diesel generators in order to save maintenance and fuel cost. It is expected to feed annually 170,000 kWh of electrical energy from the solar power plant into the grid and to save 50,000 liters of diesel fuel and approximately 4000 operating hours of the diesel generators. (Author) Source of Abstract (Subfile)s AIAA/TIS Keywords: *CURRENT CONVERTERS (AC TO DC); *ELECTRIC POWER PLANTS; *P0WER EFFICIENCY; *S0LAR GENERATORS; ♦SYSTEMS ENGINEERING; ALTERNATING CURRENT; CIRCUIT DIAGRAMS; DIRECT CURRENT; FEEDBACK CONTROL; GREECE Subject Classification: 7544 Energy Production & C o n v e r s i o n (1975-) The upper limit of concentration under extended sources of radi ance. MINANO, J. C.; LUQUE, A. (Madrid, Universidad Politecnica, Madrid, Spain) IN: Photovoltaic Solar Energy Conference; Proceedings of the Fifth International Conference, Athens, Greece, October 17-21, 1983 (A85-11301 02-44). Dordrecht, D. Reidel Publishing Co., 1984, p. 192-196. 7 Refs. Language: Eng1ish. Country of Origin: Spain. Country of Publication: Nether1ands Document Type: CONFERENCE PAPER Most documents available from AIAA Technical Library Journa1 Announcement: IA A8502 A review of the theoreti ca1 analysis of the 1imits of concentration under extended sources of arbitrary distribution of radiance based solely on the Fermat principle and its derivation (the theorem of the conservation of the? etendue) and not on the specific shape of the concentrators, is presented. It is concluded that for casting increasingly high values of energy on the collector, which in photovoltaic cases would be a bifacial solar cell, it is necessary to collect a lower portion of the total sky ener gy. Thi s theory i s app 1 i ed to sever a 1 stat i c concentrators, indicating the extent of which their performance approaches the established limits. Some of them are far from the limit of concentration due to their 1i near structure. It i s conc1uded that concentrators of 1inear structure have a particu1ar upper 1imit of concentration lower than the general one, and that cylindrical CPCs almost reach this particular upper limit. (Author) Source of Abst ract (Subfile): AIAA/TIS Keywords: *C0NCENTRAT0RS; *FERMAT PRINCIPLE; *INS0LATI0N; ♦RADIANCE; ♦RADIATION DISTRIBUTION; ♦SOLAR COLLECTORS; PERFORMANCE PREDICTION; SOLAR ENERGY CONVERSION Subject Classification: 7544 Energy Production & Conversion (1975-) Frequency characteristics of systems with periodically varying parameters. Chastotnye kharakteristiki sistem s periodicheski izmeniaiushchimisia parametrami.
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