A novel thermoelectric generation system with thermal switch

Gou, Xiaolong; Ping, Huifeng; Ou, Qiang; Xiao, Heng; Qing, Shaowei

doi:10.1016/j.apenergy.2014.11.049

Cited by 30 publications

(18 citation statements)

References 25 publications

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“…As in the thermal switch case considered above, it will also be important to consider parasitic heat losses and the breakdown of the constant Q h assumption in real applications. Experimentally, Gou et al 298 and McCarty et al 299 have shown modest (20%) increases in efficiency for thermoelectric generation systems using contact thermal switches to mimic this thermal regulator circuit (i.e., selecting the on/off switch timing based on the measured temperature, rather than switching based on a predetermined duty cycle).…”

Section: -22mentioning

confidence: 99%

Thermal diodes, regulators, and switches: Physical mechanisms and potential applications

Wehmeyer

Yabuki

Monachon

et al. 2017

Applied Physics Reviews

366

261

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Interest in new thermal diodes, regulators, and switches has been rapidly growing because these components have the potential for rich transport phenomena that cannot be achieved using traditional thermal resistors and capacitors. Each of these thermal components has a signature functionality: Thermal diodes can rectify heat currents, thermal regulators can maintain a desired temperature, and thermal switches can actively control the heat transfer. Here, we review the fundamental physical mechanisms of switchable and nonlinear heat transfer which have been harnessed to make thermal diodes, switches, and regulators. The review focuses on experimental demonstrations, mainly near room temperature, and spans the fields of heat conduction, convection, and radiation. We emphasize the changes in thermal properties across phase transitions and thermal switching using electric and magnetic fields. After surveying fundamental mechanisms, we present various nonlinear and active thermal circuits that are based on analogies with well-known electrical circuits, and analyze potential applications in solid-state refrigeration and waste heat scavenging.

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Section: -22mentioning

confidence: 99%

Thermal diodes, regulators, and switches: Physical mechanisms and potential applications

Wehmeyer

Yabuki

Monachon

et al. 2017

Applied Physics Reviews

366

261

View full text Add to dashboard Cite

show abstract

“…Therefore these fluctuations can be catered for to ensure a stable power output from the TEG system. A novel TEG system with thermal switch is designed to address problem of instability of TEG power output [100]. Fig.…”

Section: Progress On Teg Module Structural Improvementmentioning

confidence: 99%

A comprehensive review of thermoelectric technology: Materials, applications, modelling and performance improvement

Twaha

Zhu

Yan

et al. 2016

Renewable and Sustainable Energy Reviews

485

208

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Abstract:Thermoelectric (TE) technology is regarded as alternative and environmentally friendly technology for harvesting and recovering heat which is directly converted into electrical energy using thermoelectric generators (TEG). Conversely, Peltier coolers and heaters are utilized to convert electrical energy into heat energy for cooling and heating purposes The main challenge lying behind the TE technology is the low efficiency of these devices mainly due to low figure of merit (ZT) of the materials used in making them as well as improper setting of the TE systems. The objective of this work is to carry out a comprehensive review of TE technology encompassing the materials, applications, modelling techniques and performance improvement. The paper has covered a wide range of topics related to TE technology subject area including the output power conditioning techniques. The review reveals some important critical aspects regarding TE device application and performance improvement. It is observed that the intensified research into TE technology has led to an outstanding increase in ZT, rendering the use TE devices in diversified application a reality. Not only does the TE material research and TE device geometrical adjustment contributed to TE device performance improvement, but also the use of advanced TE mathematical models which have facilitated appropriate segmentation TE modules using different materials and design of integrated TE devices. TE devices are observed to have booming applications in cooling, heating, electric power generation as well as hybrid applications. With the generation of electric energy using TEG, not only does the waste heat provide heat source but also other energy sources like solar, geothermal, biomass, infra-red radiation have gained increased utilization in TE based systems.However, the main challenge remains in striking the balance between the conflicting parameters; ZT and power factor, when designing and optimizing advanced TE materials.Hence more research is necessary to overcome this and other challenge so that the performance TE device can be improved further.

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“…For example, Rojo et al [19] employed finite element modeling to determine the frequency regime for a measurable temperature and voltage response in Harman method. Besides, both experimental and numerical methods have been employed to study the system efficiency and stability of TE generator under fluctuant heat source [20,21]. Through this method, detailed solutions can be yielded that are not easily obtained through theoretical and experimental results and provide information of the physical insight into the nature and the mechanisms of the thermoelectric effects.…”

Section: Introductionmentioning

confidence: 99%

Dynamic thermal response characteristics and feasibility analysis of thermoelectric module in impedance measurement

Zhu

Deng

Wang

2017

Applied Thermal Engineering

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A novel thermoelectric generation system with thermal switch

Cited by 30 publications

References 25 publications

Thermal diodes, regulators, and switches: Physical mechanisms and potential applications

Thermal diodes, regulators, and switches: Physical mechanisms and potential applications

A comprehensive review of thermoelectric technology: Materials, applications, modelling and performance improvement

Dynamic thermal response characteristics and feasibility analysis of thermoelectric module in impedance measurement

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