HIGH TEMPERATURE THERMOELECTRIC RESEARCH
Abstract
The experimental model generator, previously operated for 2556 hr at 1200 C in a vacuum of 10 to the minus 5th power to 10 to the minus 6th power mm Hg without degradation of power output, was disassembled and examined. No physical change or damage to its MCC 50-graphite thermo elements was found. Formulations of new p- and n-type thermoelectric materials, to supplement MCC 50, were standardized and techniques developed for forming them into segmented thermoelements. Realistic measurements of segmented p- and n-type thermoelements showed that efficiences ranging from 3% for p-type to 6% for n-type can be attained for such units when operating between 1200 C and 460 C. Emittance measurements on a new coating for use on the copper radiators of the advanced experimental model generator, or the surfaces of space vehicles, showed that it is capable of emissivity values ranging from 0.9 at 500 C to 0.98 at 900 C.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1963
- Accession Number
- AD0409915
Entities
People
- C. M. Henderson
Organizations
- Monsanto