Thermoelectric Energy Harvesting from Transient Ambient Temperature Gradients

Moser, André; Erd, Metin; Kostić, Miloš; Cobry, Keith; Kroener, Michael; Woias, Peter

doi:10.1007/s11664-011-1894-4

Cited by 51 publications

(27 citation statements)

References 7 publications

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Section: Introductionmentioning

confidence: 99%

“…Conventional thermal energy harvesting mostly utilizes constant temperature gradient based on the Seebeck effect [2]. More recently, time-dependent fluctuating ambient temperature has been reported to be an alternative thermal energy source for energy harvesting [3,4].We previously proposed electret-based unsteady thermal generator utilizing permittivity change of ferroelectric material [5]. By using potassium tantalate niobate (KTN) crystal, output power of 572 nJ has been obtained in 300 s [6].…”

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confidence: 99%

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Electrostatic Unsteady Thermal Energy Harvester Using Nematic Liquid Crystal

Xie

Morimoto

Suzuki

2018

J. Phys.: Conf. Ser.

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A novel electrostatic unsteady thermal harvester is proposed using nematic liquid crystal as the temperature-sensitive dielectric. With its large anisotropic permittivity and relatively high resistivity, an early prototype is made using fluorinated liquid crystal BCH-5F.F.F. Temperature change of the liquid crystal induces its permittivity change, thereby output voltage is obtained. An effective circuit model is developed and the simulation results are compared with the experimental data for designing harvester with better performance.Keywords: Electrostatic, Thermal energy harvesting, Nematic liquid crystal, Resistivity IntroductionEnergy supply for low-power electronics is a big challenge with increasing demand of portable and wireless devices. Thermal energy harvesting can be a promising solution for self-powered electronics such as wireless sensing node [1], which is one of the essential components of the Internet of Things. Conventional thermal energy harvesting mostly utilizes constant temperature gradient based on the Seebeck effect [2]. More recently, time-dependent fluctuating ambient temperature has been reported to be an alternative thermal energy source for energy harvesting [3,4].We previously proposed electret-based unsteady thermal generator utilizing permittivity change of ferroelectric material [5]. By using potassium tantalate niobate (KTN) crystal, output power of 572 nJ has been obtained in 300 s [6]. However, relatively high operation temperature and long recovery time are the main drawbacks of the KTN-based system, which limit the actual application of unsteady energy harvester working in the room temperature range with rapid but small temperature fluctuations.In this paper, nematic liquid crystal with anisotropic permittivity is, for the first time, studied as temperature sensitive dielectric in the electret-based unsteady thermal energy harvester to improve the temperature sensitivity and fast-response to temperature variation.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Electrostatic Unsteady Thermal Energy Harvester Using Nematic Liquid Crystal

Xie

Morimoto

Suzuki

2018

J. Phys.: Conf. Ser.

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“…to power electric systems (Hudak and Amatucci 2008;Dembowski 2011;Moser 2012). Here, the primary energy can be kinetic in the form of vibrations, thermal in the form of temperature differences or as electromagnetic radiation (Penella and Gasulla 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Because the cooling lines do not necessarily have to be located in the immediate vicinity of potential measurement points, the ambient temperature of 40°C can be made out as a further potential heat sink. The present differences in temperature are suitable for the use of thermoelectric generators (TEGs) (Moser 2012), which convert thermal energy into electrical energy using the Seebeck effect (Fahrner and Schwertheim 2009). Critical to the amount of generated voltage are the parameters of the TEG.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Power Supply of Wireless Sensor Nodes in Marine Gearboxes

Schirrmacher

Ullmann

Overmeyer

2015

Energy Harvesting and Systems

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This article presents a solution for the thermoelectric power supply of wireless sensor nodes for condition monitoring of marine gearboxes. Among the different ambient energy sources in marine gearboxes, frictional heat has been identified to be appropriate to thermally power a thermoelectric generator (TEG). The such generated electricity may power wireless sensor nodes for detecting temperature, vibration, torque and rotational speed. Requirements for a corresponding energy supply are formulated, constructive solutions are presented and thermal simulations and practical experiments are reviewed. The results are evaluated and a solution is selected for further implementation, which provides for an actively cooled TEG in the area of the ship gearbox's heat exchanger. This can provide continuous electrical power of up to 14 mW, thus supplying the planned sensor nodes. The disadvantage of this solution is that a comparatively extensive mechanical modification, for example, to the oil and cooling water pipelines is required.

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“…Waste heat trapped from industry can be utilized in the industry itself. Waste heat from automobile cannot be easily trapped and utilized by us as much as the waste heat from a burning stove is, [1][2] for household purposes.…”

Section: Introductionmentioning

confidence: 99%

High Efficient Seebeck Thermoelectric Device for Power System Design and Efficiency Calculation: A Review of Potential Household Appliances

John¹

2014

IJCA

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The ever growing demand for electricity needs to be fulfilled with due cognizance of the environment factor and recycling energy as effectively as possible. This paper proposes the harnessing of the heat energy wasted in household appliances all of which can generate power in milli watt range. The most promising equipment for the supply of waste heat which can generate power over 1 watt seems to be the gas stove, the experimental feasibility analysis of which is the main target of this paper. Technology used for this end is called TEG which stands for Thermo Electric Generators based on the See beck effect. This device makes use of the temperature gradient across a TEG to generate an electromotive force (emf) across it. TEGs are increasingly in vogue due to lack of mechanical parts, low maintenance and high durability proved in space missions over the past decades. The focus of this paper is rather on the creation of the highest possible temperature difference to produce the highest possible power output.

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Thermoelectric Energy Harvesting from Transient Ambient Temperature Gradients

Cited by 51 publications

References 7 publications

Electrostatic Unsteady Thermal Energy Harvester Using Nematic Liquid Crystal

Electrostatic Unsteady Thermal Energy Harvester Using Nematic Liquid Crystal

Thermoelectric Power Supply of Wireless Sensor Nodes in Marine Gearboxes

High Efficient Seebeck Thermoelectric Device for Power System Design and Efficiency Calculation: A Review of Potential Household Appliances

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