Progress Towards an Optimization Methodology for Combustion-Driven Portable Thermoelectric Power Generation Systems

Krishnan, Shankar; Karri, Naveen K.; Gogna, P.; Chase, Jim; Fleurial, Jean‐Pierre; Hendricks, Terry J.

doi:10.1007/s11664-012-1964-2

Cited by 13 publications

(4 citation statements)

References 5 publications

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“…Thacher et al [16] conducted experiments to measure TEG performance and found that rectangular offset-strip fins considerably enhanced the heat transfer of an exhaust heat exchanger. Several other novel types of heat exchanger structures, such as multi-layer plates [17,18], microchannels [19], cylinders [20] and heat pipes [21] have been used for TEG.…”

Section: Introductionmentioning

confidence: 99%

Effects of heat enhancement for exhaust heat exchanger on the performance of thermoelectric generator

Wang

Chen

et al. 2015

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 99%

Effects of heat enhancement for exhaust heat exchanger on the performance of thermoelectric generator

Wang

Chen

et al. 2015

Applied Thermal Engineering

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“…Meanwhile, studies on liquid fuel-fired burner for TE power generation are limited, and development has been modest and remains largely unexplored. The literature is categorically limited to JP8 aviation fuel [34] and methanol [35]. Liquid fuels are easier to handle, relatively safer to transport, and possess greater energy density compared with conventional lithium-ion batteries [36].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the performance of a liquid fuel-fired porous burner operating on kerosene-vegetable cooking oil (VCO) blends for micro-cogeneration of thermoelectric power

Mustafa

Abdullah

Abdullah³

et al. 2015

Renewable Energy

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a b s t r a c tStudies related to porous burner for thermoelectric (TE) power generation have mainly focused toward achieving a specific range of power output for various applications. However, detailed analyses on the performance and emission aspects of the porous burner are lacking. In addition, physical integration between the burner and TE modules has added further complexity in this research area. Thus, this work aims to comprehend the effects of fueleair equivalence ratio on the performance and emission characteristics of a liquid fuel-fired porous burner for micro-cogeneration of TE power. A catalytically inert Al 2 O 3 porous medium was incorporated into a liquid fuel-fired porous burner operating on four mixtures of kerosene-vegetable cooking oil (VCO) blends: 100 kerosene, 90/10 KVCO, 75/25 KVCO, and 50/50 KVCO. Ten bismuth-telluride TE cells were arranged in a ten-sided polygon that, together with finned dissipators, formed a TE module electrically connected in series but thermally connected in parallel. The performance aspects at various fueleair equivalence ratios were thoroughly evaluated with the corresponding temperature profiles, voltage, current, power output, and electrical efficiency. Results indicated that the surface temperature of the porous media was generally higher than the developed and exit flame temperature of the burner. Varying the fuel-air equivalence ratio significantly affected the electrical efficiency, with a maximum and minimum value of 1.94% and 1.10%, respectively. The power output steadily increased in the lean region, but stabilized as the fueleair equivalence ratio slowly increased beyond the stoichiometric ratio. The CO emission was relatively lower at the lean region; however, significant amount was recorded in the rich combustion region. Moreover, NOx fluctuated between 1 ppm and 4 ppm over the entire range of fueleair equivalence ratio.

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“…The hot side is usually determined by the waste heat resources, so in order to increase the temperature difference, high heat transfer performance should get to reduce the temperature at the cold side as lower as possible. Effective exhaust heat exchanger design is critical for improving TEG performance, and some novel types of heat exchanger structures, such as roll cake structure [12] , multi-layer plates [13] , microchannels [14] , and heat pipes [15] have been used for TEG. In this study ,a Jet Impinging Cooling of TEG is studied.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of cooling design on the performance of thermoelectric Generator

Guo¹,

Yan²,

Zhao³

2015

Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering

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Thermoelectric generators(TEG) is considered as a promising technology for utilizing low-grade thermal energy, while the cooling system plays a key role in TEG. A two-dimensional numerical model of jet impinging jet cooling is developed based on the commercial code FLUENT. The influences of several factors on thermoelectric conversion efficiency are observed. The factors include the air inlet velocity, the TE legs height, and the fins. The results show that the air inlet velocity is one of the most important factors for the cooling performance, the convection heat transfer efficiency and conversion efficiency significantly increases with the improvement of the air velocity. Higher TE legs height can influence the TEG performance effectively, 5~7mm legs height is recommended in this study. And fins can effectively increase the TEG efficiency, the thermoelectric conversion efficiency with 1mm×1mm fins is 6.73% which was 2.4 times higher than without fins.

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Progress Towards an Optimization Methodology for Combustion-Driven Portable Thermoelectric Power Generation Systems

Cited by 13 publications

References 5 publications

Effects of heat enhancement for exhaust heat exchanger on the performance of thermoelectric generator

Effects of heat enhancement for exhaust heat exchanger on the performance of thermoelectric generator

Experimental investigation of the performance of a liquid fuel-fired porous burner operating on kerosene-vegetable cooking oil (VCO) blends for micro-cogeneration of thermoelectric power

Enhancement of cooling design on the performance of thermoelectric Generator

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