Application of Nanofluids in Thermal Performance Enhancement of Parabolic Trough Solar Collector: State-of-the-Art

The present review paper aims to document the latest developments on the applications of nanofluids as working fluid in parabolic trough collectors (PTCs). The influence of many factors such as nanoparticles and base fluid type as well as volume fraction and size of nanoparticles on the performance...

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Bibliographic Details
Published in:Applied sciences 2019-01, Vol.9 (3), p.463
Main Authors: Olia, Hamed, Torabi, Mohammadamin, Bahiraei, Mehdi, Ahmadi, Mohammad Hossein, Goodarzi, Marjan, Safaei, Mohammad Reza
Format: Article
Language:English
Subjects:
Alternative energy sources
Computational fluid dynamics
Computer applications
Convection
Efficiency
entropy generation
Exergy
exergy analysis
Flow rates
Fluid dynamics
Fluids
Heat conductivity
Heat transfer
Heat transfer coefficients
Hydrodynamics
Mass flow rate
Mechanical engineering
nanofluid
Nanofluids
Nanoparticles
Optimization
parabolic trough solar collectors
Photovoltaic cells
Pressure
Pressure drop
Renewable resources
Solar collectors
Solar energy
Sun
Thermodynamic efficiency
thermodynamic performance
Working fluids
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Summary:The present review paper aims to document the latest developments on the applications of nanofluids as working fluid in parabolic trough collectors (PTCs). The influence of many factors such as nanoparticles and base fluid type as well as volume fraction and size of nanoparticles on the performance of PTCs has been investigated. The reviewed studies were mainly categorized into three different types of experimental, modeling (semi-analytical), and computational fluid dynamics (CFD). The main focus was to evaluate the effect of nanofluids on thermal efficiency, entropy generation, heat transfer coefficient enhancement, as well as pressure drop in PTCs. It was revealed that nanofluids not only enhance (in most of the cases) the thermal efficiency, convection heat transfer coefficient, and exergy efficiency of the system but also can decrease the entropy generation of the system. The only drawback in application of nanofluids in PTCs was found to be pressure drop increase that can be controlled by optimization in nanoparticles volume fraction and mass flow rate.
ISSN:2076-3417
2076-3417
DOI:10.3390/app9030463