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Linear Fresnel Collector Receiver: Heat Loss and Temperatures

Heimsath, A.; Cuevas, F.; Hofer, A.; Nitz, P.; Platzer, W. J.


For design and component specification of a Linear Fresnel Collector (LFC) cavity receiver, the prediction of temperature distribution and heat loss is of great importance. In this paper we present a sensitivity analysis for a range of geometry and material parameters. For the LFC receiver analysis we use two models developed at Fraunhofer ISE. One is a detailed model, combining the spatial distribution of reflected radiation via ray tracing with detailed convective simulations through computational fluid dynamics. The second one is a fast algorithm based on a thermal resistance model. It is applying a similar methodology as the well-known model for vacuum absorber, enhancing an absorber tube model by parameters describing the influence of the secondary mirror and cover glass. The thermal resistance model is described in detail. Obtained results indicate a significant effect of the secondary mirror temperature on heat loss for specific geometries.

Verlagsausgabe §
DOI: 10.5445/IR/1000138380
Veröffentlicht am 30.09.2021
DOI: 10.1016/j.egypro.2014.03.042
Zitationen: 38
Zitationen: 38
Cover der Publikation
Zugehörige Institution(en) am KIT Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2014
Sprache Englisch
Identifikator ISSN: 1876-6102
KITopen-ID: 1000138380
Erschienen in Energy procedia
Verlag Elsevier
Band 49
Seiten 386–397
Schlagwörter Linear Fresnel collector; cavity receiver; heat loss; thermal model
Nachgewiesen in Dimensions
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