Hybrid Nanofluid in a Direct Absorption Solar Collector: Magnetite vs. Carbon Nanotubes Compete for Thermal Performance

Pavel G. Struchalin, Dmitrii M. Kuzmenkov, Vladimir S. Yunin, Xinzhi Wang, Yurong He and Boris V. Balakin
Additional contact information
Pavel G. Struchalin: Department of Mechanical and Marine Engineering, Western Norway University of Applied Sciences, Inndalsveien 28, 5063 Bergen, Norway
Dmitrii M. Kuzmenkov: Institute of Nuclear Physics and Engineering, National Research Nuclear University “Moscow Engineering Physics Institute”, Kashirskoe Highway 31, 115409 Moscow, Russia
Vladimir S. Yunin: Institute of Nuclear Physics and Engineering, National Research Nuclear University “Moscow Engineering Physics Institute”, Kashirskoe Highway 31, 115409 Moscow, Russia
Xinzhi Wang: Heilongjiang Key Laboratory of New Energy Storage Materials and Processes, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Yurong He: Heilongjiang Key Laboratory of New Energy Storage Materials and Processes, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Boris V. Balakin: Department of Mechanical and Marine Engineering, Western Norway University of Applied Sciences, Inndalsveien 28, 5063 Bergen, Norway

Energies, 2022, vol. 15, issue 5, 1-8

Abstract: The paper presents the experimental measurements of thermal efficiency of a tubular direct absorption solar collector (DASC) with a hybrid nanofluid based on magnetite (Fe 3 O 4 ) and multi-walled carbon nanotubes (MWCNT). The volumetric concentration of Fe 3 O 4 and MWCNT was 0.0053% and 0.0045%, respectively. The experiments were carried out for the flow rates of 2–10 L/min and a temperature difference up to 20 ∘ C between the environment and the DASC. The performance of the DASC with a hybrid nanofluid was in the range of 52.3–69.4%, which was just beyond the performance of the collector with surface absorption. It was also found that using a MWCNT-based nanofluid with an equivalent total volumetric concentration of particles (0.0091%), the efficiency was 8.3–31.5% higher than for the cases with the hybrid nanofluid.

Keywords: direct absorption solar collector; hybrid nanofluid; carbon nanotubes; magnetic nanofluid; iron oxide (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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