Experimental results of gradual porosity volumetric air receivers with wire meshes

Antonio L. Avila-Marin, Monica Alvarez de Lara and Jesus Fernandez-Reche

Renewable Energy, 2018, vol. 122, issue C, 339-353

Abstract: Central Receiver Systems with volumetric receiver technology has emerged as a scheme that could increase receiver and power block efficiencies. Among other choices, volumetric receivers made of metallic wire meshes are a promising technology that allows different designs and configurations. This paper details experimental work carried out on gradual porosity absorbers with the aim of promoting the basic principle of volumetric absorbers. In order to draw preliminary conclusions on the technology, a new lab-scale test bed of 1 kW was designed and used. As the absorber material, six commercial metallic wire mesh screens, of 310-alloy, with different geometrical and optical properties were selected with the constraint of finding pairs with similar porosities and different mesh properties. The thickness of each absorber was optimized in order to reduce the material needed to achieve complete absorption of the incident radiation. Moreover, pieces of two reference absorbers -TSA and SOLAIR-were tested. The concept shows potential for improving, or at least matching, the performance of the baseline absorbers (TSA and SOLAIR).

Keywords: Metallic absorber; Volumetric receivers; Central receiver system; Gradual porosity; Experimental setup; Absorber thickness (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (16)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:122:y:2018:i:c:p:339-353

DOI: 10.1016/j.renene.2018.01.073

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