Thermal analysis of a finned receiver for a central tower solar system

A. Piña-Ortiz, J.F. Hinojosa, R.A. Pérez-Enciso, V.M. Maytorena, R.A. Calleja and C.A. Estrada

Renewable Energy, 2019, vol. 131, issue C, 1002-1012

Abstract: In this study, a thermal analysis of a finned receiver prototype for a thermosolar tower system is presented. The experimental system consists of parallelepiped aluminum enclosure of 1.2 m high, 1.23 m wide and 0.1 m depth. At the interior, 1232 cylindrical fins with a diameter of 0.0095 m (3/8″) and 0.09 m length increases the heat transfer area up to 225%. The vertical wall receives the incoming solar concentrated radiation from a group of heliostats whilst at the interior a constant flow of water removes the absorbed energy. Experimental temperature profiles were obtained at different heights and depths and a comparison was made with numerical results obtained with the use of commercial CFD software. It was found that the maximum thermal efficiency of the receiver was 94.4%, decreasing as the radiative flux increases.

Keywords: Heat transfer; Thermal receiver; Concentrated radiation; Solar tower system (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:131:y:2019:i:c:p:1002-1012

DOI: 10.1016/j.renene.2018.07.123

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