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Thermal effectiveness of solar collector using Graphene nanostructures suspended in ethylene glycol–water mixtures

Al-Sulttani, Ali Omran ; Aldlemy, Mohammed Suleman ; Zahra, Musaddak M.Abdul ; Gatea, Hamed A. ; Khedher, Khaled Mohamed ; Scholz, Miklas LU and Yaseen, Zaher Mundher (2022) In Energy Reports 8. p.1867-1882
Abstract

Flat plate solar collectors (FPSCs) are the most often used as solar collectors due to their easiness of installation and usage. The current research investigates the energy efficiency of FPSC using different mass concentration with varied base fluids containing Graphene nanofluids (T-Gr). Mass concentration of 0.1%-wt., 0.075%-wt., 0.050%-wt. and 0.025%-wt. were mixed with ethylene glycol (EG) and distilled water (DW) in different rations. The operating conditions were volumetric flowrate (1.5, 1 and 0.5) LPM 50 °C-input fluid temperature and 800 W/m2-global solar irradiation. Scanning electron microscope (SEM) and energy dispersive X-ray (EDX) were used to synthesize the thermally treated nanomaterial. The theoretical... (More)

Flat plate solar collectors (FPSCs) are the most often used as solar collectors due to their easiness of installation and usage. The current research investigates the energy efficiency of FPSC using different mass concentration with varied base fluids containing Graphene nanofluids (T-Gr). Mass concentration of 0.1%-wt., 0.075%-wt., 0.050%-wt. and 0.025%-wt. were mixed with ethylene glycol (EG) and distilled water (DW) in different rations. The operating conditions were volumetric flowrate (1.5, 1 and 0.5) LPM 50 °C-input fluid temperature and 800 W/m2-global solar irradiation. Scanning electron microscope (SEM) and energy dispersive X-ray (EDX) were used to synthesize the thermally treated nanomaterial. The theoretical investigation indicated that using T-Gr nanosuspensions increased the FPSC efficiency in comparison with the host fluid for all examined mass concentrations and volumetric flowrates. In quantitative terms, the maximum thermal effectiveness improvement for the EG, (DW:70 + EG:30) and DW:EG (DW:50 + EG:50) and using flowrates of (1.5, 1 and 0.5) LPM were 12.54%, 12.46% and 12.48%. In addition, the research results pointed that the essential parameters (i.e., loss energy (FRUL)) and gain energy (FR (τα)) of the T-Gr nanofluids were increased significantly.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Base fluids, Flat-plate solar collector, Graphene, Nanofluids, Thermal performance
in
Energy Reports
volume
8
pages
16 pages
publisher
Elsevier
external identifiers
  • scopus:85123189649
ISSN
2352-4847
DOI
10.1016/j.egyr.2022.01.007
language
English
LU publication?
yes
id
9df7d2c4-2e48-4c96-99ac-c8aed35edd8e
date added to LUP
2022-03-15 15:44:47
date last changed
2022-04-23 18:15:20
@article{9df7d2c4-2e48-4c96-99ac-c8aed35edd8e,
  abstract     = {{<p>Flat plate solar collectors (FPSCs) are the most often used as solar collectors due to their easiness of installation and usage. The current research investigates the energy efficiency of FPSC using different mass concentration with varied base fluids containing Graphene nanofluids (T-Gr). Mass concentration of 0.1%-wt., 0.075%-wt., 0.050%-wt. and 0.025%-wt. were mixed with ethylene glycol (EG) and distilled water (DW) in different rations. The operating conditions were volumetric flowrate (1.5, 1 and 0.5) LPM 50 °C-input fluid temperature and 800 W/m<sup>2</sup>-global solar irradiation. Scanning electron microscope (SEM) and energy dispersive X-ray (EDX) were used to synthesize the thermally treated nanomaterial. The theoretical investigation indicated that using T-Gr nanosuspensions increased the FPSC efficiency in comparison with the host fluid for all examined mass concentrations and volumetric flowrates. In quantitative terms, the maximum thermal effectiveness improvement for the EG, (DW:70 + EG:30) and DW:EG (DW:50 + EG:50) and using flowrates of (1.5, 1 and 0.5) LPM were 12.54%, 12.46% and 12.48%. In addition, the research results pointed that the essential parameters (i.e., loss energy (F<sub>R</sub>U<sub>L</sub>)) and gain energy (F<sub>R</sub> (τα)) of the T-Gr nanofluids were increased significantly.</p>}},
  author       = {{Al-Sulttani, Ali Omran and Aldlemy, Mohammed Suleman and Zahra, Musaddak M.Abdul and Gatea, Hamed A. and Khedher, Khaled Mohamed and Scholz, Miklas and Yaseen, Zaher Mundher}},
  issn         = {{2352-4847}},
  keywords     = {{Base fluids; Flat-plate solar collector; Graphene; Nanofluids; Thermal performance}},
  language     = {{eng}},
  pages        = {{1867--1882}},
  publisher    = {{Elsevier}},
  series       = {{Energy Reports}},
  title        = {{Thermal effectiveness of solar collector using Graphene nanostructures suspended in ethylene glycol–water mixtures}},
  url          = {{http://dx.doi.org/10.1016/j.egyr.2022.01.007}},
  doi          = {{10.1016/j.egyr.2022.01.007}},
  volume       = {{8}},
  year         = {{2022}},
}