Experimental evaluation of volumetric solar absorbers – Ceramic foam vs. an innovative rotary disc absorber concept

Autor: Marcelino Sánchez, M. Isabel Roldán, Antonio L. Avila-Marin, Fritz Zaversky, Alexander Füssel, Jörg Adler, Martin Knoch, Andreas Dreitz
Rok vydání: 2018
Předmět:
Zdroj: AIP Conference Proceedings volume 2033
ISSN: 0094-243X
DOI: 10.1063/1.5067080
Popis: This paper presents the experimental evaluation of two volumetric solar absorber concepts. It compares the thermal performance of conventional foam absorbers with that of an innovative rotary disc absorber design. The moving absorber showed advantages regarding air temperature stability at the outlet and better operability compared to the foam absorber. Unfortunately, it is shown that the innovative rotary disc design in its present form is not competitive, neither in terms of thermal performance, nor regarding mechanical reliability and robustness. The future task is therefore to optimize the mechanical design regarding thermal fatigue, in order to obtain a robust and durable rotary absorber that can be thoroughly evaluated experimentally.
Databáze: OpenAIRE
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