Power optimization in thermionic devices

Power optimization in thermionic devices

Conventional thermionic power generators and refrigerators utilize a barrier in the direction of transport to selectively transmit high-energy electrons, resulting in an energy spectrum of electrons that is not optimal for high efficiency or high power. Here, we derive the ideal energy spectrum for...

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Veröffentlicht in:Journal of physics. D, Applied physics Applied physics, 2005-06, Vol.38 (12), p.2051-2054
Hauptverfasser: Humphrey, T E, O'Dwyer, M F, Linke, H
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Sprache:eng
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Applied sciences
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Miscellaneous: thermoionic and thermoelectric converters, plasma guns, torches, etc
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container_issue 12
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container_title Journal of physics. D, Applied physics
container_volume 38
creator Humphrey, T E
O'Dwyer, M F
Linke, H
description Conventional thermionic power generators and refrigerators utilize a barrier in the direction of transport to selectively transmit high-energy electrons, resulting in an energy spectrum of electrons that is not optimal for high efficiency or high power. Here, we derive the ideal energy spectrum for achieving maximum power in thermionic refrigerators and power generators. By using energy barriers that block or transmit electrons according to their total momentum rather than their momentum in the direction of transport, the power of thermionic devices can, in principle, be doubled and the electronic efficiency improved by 25%.
doi_str_mv 10.1088/0022-3727/38/12/029
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subjects Applied sciences
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Miscellaneous: thermoionic and thermoelectric converters, plasma guns, torches, etc
title Power optimization in thermionic devices
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