical conditions [1]. TEGs are widely employed in a variety and growing number of applications, including but not limited to space exploration [2], automotive heat recovery applications [3], remote power applications [4], domestic power generation [5,6] and industrial waste heat recovery [7,8]. However, when operated in an environment that undergoes thermal cycling, the power generating performance of TEGs can be adversely affected.…”

Section: Introductionmentioning

confidence: 99%

Thermal cycling of thermoelectric generators: The effect of heating rate

et al. 2019

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Thermoelectric generators, or TEGs, are solid state devices which can convert heat directly into electricity according to the Seebeck effect. When thermoelectric generators are subjected to thermal cycling they can undergo severe performance degradation. In this study, an experimental rig is constructed which is capable of thermally cycling the heat delivered to commercially available thermoelectric generators. An experimental investigation is undertaken to elucidate the effects of the cycling and heating rate on the power generation performance of the generators over time. Three generator modules of the same specifications were subjected to different heating rates. The figure of merit, the electrical power output, the effective Seebeck coefficient and the internal resistance of the generators are measured to assess the evolution of the modules' performance over 600 heating and cooling cycles. It is determined that all thermoelectric generators display power generation performance reductions, and that faster thermal cycling rates lead to both faster performance degradation and an overall greater performance drop. It is observed that the reduction of the figure of merit and power generation performance is primarily due to the increase of the internal resistance of the thermoelectric generators.

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Section: Introductionmentioning

confidence: 99%

Thermal cycling of thermoelectric generators: The effect of heating rate

et al. 2019

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“…The use of TEG for waste heat to electricity conversion is not new, but perhaps is only now becoming more important in everyday applications [6]. For instance, Codecasa et al [7,8] recently developed a 5 W, 12 V TEG system with the goal of powering an autonomous gas heater for commercial outdoor use. Many of the research carried out are more on the potential of TEGs utilize heat from cooking stoves.…”

Section: Introductionmentioning

confidence: 99%

Analysis on the Performance of a Prototype of Thermoelectric based Power Generation System

et al. 2018

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There are needs on electricity but people cannot get electricity including when doing outdoor activities at isolated areas, selling goods in night market and during disaster such as flood and earthquake. People need electricity especially for charging communication gadgets and lighting. Thus, the objective of this study is to develope and test the performance of a small prototype of thermoelectric generator (TEG) based power generation system. The TEG based power generation system developed consists of heat collector, thermoelectric generator, heat pipe and fin based heat sink, and DC-DC converter. The heat collector was designed to ensure the suitable temperature for the TEG which is should not exceed 320°C on the hot side. Heat pipes was used to increase the power output by lowering or maintaining the temperature at cold side, to ensure large temperature difference is obtained. The prototype was tested and data of temperature, voltage and current were collected. A cell phone was used during the test as a load to the system. All the data were recorded by using temperature data recorder, power meter and multimeter. It was found that the highest maximum power output was 7.7 watt at the temperature difference of 138°C. The output is sufficient to charge the cell phone and it is also possible to light an LED bulb. However, it did not achieve the maximum output of 43 W. This is a results of limitation of maximum electrical load (only one cell phone was used) and the limitation of the performance of the prototype. Thus, although the prototype is succesfully generate enough power to charge a cell phone, but improvement in heat sink design, and adding more electrical load are needed to get better results.

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“…[2][3][4], the TEG systems have implemented natural air cooling, however the power output is low and well below the maximum rated power. However, the excellent reliability associated with the system having no moving parts makes this solution viable for space exploration [5], automotive heat recovery applications [6], remote power applications [7], domestic power generation [3,4], and solar power generation [8]. It is worth noting that a hybrid passive solution to improve heat spreading over the air-side fins, and thus natural air cooling effectiveness, is to employ heat pipes [9,10].…”

Section: Introductionmentioning

confidence: 99%

Simulation-driven design of a passive liquid cooling system for a thermoelectric generator

et al. 2017

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Active cooling of thermoelectric generators (TEGs) is problematic since mechanical devices such as pumps and fans draw a high proportion of the limited power generated. Increasing the coolant fluid flow rate is typically a scenario of diminishing gains since the increased TEG power can be more than offset by the increase in power required for the fluid mover. Passive air cooling is an option, however the high air-side thermal resistance results in poor TEG power performance and low thermal efficiency. To address these issues, and others, a passive single phase liquid thermosyphon cooling system for use with TEGs has been designed, computationally simulated and experimentally tested. The novelty of the cooling system centres not only on the hot-side heat exchanger design, but also on the use of an open liquid reservoir as a dual-purposed heat store and air-side heat sink. This results in an effective source-to-sink heat exchange system that is entirely passive while providing effective cooling. This work describes the Simulation-Driven Design approach used to design the system for an example of a single TEG, experimental verification of the simulation results and TEG performance characteristics with the new cooling system.

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Update on the Design and Development of a TEG Cogenerator Device Integrated into Self-Standing Gas Heaters

Cited by 7 publications

References 1 publication

Thermal cycling of thermoelectric generators: The effect of heating rate

Thermal cycling of thermoelectric generators: The effect of heating rate

Analysis on the Performance of a Prototype of Thermoelectric based Power Generation System

Simulation-driven design of a passive liquid cooling system for a thermoelectric generator

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