Volume 46, Issue 4 pp. 4908-4918
RESEARCH ARTICLE

Enhanced thermophysical properties in spinel CuFe2O4-based nanofluids for concentrated solar power

Teresa Aguilar

Corresponding Author

Teresa Aguilar

Departamento de Química Física, Facultad de Ciencias, Universidad de Cádiz, Cádiz, Spain

Correspondence

Teresa Aguilar and Javier Navas, Departamento de Química Física, Facultad de Ciencias, Universidad de Cádiz, Cádiz, Spain.

Email: [email protected] (T. S.), [email protected] (J. N.)

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Iván Carrillo-Berdugo

Iván Carrillo-Berdugo

Departamento de Química Física, Facultad de Ciencias, Universidad de Cádiz, Cádiz, Spain

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Rodrigo Alcántara

Rodrigo Alcántara

Departamento de Química Física, Facultad de Ciencias, Universidad de Cádiz, Cádiz, Spain

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Javier Navas

Corresponding Author

Javier Navas

Departamento de Química Física, Facultad de Ciencias, Universidad de Cádiz, Cádiz, Spain

Correspondence

Teresa Aguilar and Javier Navas, Departamento de Química Física, Facultad de Ciencias, Universidad de Cádiz, Cádiz, Spain.

Email: [email protected] (T. S.), [email protected] (J. N.)

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First published: 21 November 2021
Citations: 2

Funding information: Agencia de Innovación y Desarrollo de Andalucía, Grant/Award Number: FEDER-UCA18-107510; Ministerio de Ciencia e Innovación, Grant/Award Numbers: RTI2018-096393-B-I00, UNCA15-CE-2945; Ministerio de Universidades, Grant/Award Number: FPU16/02425

Summary

Concentrating solar power (CSP) technology has been recognized as a technology with high potential to reduce greenhouse gas emission and to transform the electric generation system towards zero emissions. But, the energy conversion between solar to electric energy should be improved, and for this, the use of higher efficient heat transfer fluid (HTF) is one of the main challenges to reach. Then, a promising strategy is the use of nanofluids as HTF in CSP plants. Thus, in this work, CuFe2O4-based nanofluids have been tested in the main properties, such as long-term stability, and rheological and thermal properties. The results showed that the nanofluids reached the physical and chemical stability. Additionally, at 363 K, the relative thermal conductivity of the nanofluids was improved by up to 68.5% in the case of the nanofluid with the highest concentration of both nanoparticles and surfactant. Finally, the efficiency of these nanofluids was analysed considering the possible application in CSP plants. An enhancement of up to 35% in efficiency was found.

DATA AVAILABILITY STATEMENT

Data available on request from the authors.

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