Heat transfer, entropy generation, economic and environmental analyses of linear fresnel reflector using novel rGO-Co3O4 hybrid nanofluids

Said, Zafar; Ghodbane, Mokhtar; Sundar, L. Syam; Tiwari, Arun Kumar; Sheikholeslami, M.; Boumeddane, Boussad

doi:10.1016/j.renene.2020.11.054

Cited by 113 publications

(27 citation statements)

References 56 publications

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“…However, an important issue for CPV technology is non-uniformity in illumination and temperature, which can ultimately affect the overall electrical efficiency of solar cells [82]. Heat transfer applications have been analyzed by fluidic behavior, thermal properties, the size of nanoparticles and the mathematical co-relationships [83]. At higher temperatures, the increase in thermal conductivity with an increasing solid volume fraction is more pronounced.…”

Section: Application Of Hybrid Nanofluids In the Solar Collectormentioning

confidence: 99%

A Comprehensive Review on Efficiency Enhancement of Solar Collectors Using Hybrid Nanofluids

et al. 2022

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Because of its potential to directly transform solar energy into heat and energy, without harmful environmental effects such as greenhouse gas emissions. Hybrid nanofluid is an efficient way to improve the thermal efficiency of solar systems using a possible heat transfer fluid with superior thermo-physical properties. The object of this paper is the study the latest developments in hybrid applications in the fields of solar energy systems in different solar collectors. Hybrid nanofluids are potential fluids with better thermo-physical properties and heat transfer efficiency than conventional heat transfer fluids (oil, water, ethylene glycol) with single nanoparticle nanofluids. The research found that a single nanofluid can be replaced by a hybrid nanofluid because it enhances heat transfer. This work presented the recent developments in hybrid nanofluid preparation methods, stability factors, thermal improvement methods, current applications, and some mathematical regression analysis which is directly related to the efficiency enhancement of solar collector. This literature revealed that hybrid nanofluids have a great opportunity to enhance the efficiency of solar collector due to their noble thermophysical properties in replace of conventional heat transfer working fluids. Finally, some important problems are addressed, which must be solved for future study.

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Section: Application Of Hybrid Nanofluids In the Solar Collectormentioning

confidence: 99%

A Comprehensive Review on Efficiency Enhancement of Solar Collectors Using Hybrid Nanofluids

et al. 2022

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“…On the other hand, the use of flat reflector mirrors will significantly reduce the manufacturing cost of the linear solar reflectors (LFRs) [40,41]. For this reason, much of the scientific research has been directed towards the development the solar systems with the Linear Fresnel solar Reflectors (LFRs), where many countries such as Spain and Germany have widely exploited this technology of acceptable price although its efficiency is low [41], but its thermal performance can be improved by using nanofluids [5,[42][43][44], because the nanoparticles immersed in pure fluid improve the thermal transfer between the working fluid and the receiver tube [45].…”

Section: Linear Fresnel Solar Reflector Subsystemmentioning

confidence: 99%

Performance Analysis of a Solar-Driven Ejector Air Conditioning System Under El-Oued Climatic Conditions, Algeria

Ghodbane

Hussein

2021

Journal of Thermal Engineering

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In order to understand the behavior and to determine the effective operational parameters of a solar-driven ejector air conditioning system at low or medium temperature, a dynamic model depends on the principles of conservation, the momentum mass and energy is developed. For this purpose, the thermodynamic characteristics of the liquid and vapor refrigerant were identified using the Engineering Equation Solver (EES) software. Linear Fresnel solar reflector has been used as a tool to convert solar energy into thermal energy. Water (R718) was used as a refrigerant. The operational conditions for the studied solar-driven ejector air conditioning system are as follows: evaporator temperature "T e =283.15 K", condenser temperature "T c =305.15 K", and generator temperature "T g = 373.15 K". The performance of the ejector air conditioning system was compared as a function of the operating parameters of the subsystem. The average value of thermal efficiency of the Fresnel linear concentrator has reached 31.60 %, the drive ratio "ω" is 0.4934, the performance value of the ejector air conditioning subsystem "COPejc" is 60.664 % and the average value of the thermal performance of the machine "STR" has touched 19.17 %. The results obtained through this scientific subject are stimulating and encouraging, where this technique can be used for air conditioning in desert areas in southern Algeria, where fossil energy (petroleum, gas, etc.) is extracted and produced in various types.

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“…are generally used for synthesis of nanofluids [7,8]. In the recent past, a lot of numerical as well as experimental work has been carried out to analyze thermal capabilities and challenges tomono and hybrid nanofluids [9] in mini and micro channels [10][11][12][13][14].Experimental analysis of aqueous alumina nanofluid is performed by Nguyen et al [15]with different particle sizes and concluded that nanoparticles with smaller size performed well.CuO and water nanofluid is investigated by Selvakumar and Suresh [16]with 20% rise in heat transfer but at the cost of pressure losses.Nanofluids have also been recommended for use in low to medium temperature solar collectors [17] and reflectors [18] to enhance heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal performance evaluation of super hydrophobic square pin fin mini channel heat sink

Hadi

Ali

2022

THERM SCI

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Efficient heat removal with less pressure drop is the focal point of research work in the field of thermal management systems. This research work is aimed to analyze pin fin (inline) mini channel heat sink with super hydrophobic coatings. SiO2 aqueous nanofluids with 0.01% and 0.02% volumetric concentration are used as heat transfer fluid. Data is attained at steady state with power input of40 watt, 55 watt and 70 watt, flow rate of 300 to 700 ml/min and Reynolds number ranging from 400 to 1230. Test rig is authenticated by matching the data of distilled water for simple pin fin heat sink with the theoretical model of Tullius which matched the data well. Super hydrophobic mini channel heat sink performed better with 25.23%, 21.8%, and 23.38% augmentation in Nusselt number and 33.19%, 30.5%, 31.1% reduction in pressure drop for distilled water, SiO2 (0.01%) and SiO2 (0.02%) respectivelyas compared to the conventional pin fin mini channel heat sink. The nutshell of this experimental work is magnification in heat transfer with reduction in pressure drop.

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Heat transfer, entropy generation, economic and environmental analyses of linear fresnel reflector using novel rGO-Co3O4 hybrid nanofluids

Cited by 113 publications

References 56 publications

A Comprehensive Review on Efficiency Enhancement of Solar Collectors Using Hybrid Nanofluids

A Comprehensive Review on Efficiency Enhancement of Solar Collectors Using Hybrid Nanofluids

Performance Analysis of a Solar-Driven Ejector Air Conditioning System Under El-Oued Climatic Conditions, Algeria

Hydrothermal performance evaluation of super hydrophobic square pin fin mini channel heat sink

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