Thermal performance evaluation of parabolic trough collector having different inserts and working with hybrid nanofluid

Oveepsa Chakraborty, Biplab Das and Rajat Gupta

Energy & Environment, 2024, vol. 35, issue 6, 3010-3037

Abstract: This study emphasizes the comparative investigation of the thermal capacity of parabolic solar trough collectors with spherical-shaped balls and two types of elliptical inserts (longitudinal orientation). Hybrid nanofluid is the heat-carrying liquid obtained by mixing CuO and Al 2 O 3 nanoparticles in distilled water. Analytical investigations are conducted for 1% vol. concentration of hybrid nanoparticles in distilled water for varying proportions. Computational analysis is chosen to obtain thermal as well as flow trends in the tube receiver. The outcomes disclosed that 13.3%, 10.02%, and 16% improvements are noted for thermal efficiency, Nusselt number, and thermal performance index with elliptical inserts of minor diameter 12 mm in the receiver, respectively, than spherical ball inserts. The highest pump work of 35 W is associated with spherical inserts at 0.033 kg/s.

Keywords: Receiver tube; spherical balls; elliptical structure; nanofluid; thermal efficiency; Nusselt number (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:sae:engenv:v:35:y:2024:i:6:p:3010-3037

DOI: 10.1177/0958305X231156407

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