HIGH TEMPERATURE THERMOELECTRIC RESEARCH
Final technical rept. 15 Sep 1963-30 Oct 1964
MONSANTO RESEARCH CORP DAYTON OH
Pagination or Media Count:
Nominal 50-watt e and 15-watt e laboratory model generators were designed, fabricated and subjected to sustained and thermal cycling tests at a hot-junction temperature of about 1200C, and cold junctions of about 570C in a vacuum of 10-5 - 10-6 torr. Both generators, constructed of solid-state, bonded, segmented, p- and n-type thermoelements showed good resistance to degradation under these conditions. Improvements in the properties of thermoelectric materials and interface bonding techniques for thermoelements were achieved to yield p-n couples with 17 higher performance, relative to 1962-63 couples. Nuclear reactor, radioisotope, and solar-heated, high- temperature, thermoelectric, spacepowered system concepts were proposed and preliminarily investigated. These studies showed that high-temperature, 1200C thermoelectric space-type power units, ranging in size from a few watts to several hundred KW output, can be designed for performances from 335 lbs.KWe for a solar-concentrating type system to 15 lbs.KWe for 350 KWe or larger space power systems utilizing fast-reactor heat sources.
- Electric Power Production and Distribution