Development of thermoelectric power generation system utilizing heat of combustible solid waste

Kajikawa, Takenobu; Itô, Makoto; Katsube, Izumi; Shibuya, Eiichi

doi:10.1063/1.46822

Cited by 14 publications

(2 citation statements)

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“…A possible source of energy to meet the energy demand is the conversion of waste heat (household or industrial scale) into electricity. Researchers have recently attempted to make use of heat energy generated at garbage incinerator and for that they have installed a 60 W module at the boiler section where temperature variation was from 823 to 973 K and an efficiency of 4.4% was achieved with adequate cooling system [3]. The thermoelectric (TE) technology has been seen as the potential solution because of its ability to utilize waste heat into useful electric energy (by virtue of seebeck effect) without emission of any green house gases.…”

Section: Introductionmentioning

confidence: 99%

Investigating Phase Transition and Morphology of Bi-Te Thermoelectric System

Thakur,

Upadhyay,

Kaur

et al. 2019

Preprint

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The optimization of secondary of secondary phase in a thermoelectric materials can help to improve the efficiency of the material. Being a potential candidate, Bismuth telluride (Bi 2 Te 3 ) nanoparticles were synthesized via different routes and profiles to optimize its pure single phase.Systematic characterizations were performed with the help of X-ray diffraction, Rietveld refinement, Field effect-Scanning electron microscopy(FE-SEM) for structural and morphological behavior. Rietveld refinement in XRD-data of the samples revealed that only a small amount (∼ 1.6%) of Bi 2 Te 3 was formed in co-precipitation method, while hydrothermal technique increases this phase with increment in synthesis duration. This work focussed on the phase evolution of Bi 2 Te 3 with increasing synthesis duration time at constant temperature. XRD Rietveld refinement revealed that 84% pure phase was obtained when sample is synthesized at 150 • C for 48 hours by hydrothermal technique. FE-SEM and Energy Dispersive X-ray (EDX) analysis also indicated that impure phase is decreased along with atomic percentage of oxygen from 37% to 11% in hydrothermally synthesized sample. The detailed analysis has generalized the growth mechanism in Bi 2 Te 3 phase evolution by the diffusion of Bi into Te nanorods to fabricate hexagonal Bi 2 Te 3 .

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Section: Introductionmentioning

confidence: 99%

Investigating Phase Transition and Morphology of Bi-Te Thermoelectric System

Thakur,

Upadhyay,

Kaur

et al. 2019

Preprint

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“…The most common applications are for cathodic protection, data acquisition and telecommunications. More recently, there has been a growing interest for waste heat recovery power generation, using various heat sources such as the combustion of solid waste, geothermal energy, power plants, and other industrial heatgenerating processes (Matsuura, 1993(Matsuura, ), @owe et al, 1993, and (Kajikawa et al, 1993). There is currently an important effort in Japan to develop large scale waste heat MEASUREMENT PERFORMED ON A CYLINDRICAL p-END (USING A 85% Zn -15%Cd EUTECTIC ALLOY).…”

Section: Potential Applicationsmentioning

confidence: 98%

Zn-Sb alloys for thermoelectric power generation

Caillat

Fleurial²

IECEC 96. Proceedings of the 31st Intersociety Energy Conversion Engineering Conference

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P-ZmSbs was recently identified as a new high performance p-type thermoelectric material (Caillat et al., 1996). A maximum dimensionless thermoelectric figure of merit of about 1.3 was obtained on p-type P-ZmSb3 samples at a temperature of about 400'C. This is the highest figure of merit ever obtained at this temperature for a p-type thermoelectric material. The possibility of improving ZT values by forming Zm,CdxSb3 solid solutions was studied. Preliminary results obtained on alloys between ZmSb3 and C&Sb3 are presented and show that the lattice thermal conductivity can be reduced.As a result, a maximum ZT value of 1.4 at a temperature of about 250°C was obtained for a sample with a composition Zn3.2Cd0.8Sb3. Initial bonding and stability studies are presented and show that the integration of these materials into devices is possible. The efficiency of a thermoelectric generator using these new materials was calculated and the results show that significant improvements are possible compared to state-of-the-art thermoelectric materials. Some potential applications for these new thermoelectric materials are described. INTRODUCTIONThermoelectric generators convert heat energy directly into electrical energy without moving parts. They are reliable,

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