Efficiency of the parabolic through solar collector using NiFe2O4/Water nanofluid and U-tube

Dehaj, Mohammad Shafiey; Rezaeian, Mohsen; Mousavi, Davoud; Shamsi, Sajjad; Salarmofrad, Masoud

doi:10.1016/j.jtice.2021.02.029

Cited by 42 publications

(8 citation statements)

References 60 publications

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“…Their numerical results indicated a mean efficiency improvement up to 4.55% than smooth tube geometry because converging tube pushes the flow to be mixed better and gives a more uniform temperature distribution inside the tube. The main aim of studies by (Mohammad, 2021) was to evaluate the efficacy of the U-tube as an absorbent in a parabolic trough solar collector. The experiments were conducted at varying volume flow rates, ranging from 0.5 to 3 L/min.…”

Section: By Changing Shape Of Absorber Tubementioning

confidence: 99%

“…This is significantly higher than the 28% efficiency recorded using pure water. The findings suggest that the thermal efficiency of the parabolic trough solar collector improves with increasing flow rate and volume fraction of the nanofluid (Mohammad, 2021). Table 2 shows the results of study using water as working fluids using absorber with and without U-tube.…”

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confidence: 99%

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Parabolik Oluklu Solar Kollektörlerin Termal Verimliliğinin Artırılması: Genel Bakış

YEŞİLDAL,

ÖZAKIN,

BAAMEL

et al. 2023

Karadeniz Fen Bilimleri Dergisi

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This article examines various methods to enhance the thermal efficiency of parabolic trough solar collectors (PTCs), both theoretically and experimentally. These methods include increasing the surface area of the absorber tube to increase its ability to absorb solar energy, placing a tube inserts inside the tube to induce turbulence and hence improve heat transfer. Among other methods are also minimization of reflection by using selective coatings on the surface of the absorber tube. Additionally, increasing the thermal conductivity of the working fluid, or modifying or altering the shape of the absorber tube or the reflective surface have also been shown to have improved thermal performance by minimizing energy losses due to conduction, convection, and radiation. All these and similar approaches that address and improve system parameters lead to improved efficiency and thermal performance, but they also entail a pressure drop and increase the cost of the system. In this study, the techniques that are used to improve the thermal efficiency of PTCs are addressed and presented in detail along with the findings of previous studies.

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Section: By Changing Shape Of Absorber Tubementioning

confidence: 99%

mentioning

confidence: 99%

Parabolik Oluklu Solar Kollektörlerin Termal Verimliliğinin Artırılması: Genel Bakış

YEŞİLDAL,

ÖZAKIN,

BAAMEL

et al. 2023

Karadeniz Fen Bilimleri Dergisi

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“…Wang and De Leon 12 made an improvement in heat transfer features together with other specific properties by aiming at the new application of nanofluids. Efficiency regarding PTSC was checked by Dehaj et al 13 while engaging u-tube as well as nickel ferrite (NiFe 2 O 4 ) nanofluid, made with a two-step process. Alashkar and Gadalla 14 examined the influence of Ag/Therminol nanofluid on power plant efficiency inside PTSC.…”

Section: Introductionmentioning

confidence: 99%

Chemical reaction and thermal characteristiecs of Maxwell nanofluid flow-through solar collector as a potential solar energy cooling application: A modified Buongiorno's model

Hussain

Jamshed

Safdar

et al. 2022

Energy & Environment

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Solar collectors absorb solar radiation at the focus of solar concentrating systems as heat energy which is further transferred to nanofluid. Entropy creation in Maxwell nanofluid flow over an infinite horizontal surface of a porous media is the subject of the current investigation. A non-linear stretching surface then induces a parabolic trough solar collector (PTSC) flow. The thermal boundary layer is studied using a modified version of Buongiorno's Model. As a result, the PDEs, which encompass the physical aspects of the issue, must be transformed into solvable and boundary-constrained ODEs. By using a proper similarity transformation, boundary conditions and partial differential expressions are reduced to a set of non-linear ordinary differential equations. The Keller box method is used to find approximate solutions to ODEs. Tests are carried out on a nanofluid known as Copper-engine oil (Cu-EO). The Nusselt number was lowered, but the skin friction coefficient was increased as a result of a substantial magnetic parameter. In addition, Reynolds number and Brinkman number are used to measure fluctuations in viscosity, and, as a result, entropy variations throughout the domain are increased. Temperature decreased due to chemical reaction and Schmidt number, while thermal radiation increased skin friction and Nusselt. According to the current analysis, the heat collector has enhanced PTSC with Maxwell nanofluid.

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“…Engineered by Stephen U. S. Choi and Jeffrey A Eastman, 15 they are liquids with exceptional proprieties that make them ideal for heat transfer applications. [16][17][18][19][20] Dehaj et al 21 examined experimentally the working of a parabolic trough solar collector (PTSC) using NiFe 2 O 4 nanofluid and U-tube as an absorbent. Heyhat et al 22 evaluated the improvement in energy efficiency of a direct absorption PTSC by using nanofluid and metal foam.…”

Section: Introductionmentioning

confidence: 99%

Thermal analysis on Darcy‐Forchheimer swirling Casson hybrid nanofluid flow inside parallel plates in parabolic trough solar collector: An application to solar aircraft

Shahzad

Jamshed

Sathyanarayanan

et al. 2021

Intl J of Energy Research

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Summary As a try, this work has been focused in the way towards the effective contribution in the field of solar aviation using renowned nanotechnology. After realizing the causes and effects of traditionally used energy forms, the search of cost‐efficient, eco‐friendly, and most prominent renewable source leads us back to the solar utilities. Research era of solar radiation‐powered aircraft has been in trend. Focusing on that, an efficient numerical model representing the flow and thermal aspects of a parabolic trough surface collector (PTSC) embedded on solar aircraft wings has been adopted for this study. As the first time with the note, an eminent and leading form of thermal efficient fluid of kind, the Casson hybrid nanofluid has been engaged with the expectations of enhanced performance in the solar aircraft wings. To test it, a trending reputable numerical scheme of the Keller‐box method has been utilized and the parametrical studies were carried out. The upshots of those studies provide the affable proofs in favor of our expectations towards the improved solar wings with better thermal efficiency. The glimpse of those successes in the parametrical level has been showcased in the forms of tables and graphs. The lateral “x” direction significant about the inertial forces, suspended particle ratio, and skin resistance phenomena, while for the transverse fluidity in the “y” direction were has to be concern about the magnetic interactions, rotational coordinates, viscous nature of the fluid along with the porous states. The power of hybrid nanofluid combos was exposed in higher notes in a unique state of solar aircraft wings. Furthermore, the thermal efficiency of hybrid nanofluids over nanofluids got down to a minimal level of 6.1% and peaked up to 21.8%.

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Efficiency of the parabolic through solar collector using NiFe2O4/Water nanofluid and U-tube

Cited by 42 publications

References 60 publications

Parabolik Oluklu Solar Kollektörlerin Termal Verimliliğinin Artırılması: Genel Bakış

Parabolik Oluklu Solar Kollektörlerin Termal Verimliliğinin Artırılması: Genel Bakış

Chemical reaction and thermal characteristiecs of Maxwell nanofluid flow-through solar collector as a potential solar energy cooling application: A modified Buongiorno's model

Thermal analysis on Darcy‐Forchheimer swirling Casson hybrid nanofluid flow inside parallel plates in parabolic trough solar collector: An application to solar aircraft

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