Combustion heated cold seal TEC [thermionic energy convertor]

Yarygin, V. I.; Klepikov, V. V.; Meleta, Ye.A.; Mikheyev, A; Yarygin, D. V.; Wolff, L.R.

doi:10.1109/iecec.1997.658220

Cited by 3 publications

(3 citation statements)

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“…The devices were able to achieve current and output power densities of A ≈ 5 − 10 Acm −2 and P ≈ 2.5 − 5 Wcm −2 , respectively. [3,[82][83][84] Experimentation with plasma-based TECs was largely discontinued after the twentieth century, due in part to the complexity of plasma engineering and the efficiency limitations of these devices that required them to be operated at very high temperatures. We refer the reader to the previous literature reviews for additional information.…”

Section: Substratementioning

confidence: 99%

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Progress Toward High Power Output in Thermionic Energy Converters

Campbell

Celenza

Schmitt³

et al. 2021

Advanced Science

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Thermionic energy converters are solid‐state heat engines that have the potential to produce electricity with efficiencies of over 30% and area‐specific power densities of 100 Wcm−2. Despite this prospect, no prototypes reported in the literature have achieved true efficiencies close to this target, and many of the most recent investigations report power densities on the order of mWcm−2 or less. These discrepancies stem in part from the low‐temperature (<1300 K) test conditions used to evaluate these devices, the large vacuum gap distances (25–100 µm) employed by these devices, and material challenges related to these devices' electrodes. This review will argue that, for feasible electrode work functions available today, efficient performance requires generating output power densities of >1 Wcm−2 and employing emitter temperatures of 1300 K or higher. With this result in mind, this review provides an overview of historical and current design architectures and comments on their capacity to realize the efficiency and power potential of thermionic energy converters. Also emphasized is the importance of using standardized efficiency metrics to report thermionic energy converter performance data.

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Section: Substratementioning

confidence: 99%

“…The devices were able to achieve current and output power densities of

A \approx 5 - 10

Acm −2 and

P \approx 2.5 - 5

Wcm −2 , respectively. [ 3,82–84 ]…”

Section: Historical Researchmentioning

confidence: 99%

Progress Toward High Power Output in Thermionic Energy Converters

Campbell

Celenza

Schmitt³

et al. 2021

Advanced Science

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“…Other options for using low-efficiency power sources are for electrochemical protection of gas pipelines against corrosion when fuel is available in excess [3,4], or for heat recovery, which is normally lost in the surrounding space [5]. For example, TEG designs have been developed for utilizing heat from exhaust gases from cars [6,7] or heat that is lost during combustion or gasification of biomass [8,9].…”

Section: Introductionmentioning

confidence: 99%

Energy and economic analysis of thermoelectric generator on wood fuel

Marchenko

2020

E3S Web Conf.

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The advantages of thermoelectric generator (TEG) are the absence of moving parts, reliability, long service life, the possibility of fully automatic operation without maintenance. At the same time, TEGs also have disadvantages - low efficiency and high cost. In this regard, it is advisable to use them in autonomous installations of small power, as well as in devices intended mainly for heat supply, when the low efficiency of thermal energy conversion into electrical energy does not play a role. It is the latter case that is realized in furnaces that burn biomass. In this paper, we consider the main physical effects due to which the direct conversion of thermal energy into electrical energy occurs in semiconductor thermoelements. The conjugate problem of heat and electric charge transfer with temperature-dependent properties of a semiconductor is reduced to a problem with constant properties. Based on the literature data, the boundary conditions for the TEG were selected, its sizes were optimized, current-voltage characteristics were constructed, and the maximum power and efficiency were determined. Estimates of the cost and economic efficiency of using TEG are made.

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