Solid-state engine | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-07-06

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Johnson_thermoelectric_energy_converter


00:00:57 1 Mechanism of action
00:03:21 2 Applications
00:04:06 3 See also



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SUMMARY
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A Johnson thermoelectric energy converter or JTEC is a type of solid-state heat engine that uses the electrochemical oxidation and reduction of hydrogen in a two-cell, thermal cycle that approximates the Ericsson cycle.   It is under investigation as a viable alternative to conventional photovoltaic cells. Lonnie Johnson invented it and claims the converter exhibits an energy conversion efficiency of as much as 60% compared to the 30% efficiency typical of the best photovoltaic cells; however, this claim is at a theoretical level based on comparison with a Carnot cycle and assumes a temperature gradient of 600 °C. It was originally proposed for funding to the Office of Naval Research but was refused. Johnson obtained later funding by framing the engine as a hydrogen fuel cell.  Johnson is collaborating with PARC on development of the engine.