Performance Evaluation of Carbon-Based Nanofluids for Direct Absorption Solar Collector

In this study, carbon-based nanofluids (CBNFs) were prepared using a revised vortex trap method and applied in the direct absorption solar collector (DASC) to evaluate the feasibility of CBNFs in DASC. The thermal storage performance of water and different concentrations of CBNFs (0.01, 0.025 and 0....

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Bibliographic Details
Published in:Energies (Basel) 2023-01, Vol.16 (3), p.1157
Main Authors: Yu, Shang-Pang, Teng, Tun-Ping, Huang, Chia-Cing, Hsieh, Hsiang-Kai, Wei, Yi-Jia
Format: Article
Language:English
Subjects:
Absorption
Alternative energy sources
Ambient temperature
Analysis
Carbon
Carbon compounds
carbon-based nanofluids (CBNFs)
Climate change
Design and construction
direct absorption solar collector (DASC)
Efficiency
Electric rates
Flow rates
Flow velocity
Fluids
Graphene
Heat storage
Heat transfer
Heating rate
Light sources
Magnetic fields
Materials
Nanofluids
Nanomaterials
Nanoparticles
Particle size
Performance evaluation
Renewable resources
Solar collectors
Spectrum analysis
Storage capacity
system efficiency factor (SEF)
Thermal energy
Thermal storage
thermal storage capacity
Working fluids
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Summary:In this study, carbon-based nanofluids (CBNFs) were prepared using a revised vortex trap method and applied in the direct absorption solar collector (DASC) to evaluate the feasibility of CBNFs in DASC. The thermal storage performance of water and different concentrations of CBNFs (0.01, 0.025 and 0.05 wt%) was assessed with a 1000 W halogen lamp as a simulated light source under different volumetric flow rates (1.5, 3.0, and 4.5 L per minute [LPM]) at a constant thermal storage load (2.4 kg of water) and ambient temperature of 26 °C. The thermal storage capacity, system efficiency factor (SEF), and heating rate of the CBNFs as the working fluid were higher than those of water in most cases. The thermal storage capacity and SEF of 0.05 wt% CBNF at a volumetric flow rate of 3.0 LPM were 10.36% and 9.36% higher than that of water, respectively. The relevant experimental results demonstrate the great potential of CBNFs in DASC.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16031157