LSSA Project. Project quarterly report No. 4, January--March 1977

One of 3 reports in the series: Low-Cost Silicon Solar Array Project available on this site.

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A preliminary version of a workbook for SAMICS, a uniform costing methodology for manufacturing processes, was published. Continued experimentation with the fluidized bed reactor for production of Si by Zn reduction of SiCl/sub 4/ showed that 78 percent of theoretical conversion efficiency from SiCl/sub 4/ to Si was attainable using a hemispherical bed support, versus 68 percent when using the concise bed support. The EFG process is now producing 2-inch wide ribbon at 2 to 3 inches per minute; however, conversion efficiencies remain low at 2 percent to 3 percent. Work on the CAST process has stopped pending contract negotiation. … continued below

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89 pages

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Creator: Unknown. January 1, 1977.

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A preliminary version of a workbook for SAMICS, a uniform costing methodology for manufacturing processes, was published. Continued experimentation with the fluidized bed reactor for production of Si by Zn reduction of SiCl/sub 4/ showed that 78 percent of theoretical conversion efficiency from SiCl/sub 4/ to Si was attainable using a hemispherical bed support, versus 68 percent when using the concise bed support. The EFG process is now producing 2-inch wide ribbon at 2 to 3 inches per minute; however, conversion efficiencies remain low at 2 percent to 3 percent. Work on the CAST process has stopped pending contract negotiation. Materials other than SiO/sub 2/ are being evaluated for the die used in the inverted Stepanov process. Development of low-cost encapsulation materials and systems is continuing. Production process emphasis was shifted to the cost-effectiveness of processes still being considered, and to the sensitivity of these processes to commercially realistic tolerances. Engineering work centered in two primary areas: the finalizing of a substantially updated module design specification, and expanded activity in the development of environmental design requirements. (MHR)

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89 pages

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Dep. NTIS, PC A05/MF A01.

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1977

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  • July 2, 2018, 10:52 p.m.

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LSSA Project. Project quarterly report No. 4, January--March 1977, report, January 1, 1977; Pasadena, California. (https://digital.library.unt.edu/ark:/67531/metadc1197202/: accessed February 8, 2025), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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