Hydrothermal analysis for a parabolic solar unit with wavy absorber pipe and nanofluid

M. Sheikholeslami, Zafar Said and M. Jafaryar

Renewable Energy, 2022, vol. 188, issue C, 922-932

Abstract: Parabolic system is regarded as a highly advanced solar technology. In this regard, the numerical simulation for thermal analysis of PTC with a wavy absorber pipe employing finite volume method was presented. The new wavy absorber tube within a solar system involving parabolic reflector has been investigated in the current article. Two phase model for a mixture of oil and CuO nanoparticles were applied. To find the amount of received heat to absorber, SolTrace were implemented. Turbulent flow has been simulated via k-ϵ approach. Pitch number (P), Re, and fraction of nano-powder (φ) have been examined. CuO/Oil was utilized as a working fluid. Contours of temperature, velocity, volume concentration, and exergy loss were presented. Increment in Re number from 5000 to 20,000 resulted in the reduction of friction factor by 28.96%, the heat transfer coefficient is improved by 180.13%, when φ=0.01, P=(0.4). As volume concentration elevates, friction factor, h, and outlet temperature were increased by 2.79%, 9.06%, and 0.56%, respectively. With the increment of P from 0 to 0.4, the f is increased by 57.33%, h is enhanced by 17.01% when φ=0.01, Re = 2e4.

Keywords: Friction factor; Exergy drop; Heat transfer coefficient; Nanofluid; Parabolic trough collector; Wavy absorber tube (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:188:y:2022:i:c:p:922-932

DOI: 10.1016/j.renene.2022.02.086

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