Thermal efficiency improvement of parabolic trough solar collector using different kinds of hybrid nanofluids
Por:
Ajbar, Wassila, Hernandez, J. A., Parrales, A., Torres, Lizeth
Publicada:
1 feb 2023
Ahead of Print:
1 ene 2023
Resumen:
In this paper, the use of eight hybrid nanofluids to improve the thermal
efficiency of a parabolic trough solar collector (PTSC) is investigated.
The analysis is performed with the thermal model developed and validated
with Sandia National Laboratory's experimental data using pure Syltherm
800. The developed model results prove a good agreement with the
experimental study with an average error of 1.92% and 2.34% to
calculate the outlet temperature and thermal efficiency. The simulation
results showed that PTSC thermal efficiency could achieve its maximum
improvement of 2.8% using hybrid nanofluids evaluated and an average
improvement of PTSC thermal efficiency of 1.6% under the operating
conditions of the examined tests compared to Syltherm 800. All hybrid
nanofluids achieve a better PTSC's thermal efficiency than the base
fluid, and the difference between them is insignificant due to keeping
the total concentration constant (phi= 3%) for all of them. This
improvement of PTSC's thermal efficiency using hybrid nanofluid is
explained by the most significant increase and improvement of heat
transfer coefficient and Nusselt number compared to pure Syltherm 800.
This paper is beneficial to researchers focused on applying and
improving the PTSC's thermal performance based on the improvement of
heat transfer fluids.
Filiaciones:
Ajbar, Wassila:
Instituto de Ingeniería, Universidad Nacional Autónoma de México, Coyoacán, México City, 04510, Mexico
Hernandez, J. A.:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Morelos, Cuernavaca, C.P. 62209, Mexico
Parrales, A.:
CONACyT - Centro de Investigacion en Ingeniería y Ciencias Aplicadas, Universidad Autónoma Del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Morelos, Cuernavaca, C.P. 62209, Mexico
Torres, Lizeth:
Instituto de Ingeniería, Universidad Nacional Autónoma de México, Coyoacán, México City, 04510, Mexico
gold, All Open Access; Gold
|