Modeling a thermionic energy converter using finite-difference time-domain particle-in-cell simulations
Abstract
A thermionic energy converter (TEC) is a static device that converts heat directly into electricity by boiling electrons off a hot emitter surface across a small inter-electrode gap to a cooler collector surface. The main challenge in TECs is overcoming the space charge limit, which limits the current transmitted across a gap of a given voltage and width. We have verified the feasibility of studying and developing a TEC using a bounded finite-difference time-domain particle-in-cell plasma simulation code, OOPD1, developed by Plasma Theory and Simulation Group, formerly at UC Berkeley and now at Michigan State University. In this preliminary work, a TEC has been modeled kinetically using OOPD1, and the accuracy has been verified by comparing with an analytically solvable case, giving good agreement. With further improvement of the code, one will be able to quickly and cheaply analyze space charge effects, and seek designs that mitigate the space charge effect, allowing TECs to become more efficient and cost-effective.
Additional Information
© 2014 AIP Publishing LLC. Received 23 October 2013; accepted 3 February 2014; published online 25 February 2014. Work supported by the National Science Council, Taiwan, R.O.C. under Grant No. NSC 96-2112-M-030-004-MY3, NCTS, and NCHC, which provides the computing resources.Attached Files
Published - 1.4865828.pdf
Erratum - 1.4905178.pdf
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Additional details
- Eprint ID
- 45262
- Resolver ID
- CaltechAUTHORS:20140429-083059796
- National Science Council, Taiwan
- NSC 96-2112-M-030-004-MY3
- NCTS
- NCHC
- Created
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2014-04-29Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field