Conference paper Open Access

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

Fritz Zaversky; Marcelino Sánchez; M. Isabel Roldán; Antonio L. Ávila-Marín; Alexander Füssel; Jörg Adler; Martin Knoch; Andreas Dreitz


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    <dct:title>Experimental evaluation of volumetric solar absorbers – Ceramic foam vs. an innovative rotary disc absorber concept</dct:title>
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    <dct:description>&lt;p&gt;This paper presents the experimental evaluation of two volumetric solar absorber concepts. It compares the&lt;br&gt; thermal performance of conventional foam absorbers with that of an innovative rotary disc absorber design. The moving&lt;br&gt; absorber showed advantages regarding air temperature stability at the outlet and better operability compared to the foam&lt;br&gt; absorber. Unfortunately, it is shown that the innovative rotary disc design in its present form is not competitive, neither in&lt;br&gt; terms of thermal performance, nor regarding mechanical reliability and robustness. The future task is therefore to&lt;br&gt; optimize the mechanical design regarding thermal fatigue, in order to obtain a robust and durable rotary absorber that can&lt;br&gt; be thoroughly evaluated experimentally.&lt;/p&gt;</dct:description>
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