Investigating of Fluid Flow and Heat Transfer of MWCNT-Fe3O4 Hybrid Nanofluid Inside the Integrated Solar Collector Storage

Document Type : Mechanics article

Author

School of Engineering, Damghan University, Damghan, Iran; P.O. Box: 3671641167

Abstract

The need for clean energy in today's world is increasing day by day due to the limited nature of fossil resources. Solar energy can be utilized in various domestic, agricultural, and industrial applications. Integrated solar storage collectors are extensively used for generating heat by absorbing solar energy and converting it into thermal energy. Therefore, there is a significant need to design and produce these collectors to achieve the highest performance and efficiency. In this research, considering a type of integrated solar storage collector and using the hybrid nanofluid MWCNT-Fe3O4, its effect at different Rayleigh numbers (103-106) and various nanofluid percentages (0-0.003) has been investigated. Velocity and temperature contours and streamlines in different positions of the hot absorber inside the collector have been examined. The local and average Nusselt numbers have also been studied. The results indicate an increase in the heat transfer rate at high Rayleigh numbers and high nanofluid percentages. Additionally, the optimal position for placing the hot absorber is at the far right end of the collector. The results of this research are published for the first time and can be used for designing solar collectors.

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Articles in Press, Accepted Manuscript
Available Online from 02 September 2025
  • Receive Date: 06 August 2024
  • Revise Date: 05 April 2025
  • Accept Date: 12 May 2025