Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
LOSSES IN A 3-DIMENSIONAL 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 IL-69978 TEL AVIV ISRAEL WEIZMANN INST SCI IL-76100 REHOVOT ISRAEL SOREQ NUCL RES CTR IL-70600 YAVNE ISRAEL
Titolo Testata:
Solar energy
fascicolo: 1, volume: 51, anno: 1993,
pagine: 45 - 51
SICI:
0038-092X(1993)51:1<45:LIA3CP>2.0.ZU;2-0
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 3-DIMENSIONAL COMPOUND PARABOLIC CONCENTRATOR AS A 2ND STAGE OF A SOLAR CONCENTRATOR", Solar energy, 51(1), 1993, pp. 45-51

Abstract

In this article, the losses due to reflection properties in a three-dimensional compound parabolic concentrator (3-D C.P.C.) are calculatedand the effect of these losses on the concentration is analyzed. The 3-D C.P.C. is used as a second stage in two configurations of a two-stage concentrator: (a) a parabolic dish as a first stage, and (b) a Cassegrainian as a first stage. The nonplanar rays play an important rolein 3-D C.P.C. losses. Thus, a ray-tracing procedure is needed to evaluate the losses. In this study, a rigorous three-dimensional 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 ray-tracing program. As a result, the reflection losses were approximated by a simple empirical linear model useful in practical ranges of the 3-D C.P.C. acceptance angles and reflectivities. This model facilitates design and system optimization by analytical methods without resorting to a ray-tracing procedure. The approach presented in this article may be used to compare the performance of the two-system configurations. taking into account the 3-D 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