Thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 35

Lockwood, A; Shields, V

doi:10.2172/6129341

Title: Thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 35

Full Record
Other Related Research

Abstract

The n-type selenide legs after 14,000 hours continue to show reasonable agreement with the 3M Co. published data. In the ingradient testing after 14,700 hours the n-legs show serious degradation in power to load. Weight loss measurements on the first samples of material produced by G.E. match the results previously obtained on R.C.A. material from the MHW program. The remaining MHW generator on test Q1-A has accumulated 22,519 hours and performance remains stable. The 18 couple modules S/N-1 and -3 previously tested at RCA show no significant change in operation during the current JPL testing. No changes in the trends of degradation of LES 8 and 9 and the Voyager RTGs have been observed.

Authors:: Lockwood, A; Shields, V

Publication Date:: Thu May 01 00:00:00 EDT 1980

Research Org.:: California Institute of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab. (JPL)

OSTI Identifier:: 6129341

Report Number(s):: DOE/ET/33062-T1
ON: DE81024235

DOE Contract Number:: AI03-79ET33062

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 30 DIRECT ENERGY CONVERSION; GADOLINIUM SELENIDES; ELECTRIC CONDUCTIVITY; THERMAL CONDUCTIVITY; GERMANIUM ALLOYS; THERMOELECTRIC PROPERTIES; SILICON ALLOYS; THERMOELECTRIC GENERATORS; MATERIALS TESTING; PERFORMANCE TESTING; COMPATIBILITY; EXPERIMENTAL DATA; N-TYPE CONDUCTORS; P-TYPE CONDUCTORS; SELENIDES; ALLOYS; CHALCOGENIDES; DATA; DIRECT ENERGY CONVERTERS; ELECTRICAL PROPERTIES; GADOLINIUM COMPOUNDS; INFORMATION; MATERIALS; NUMERICAL DATA; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SELENIUM COMPOUNDS; SEMICONDUCTOR MATERIALS; TESTING; THERMODYNAMIC PROPERTIES; NESDPS Office of Nuclear Energy Space and Defense Power Systems; 300301* - Thermoelectric Generators- Design & Development; 300303 - Thermoelectric Generators- Materials, Components, & Auxiliaries; 300302 - Thermoelectric Generators- Performance & Testing

Citation Formats


                    Lockwood, A, and Shields, V. Thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 35.  United States: N. p., 1980. 
        Web.  doi:10.2172/6129341.

Copy to clipboard


                    Lockwood, A, & Shields, V. Thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 35.  United States.  https://doi.org/10.2172/6129341

Copy to clipboard


                    Lockwood, A, and Shields, V. 1980.  
        "Thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 35".  United States.  https://doi.org/10.2172/6129341.  https://www.osti.gov/servlets/purl/6129341.

Copy to clipboard


                    
@article{osti_6129341,

  title        = {Thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 35},

  author       = {Lockwood, A and Shields, V},

  abstractNote = {The n-type selenide legs after 14,000 hours continue to show reasonable agreement with the 3M Co. published data. In the ingradient testing after 14,700 hours the n-legs show serious degradation in power to load. Weight loss measurements on the first samples of material produced by G.E. match the results previously obtained on R.C.A. material from the MHW program. The remaining MHW generator on test Q1-A has accumulated 22,519 hours and performance remains stable. The 18 couple modules S/N-1 and -3 previously tested at RCA show no significant change in operation during the current JPL testing. No changes in the trends of degradation of LES 8 and 9 and the Voyager RTGs have been observed.},

  doi          = {10.2172/6129341},

  url          = {https://www.osti.gov/biblio/6129341},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu May 01 00:00:00 EDT 1980},

  month        = {Thu May 01 00:00:00 EDT 1980}

}

Copy to clipboard

Technical Report:

View Technical Report (18.16 MB)

https://doi.org/10.2172/6129341

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 36

Technical Report Lockwood, A; Shields, V

The n-type selenide legs after 15,000 hours continue to show reasonable agreement with the 3M Co. published thermal conductivity data. In the ingradient testing after 16,500 hours the 3 surviving n-legs (out of 5) show serious degradation in power to load. Weight loss and thermoelectricity property measurements on the first samples of material produced by G.E. continue to correspond to the results previously obtained on R.C.A. material from the MHW program. The remaining MHW generator on test, Q1-A, has accumulated 23,679 hours and performance remains stable. The 18 couple modules S/N-1 and -3 previously tested at RCA show no significantmore »« less
https://doi.org/10.2172/6235697

Full Text Available
Thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 37

Technical Report Lockwood, A; Shields, V

The n-type selenide legs after 16,500 hours continue to show reasonable agreement with the 3M Co. published thermal conductivity data. In the ingradient testing after 17,000 hours the 3 surviving n-legs (out of 5) show serious degradation in power to load. Small scale ratcheting has been observed on the four p-legs but no large scale effects. Weight loss for both coated and uncoated material produced by G.E. are reported. No significant discrepancies with the results previously obtained on R.C.A. material from the MHW program have been found. Thermal conductivity measurements are also in agreement. The remaining MHW generator on test,more »« less
https://doi.org/10.2172/6013111

Full Text Available
Thermoelectric generator testing and RTG degradation-mechanisms evaluation. Progress report No. 32

Technical Report Lockwood, A

Thermal conductivity tests of the older p-type were terminated after 22,000 hours. The n-type selenide legs after 8000 hours continue to show agreement with the 3M Company published data. In the ingradient testing after 10,200 hours the n-legs show comparable performance to the reported 3M data. A new station for ingradient performance testing of the new design p-type legs with the Astroquartz/slurry wrap was nearly completed. Weight loss testing of the new design p-type TPM217 (no partition) with the Astroquartz/slurry wrap has been discontinued. A check of the last sample after 2649 hours at T/sub H/900/sup 0/C and T/sub C/150/supmore »« less
https://doi.org/10.2172/5369053

Full Text Available
Program of thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 38

Technical Report Lockwood, A; Shields, V

The n-type gadolinium selenide legs after 17,500 hours continue to show reasonable agreement with the 3M Co. published thermal conductivity data. Weight loss for both coated and uncoated Si-Ge material produced by G.E. are reported. No significant discrepancies with the results previously obtained on R.C.A. material from the MHW program have been found. Thermal conductivity measurements are also in agreement. The remaining MHW generator on test, Q1-A, has accumulated 26,800 hours and performance remains stable. The performance of the 18 couple modules S/N-1, S/N-2, and S/N-3 to date is summarized. Telemetry data indicate no changes in the trends of degradationmore » of LES 8 and 9 and the Voyager RTGs.« less
https://doi.org/10.2172/6164165

Full Text Available
Thermoelectric generator testing and RTG degradation mechanisms evaluation. Progress report No. 33

Technical Report Lockwood, A; Stapfer, G

The n-type selenide legs after 10,600 hours continue to show agreement with the 3M Co. published data. In the ingradient testing after 11,378 hours the n-legs show comparable performance to the reported 3M data. The new design p-type legs were placed on test. The remaining MHW generator on test Q1-A has accumulated 19,567 hours and performance remains stable. Three 18 couple modules S/N-1, 2, and 3 previously tested at RCA were received for JPL test and evaluation. S/N-1 has 1700 hours testing at JPL with results indistinguishable from those at the end of RCA testing in 1977. The performances ofmore »« less
https://doi.org/10.2172/5531078

Full Text Available

Similar Records