Influence of hybrid nanofluids on the performance of parabolic trough collectors in solar thermal systems: Recent findings and numerical comparison

Minea, Alina Adriana; El‐Maghlany, Wael M.

doi:10.1016/j.renene.2017.12.093

Cited by 160 publications

(37 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, using this technology in solar applications whether numerically or experimentally is extremely rare. This is due to the difficulty of describing numerically the thermal properties of hybrid nanofluids and implementing this technology in the realistic systems (Minea et al). The thermo‐physical properties of hybrid nanofluids are discussed deeply in Babar and Ali .…”

Section: Thermal Performance Improvement By Adding Nanoparticlesmentioning

confidence: 99%

“…Results showed that the thermal efficiency was enhanced by 0.073% and 0.077% when using OLE‐TiO 2 and BH‐SiO 2 , respectively, with increasing in heat transfer coefficient by 128% and 138%. Other types of hybrid nanofluids (Ag + MgO), (Al 2 O 3 + Cu), and (GO + Co 3 O 4 ) have been numerically investigated by Minea et al with both single base fluid (water, EG) and hybrid base fluid (water + EG) in the laminar flow regime. The authors reported an increase in the convection heat transfer coefficient between 115% and 125% when using (GO + Co 3 O 4 ) and base fluid of (water + EG).…”

Section: Thermal Performance Improvement By Adding Nanoparticlesmentioning

confidence: 99%

See 1 more Smart Citation

An extensive review of various technologies for enhancing the thermal and optical performances of parabolic trough collectors

Abed

Afgan

2020

Int J Energy Res

View full text Add to dashboard Cite

A wide range of engineering industrial applications require both the thermal and optical efficiencies of the system to be maximized with a reasonable low penalty for the friction factor and subsequently low losses in pressure. Among the family of concentrated solar power systems, parabolic trough collectors (PTCs), which have recently received significant attention, face similar challenges. The current work presents an extensive review of the PTC systems comparing recent and past technologies, which are widely being used to improve and enhance the thermal and optical efficiencies. Furthermore, the techniques used for single and two-phase flow modeling in numerical simulations, design variables, and experimental processes have been discussed in detail. The article also presents different numerical methods and analytical approaches of implementing the nonuniform solar distribution with different design parameters. Four main technologies are comprehensively addressed to effectively enhance the thermal performance of the PTCs; changing working heat transfer fluids, replacing the working fluids by nanofluids (single and hybrid) that have higher thermal-physical properties than those of base working fluids, inserting different tabulators with various design configurations, and finally combining the advantages of nanofluids and swirl generators in the same application. The article also critically summarizes the studies investigating the enhancement of thermal performance: use of novel design of PTCs and passive heat transfer enhancement techniques. Finally, a wide range of numerical and experimental studies are proposed for the future work related to the aforementioned main technologies. K E Y W O R D Sheat transfer enhancements, nanofluids, parabolic trough solar collectors, solar thermal energy, tabulators, thermal and optical performances

show abstract

Section: Thermal Performance Improvement By Adding Nanoparticlesmentioning

confidence: 99%

Section: Thermal Performance Improvement By Adding Nanoparticlesmentioning

confidence: 99%

An extensive review of various technologies for enhancing the thermal and optical performances of parabolic trough collectors

Abed

Afgan

2020

Int J Energy Res

View full text Add to dashboard Cite

show abstract

“…28 According to the comparison of the effect of using different mentioned nanofluids in our research, previous general correlations that mentioned in this section were used to define the thermal properties of those modified fluids, (23) regarding its ability to predict a reasonable result, and the nonexistence of special correlations to cover oil under high temperature range. Finally, the examined used nanoparticles' thermal properties through this research were obtained from the literature as shown in Table 4 [32,34].…”

Section: Mono and Hybrid Nanofluids Specificationsmentioning

confidence: 99%

“…The output of simulation was developed using Engineering Equation Solver Software and based on the different correlation from the literature which showed enhancement in the thermal efficiency by 1.8% compared with mono nanofluids which showed only 0.7% [31]. Minea and Maghlany [32] reported the main heat transfer performance enhancement generated from mono and HNF in different applications. In addition, they explained deeply the main research findings of new nanofluid mixing type "HNF" in several aspects such as thermal conductivity, viscosity, Nusselt number, and the main correlations that covered the results which depend on various conditions for different literature surveys like concentration and temperature.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, they explained deeply the main research findings of new nanofluid mixing type "HNF" in several aspects such as thermal conductivity, viscosity, Nusselt number, and the main correlations that covered the results which depend on various conditions for different literature surveys like concentration and temperature. Finally, the authors exhibited the simulation results of Nusselt number and thermal efficiency in a PTC application under laminar flow regime for the HNF of Ag-MgO (with water) and GO/Co 3 O 4 (with binary base fluid consist of 60% EG and 40% water) under volume concentration 2% and 0.15, respectively, for both HNF [32].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Exergy and energy amelioration for parabolic trough collector using mono and hybrid nanofluids

Al–Oran

Lezsovits

Aljawabrah

2020

J Therm Anal Calorim

View full text Add to dashboard Cite

Energy and exergy efficiency amelioration of the parabolic trough has taken high interest since recent years, especially when nanofluid used as an enhancement category. This paper aimed to improve LS-2 parabolic trough model and compare the enhancement effect that occurred using different mono and hybrid nanofluids. Inserting mono nanoparticles of Al 2 O 3 , CeO 2 , CuO, and hybrid combinations of Al 2 O 3 with CeO 2 , or CuO nanoparticles in a Syltherm 800 was investigated by five different cases. The investigation was presented under total volume fraction 4% for all nanofluids and mixing fraction 50:50 for the hybrid types in order to facilitate the analysis and compare various results at the same conditions. Those cases and their comparisons were solved using MATLAB Symbolic tools under turbulent flow regime and variable inlet temperature to present wide domain behavior for the energy and exergy efficiency, Nusselt number, heat transfer coefficient, and pressure drop, whereas the analytical solution of the energy balance equation was taken from the literature and improved to cover the mentioned cases. Moreover, the results were compared with previous researches that used different thermal fluid and showed high accuracy behavior with low deviation. Therefore, the findings showed that Al 2 O 3 and CeO 2 hybrid nanofluids were more efficient than using of both Al 2 O 3 and CuO hybrid nanofluids and any mono nanofluids contain the same nanoparticles. The maximum enhancement of thermal and exergy efficiency of using Al 2 O 3 and CeO 2 hybrid nanofluids was 1.09% and 1.03%, respectively, whereas it was enhanced by 167.8% and 200.7% for the Nusselt number and heat transfer coefficient, respectively. Also, the hybrid nanofluids have higher advantage over the mono nanofluids by presenting lower pressure drop values. Finally, the assessment of efficiency variation affected by thermal properties of the nanoparticle was presented under optimum temperature equal to 575 K.

show abstract

Recent Advances in the Simulation of Solar Photovoltaic Cell Cooling Systems Using Nanofluids

Mohammadpour

Salehi

2023

Nanotechnology Applications for Solar Energy Systems

View full text Add to dashboard Cite

Influence of hybrid nanofluids on the performance of parabolic trough collectors in solar thermal systems: Recent findings and numerical comparison

Cited by 160 publications

References 80 publications

An extensive review of various technologies for enhancing the thermal and optical performances of parabolic trough collectors

An extensive review of various technologies for enhancing the thermal and optical performances of parabolic trough collectors

Exergy and energy amelioration for parabolic trough collector using mono and hybrid nanofluids

Recent Advances in the Simulation of Solar Photovoltaic Cell Cooling Systems Using Nanofluids

Contact Info

Product

Resources

About