Optically pumped cesium plasma neutralization of space charge in photon-enhanced thermionic energy converters

Tsuyohito Ito; Mark A. Cappelli

doi:10.1063/1.4767349

Optically pumped cesium plasma neutralization of space charge in photon-enhanced thermionic energy converters

Applied Physics Letters ◽

10.1063/1.4767349 ◽

2012 ◽

Vol 101 (21) ◽

pp. 213901 ◽

Cited By ~ 21

Author(s):

Tsuyohito Ito ◽

Mark A. Cappelli

Keyword(s):

Space Charge ◽

Optically Pumped ◽

Cesium Plasma ◽

Thermionic Energy ◽

Energy Converters

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Theory and performance of auxiliary discharge thermionic energy converters

Advanced Energy Conversion ◽

10.1016/0365-1789(63)90104-8 ◽

1963 ◽

Vol 3 (1) ◽

pp. 333-349 ◽

Cited By ~ 3

Author(s):

R.C. Knechtli ◽

Marvin Fox

Keyword(s):

And Performance ◽

Thermionic Energy ◽

Energy Converters

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Analysis of the Thermodynamic Consistency of the Richardson–Duhmann Model for Thermionic Converters

Energies ◽

10.3390/en13051087 ◽

2020 ◽

Vol 13 (5) ◽

pp. 1087

Author(s):

Antonio Martí

Keyword(s):

General Theory ◽

Entropy Generation ◽

Thermodynamic Consistency ◽

Generation Rate ◽

Entropy Generation Rate ◽

Thermionic Energy ◽

Energy Converters

In this work, we develop the general theory for analyzing the thermodynamic consistency of the Richardson–Duhmann model for vacuum thermionic energy converters. In addition to the electron fluxes from emitter to collector and vice versa, we calculate the energy and entropy fluxes associated to them. The calculation of the entropy fluxes is what allows us to conclude that the model is consistent by verifying that both at the emitter and at the collector the entropy generation rate is positive. In the process, we review the Richardson–Duhmann model in order to assure that the assumptions we make for calculating the energy and entropy fluxes are consistent. We also generalize the Richardson–Duhmann model in order to consider Fermi–Dirac statistics.

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