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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    <subfield code="c">2018-11-08</subfield>
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    <subfield code="d">26–29 September 2017</subfield>
    <subfield code="a">SolarPACES</subfield>
    <subfield code="c">Santiago, Chile</subfield>
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    <subfield code="a">&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;</subfield>
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    <subfield code="a">Marcelino Sánchez</subfield>
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