NDLI: Maximum thermionic energy conversion efficiency based on the thermodynamics of irreversible processes

Content Provider	IEEE Xplore Digital Library
Author	Moyzhes, B.Ya. Fitzpatrick, G.O.
Copyright Year	1996
Description	Author affiliation: Space Power Inc., San Jose, CA, USA (Moyzhes, B.Ya.)
Abstract	An electron gas in a vacuum between two electrodes is treated as a thermoelectric material, with thermopower, electrical conductivity and thermal conductivity. Figure of merit zT values obtained from the analysis are very high compared with solid thermoelectrics due to the absence of parasitic phonon thermal conductivity. Due to the large zT, thermionic conversion can work even in the ignited mode regime, which is very paradoxical as a thermodynamic cycle. In this mode, the electron gas (the working fluid of the cycle) is first heated by electrical power to a temperature T/sub M/ much higher than the evaporator temperature T/sub E/, in order to generate positive ions for electron space charge compensation. The electrons are then cooled from T/sub M/ to T/sub C/ (the condenser temperature) and enough electrical power is generated to compensate for losses inside the cycle and to provide power to the electrical load. The voltage drop required in order to maintain the ignited mode regime is evaluated.
Starting Page	957
Ending Page	961
File Size	293126
Page Count	5
File Format	PDF
ISBN	0780335473
ISSN	10893547
DOI	10.1109/IECEC.1996.553828
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-08-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Energy conversion Thermal conductivity Electrons Temperature Thermoelectricity Power generation Electrodes Conducting materials Solids Phonons
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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