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Titolo: LOSSES IN A 3DIMENSIONAL COMPOUND PARABOLIC CONCENTRATOR AS A 2ND STAGE OF A SOLAR CONCENTRATOR
Autore: YEHEZKEL N; APPELBAUM J; YOGEV A; ORON M;
 Indirizzi:
 TEL AVIV UNIV,FAC ENGN IL69978 TEL AVIV ISRAEL WEIZMANN INST SCI IL76100 REHOVOT ISRAEL SOREQ NUCL RES CTR IL70600 YAVNE ISRAEL
 Titolo Testata:
 Solar energy
fascicolo: 1,
volume: 51,
anno: 1993,
pagine: 45  51
 SICI:
 0038092X(1993)51:1<45:LIA3CP>2.0.ZU;20
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 SECONDARY CONCENTRATOR;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Science Citation Index Expanded
 Citazioni:
 9
 Recensione:
 Indirizzi per estratti:



 Citazione:
 N. Yehezkel et al., "LOSSES IN A 3DIMENSIONAL COMPOUND PARABOLIC CONCENTRATOR AS A 2ND STAGE OF A SOLAR CONCENTRATOR", Solar energy, 51(1), 1993, pp. 4551
Abstract
In this article, the losses due to reflection properties in a threedimensional compound parabolic concentrator (3D C.P.C.) are calculatedand the effect of these losses on the concentration is analyzed. The 3D C.P.C. is used as a second stage in two configurations of a twostage concentrator: (a) a parabolic dish as a first stage, and (b) a Cassegrainian as a first stage. The nonplanar rays play an important rolein 3D C.P.C. losses. Thus, a raytracing procedure is needed to evaluate the losses. In this study, a rigorous threedimensional ray tracing program was specially developed. The reflection losses and their effect on the concentration were determined from the reflection distribution derived by the developed raytracing program. As a result, the reflection losses were approximated by a simple empirical linear model useful in practical ranges of the 3D C.P.C. acceptance angles and reflectivities. This model facilitates design and system optimization by analytical methods without resorting to a raytracing procedure. The approach presented in this article may be used to compare the performance of the twosystem configurations. taking into account the 3D C.P.C.losses.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/10/20 alle ore 10:27:18