Direct absorption solar collector with magnetic nanofluid: CFD model and parametric analysis

Boris V. Balakin, Oleg V. Zhdaneev, Anna Kosinska and Kirill V. Kutsenko

Renewable Energy, 2019, vol. 136, issue C, 23-32

Abstract: Direct absorption collectors (DAC) with nanofluid are among the most promising yet least studied in solar energy technology. There are numerous micro- and macroscopic factors that determine their efficiency. This complicates in situ optimization of DACs using physical prototypes. The present paper describes a multiphase CFD model of the collector, which was validated against two independent experimental datasets. The model was used for a multiparametric numerical analysis, where we altered concentration and size of the nanoparticles, as well as the geometry and inclination of the collector. The optimization resulted in up to 10% improvement in the collector's efficiency. Finally, we considered the process of thermomagnetic convection in the collector using a magnetic nanofluid. This resulted in a 30% increase in the collector performance.

Keywords: Direct absorption collector; CFD; Multiphase; Nanofluid; Thermomagnetic convection (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:136:y:2019:i:c:p:23-32

DOI: 10.1016/j.renene.2018.12.095

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