Effect of Temperature on the Electrical and Thermal Behaviour of a Photovoltaic/Thermal System Cooled Using SiC Nanofluid: An Experimental and Comparison Study

Kazem, Hussein A.; Chaichan, Miqdam T.; Al‐Waeli, Ali H.A.; Jarimi, Hasila; Ibrahim, Adnan; Sopian, Kamaruzzaman

doi:10.3390/su141911897

Cited by 13 publications

(3 citation statements)

References 71 publications

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“…This system's estimation was based on the theories of thermal and energy efficiency. Using silicon carbide nanofluids as a coolant, Kazem et al [71] investigated the efficacy of a photovoltaic/thermal (PV/T) system. Testing was conducted in Oman with nanoparticles weighing 0.5%.…”

Section: Experimental Studies On Used Nanofluidsmentioning

confidence: 99%

Impact of Nano Additives in Heat Exchangers with Twisted Tapes and Rings to Increase Efficiency: A Review

Assaf,

Akroot,

Abdul Wahhab

et al. 2023

Sustainability

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The heat exchanger is crucial to all systems and applications that use it. Researchers are primarily focused on improving this component’s thermal conductivity to improve its efficiency. This was achieved by using one or more of the following strategies: inserting tapes with various shapes and numbers, inserting rings of various shapes and spacing between each, and transforming a basic liquid into a nanoliquid by adding nanomaterials with high conductivity and ultra-small particle sizes. Different types of nanomaterials were added in varying concentrations. In earlier studies, it was found that every increase in heat transfer was accompanied by a pressure drop at both ends of the exchanger. The amount of heat transferred and the pressure drop are affected by many factors, such as the torsion tape ratio, the pitch of the ring, and whether the pitch faces the direction of flow or not. Heat transfer rates can also be impacted by factors such as the length and angle of the wings, how many rings and tapes there are, and whether the rings and tapes contain holes or wings. In addition, the Reynolds number, the type, conductivity, and size of nanomaterials, and the base fluid used in the nanofluid affect this. It is possible for the shape of the exchanger tube, as well as varying rates of rise, to introduce such impacts. In this study, the factors, costs, and benefits of using any technology to increase the efficiency of the heat exchanger are reviewed so that the user can make an informed decision about the technology to use.

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Section: Experimental Studies On Used Nanofluidsmentioning

confidence: 99%

Impact of Nano Additives in Heat Exchangers with Twisted Tapes and Rings to Increase Efficiency: A Review

Assaf,

Akroot,

Abdul Wahhab

et al. 2023

Sustainability

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“…The overall performance of an MJ solar cell with minichannel heat sinks and a high concentration ratio was studied to find a better way to cool down the cell. Experiments were performed to determine the heat transfer efficiencies of different fluids, and the model was processed by means of simulations as well [23]. One study improved the performance of a triangular-tube phase-change heat accumulator from three different perspectives.…”

Section: Introductionmentioning

confidence: 99%

Effects of Varying Volume Fractions of SiO2 and Al2O3 on the Performance of Concentrated Photovoltaic System

et al. 2023

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Highly concentrated triple-junction solar cells (HCTJSCs) are cells that have diverse applications for power generation. Their electrical efficiency is almost 45%, which may be increased to 50% by the end of the year 2030. Despite their overwhelming ability to generate power, their efficiency is lower when utilized in a concentrated manner, which introduces a high-temperature surge, leading to a sudden drop in output power. In this study, the efficiency of a 10 mm × 10 mm multijunction solar cell (MJSC) was increased to almost 42% under the climatic conditions in Lahore, Pakistan. Active cooling was selected, where SiO2–water- and Al2O3–water-based nanofluids with varying volume fractions, ranging from 5% to 15% by volume, were used with a 0.001 kg/s mass flow rate. In addition, two- and three-layer microchannel heat sinks (MCHSs) with squared microchannels were designed to perform thermal management. Regarding the concentration ratio, 1500 suns were considered for 15 August at noon, with 805 W/m2 and 110 W/m2 direct and indirect radiation, respectively. A complete model including a triple-junction solar cell and allied assemblies was modeled in Solidworks software, followed by temperature profile generation in steady-state thermal analyses (SSTA). Thereafter, a coupling of SSTA and Ansys Fluent was made, in combination with the thermal management of the entire model, where the temperature of the TJSC was found to be 991 °C without active cooling, resulting in a decrease in electrical output. At 0.001 kg/s, the optimum average surface temperature (44.5 °C), electrical efficiency (41.97%), and temperature uniformity (16.47 °C) were achieved in the of MJSC with SiO2–water nanofluid with three layers of MCHS at a 15% volume fraction. Furthermore, the average outlet temperature of the Al2O3–water nanofluid at all volume fractions was high, between 29.53 °C and 31.83 °C, using the two-layer configuration. For the three-layer arrangement, the input and output temperatures of the working fluid were found to be the same at 25 °C.

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“…Overall performance can be improved by using various methodologies and techniques, like either increasing the surface of the heattransferring body or the heat transfer coefficient between the fluid and the surface that allows high heat transfer in a slight capacity [2]. Aside from the solicitation in heat transfer, hybrid nanofluids can also be blended for exceptional electrical, magnetic, chemical, and biological applications [3][4][5][6][7][8]. The great perspective of hybrid nanofluids for the augmentation of thermal energy in various applications leads to the development of effective and compact heat-transferring engineering equipment [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Dimpled Rib with Arc Pattern on Hydrothermal Characteristics of Al2O3-H2O Nanofluid Flow in a Square Duct

et al. 2022

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The present work is concerned with the experimental analysis of the thermal and hydraulic performance of Al2O3 − H2O nanofluid flow in dimpled rib with arc pattern in a square duct. The Alumina nanofluid consists of nanoparticles having a size of 30 nm. Reynolds number (Renum) studied in the square duct range from 5000 to 26,000. The nanoparticle volume fraction (ϕnp) ranges from 1.5% to 4.5%, the ratio of dimpled-arc-rib-height to print-diameter (HAD/Pd) ranges from 0.533 to 1.133, the ratio of the dimpled-rib-pitch to rib height (PAD/HAD) range from 3.71 to 6.71 and dimpled arc angle (αAD) range from 35° to 65°. The Al2O3 − H2O-based nanofluid flow values of Nusselt number (Nurs) and friction factor (frs) are higher in comparison to pure water. The dimpled ribs in the arc pattern significantly improved the thermal-hydraulic performance of the investigated test section. The nanoparticle concentration of 4.5%, the ratio of dimpled arc rib height to print diameter of 0.933, the relative dimpled arc rib height of 4.64 and the dimpled arc angle of 55° deliver the maximum magnitude of the heat transfer rate. The maximum value of the thermal-hydraulic performance parameters was found to be 1.23 for Al2O3 − H2O-based nanofluid flow in a dimpled rib with arc pattern square duct for the range of parameters investigated. Correlations of Nurs,frs and ηrs have been developed for the selected range of operating and geometric parameters.

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Effect of Temperature on the Electrical and Thermal Behaviour of a Photovoltaic/Thermal System Cooled Using SiC Nanofluid: An Experimental and Comparison Study

Cited by 13 publications

References 71 publications

Impact of Nano Additives in Heat Exchangers with Twisted Tapes and Rings to Increase Efficiency: A Review

Impact of Nano Additives in Heat Exchangers with Twisted Tapes and Rings to Increase Efficiency: A Review

Effects of Varying Volume Fractions of SiO2 and Al2O3 on the Performance of Concentrated Photovoltaic System

Effect of Dimpled Rib with Arc Pattern on Hydrothermal Characteristics of Al2O3-H2O Nanofluid Flow in a Square Duct

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