Numerical Investigations of Heat Transfer Performance of Nanofluids in a Flat Plate Solar Collector

Ekramian, E.; Etemad, S.Gh.; Haghshenasfard, Masoud

doi:10.11159/ijtan.2014.005

Cited by 4 publications

(4 citation statements)

References 28 publications

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“…The researchers determined that Cu-water nanofluid is more useful in terms of improving the heat loss parameter. Ekramian et al [44] executed studies to evaluate parameters such as thermal transfer coefficients and thermal efficiency in a FPSC system using different nanofluids. The states of temperature and flow rate parameters on nano-liquids and pure water were examined and the results were compared.…”

Section: Materials and Methods Utilization Of Nanofluids In Solar Collementioning

confidence: 99%

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Güneş Kolektörlerinde Nanoakışkanların Kullanılmasının Etkileri

Ünvar

Menlik

2021

Politeknik Dergisi

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The importance of using solar energy, one of the renewable energy sources, has started to be understood more recently. The negative environmental effects and limited amounts of fossil fuels have led to increased demand for renewable energy sources worldwide and the production of various models and devices has accelerated to take advantage of solar energy, which is the basis of all energy sources. Using solar collectors as a way to benefit from solar energy has been used for many years. Although solar collectors are generally divided into 4 types as flat plate (FPSC), evacuated tube (ETSC), parabolic (PSC) and heat pipe (HPSC), these types can also be divided into separate types with many different features. The most commonly used solar collector type in the world is Flat Plate Solar Collector. The most important reasons for this are being cheap, easily produced and applied in various ways. Yet, the thermal productivity of FPSCs decreases below 40% in non-ideal climate conditions with low surrounding temperature. The existence of such disadvantages of FPSCs led to the production of Evacuated Tube Solar Collectors. With the advancing technology, the utilization of heat pipes in collectors has come to the agenda and as a result of the studies conducted, it has been determined that the use of heat pipe improves efficiency. In addition, the use of nanofluids in solar collectors and heat pipes has become quite common, and many studies have been carried out especially on this subject recently. The primary objective is always to improve the performance of the system and achieve efficiency. In this way, solar energy will be used in the most effective way and world energy supply demand will be met by using renewable resources.

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Section: Materials and Methods Utilization Of Nanofluids In Solar Collementioning

confidence: 99%

“…The use of nanofluid has been very beneficial in terms of transmitting the heat parameter through the pipe in the collector. [44] MWCNT, CuO, Al2O3-H2O…”

Section: Materials and Methods Utilization Of Nanofluids In Solar Collementioning

confidence: 99%

Güneş Kolektörlerinde Nanoakışkanların Kullanılmasının Etkileri

Ünvar

Menlik

2021

Politeknik Dergisi

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“…Moghadam et al [17], Ekramian et al [18], and Shafiey et al [19] analyzed CuO-water-based nanofluid impact on a solar collector in comparison to water. The outcomes showed that an increase in the mass fraction of nanofluid decreases the specific heat.…”

Section: Introductionmentioning

confidence: 99%

An Analysis of the Effects of Nanofluid-Based Serpentine Tube Cooling Enhancement in Solar Photovoltaic Cells for Green Cities

Jose¹,

Shrivastava

Soni³

et al. 2023

Journal of Nanomaterials

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In this work, the impact of the serpentine copper tube heat exchanger with nanofluids on 100 W solar photovoltaic thermal collectors (PV/T) was analyzed experimentally and numerically. The cooling fluids assessed in this system were distilled water, Al2O3 0.1%, and Al2O3 0.2% based nanofluids. Tests were accomplished at diverse coolant mass flow rate in India’s summer days of 2018. A computational fluid dynamics (CFD) investigation was carried out to perform a parametric study, identify surface and exit T profiles, and examine the cooling effectiveness. The impact of mass flow rate of nanofluid on the outside T and Reynolds number were studied. The Reynolds number obtained in the flow experiments and CFD analysis was in the range of 900–1,300. The maximum irreversibility occurred while using water, whereas minimum irreversibility obtained Al2O3 0.2% nanofluid. Exergy efficiency was found to be increased from 20% to 36% during the day. It was identified that the increase in PV/T scheme led to higher exergy losses. The thermal efficiency of a water-based cooling system resulted in 53.61%. Meanwhile, Al2O3 0.1% and Al2O3 0.2% based coolants provided 69.45% and 71.02%, respectively. A good agreement was obtained between the experimental results and the computer model.

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“…Among the applications that are widely used are solar water heating systems, where solar radiation is converted into heat transmitted to the flowing water for heating. The most common collector types for solar water heating systems are flat plate solar collectors [2]. The standard flat plate solar collector consists of an insulation box with a high conductivity metal plate inside it, such as aluminium or copper called absorber plate, connected to the absorber plate tubes, and sometimes the tubes are integrated with the plate.…”

Section: Introductionmentioning

confidence: 99%

Improving the Performance of A Flat Plate Solar Collector Using Nanofluid as Working Fluid

Hamdoon¹

2020

(AREJ)

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Solar energy is the best alternative to limited fossil fuels. The foremost important means of utilizing solar energy are solar collectors. The most common types of solar collectors are flat plate solar collectors. A great deal of theoretical research has been conducted to enhance the flat plate solar collector efficiency. One effective way to increase the efficiency is by using an improved thermal properties fluid as nanofluid. In this paper, a numerical study has been made to enhance the efficiency and improve the performance of solar collector via the use of (Multi-Wall Carbon Nano Tube-water) MWCNT-H2O nanofluid instead of traditional fluid like water as working fluid under the weather of Mosul city / Iraq (36.3489° N, 43.1577° E). One dimensional dynamic model using implicit finite difference method was used. Solving energy conservation equations through the various layers of the solar system is the basis upon which the current model was based. Effects of nanoparticle volume fraction and mass flow rate on the working fluid stream temperature differences, and the thermal efficiency were studied. The mass flow rate was varied from 0.004 kg/s to 0.03 kg/s, while the volume fraction was varied from 0% to 6%. The results of "Nanofluid Based Flat Plate Solar Collector" were compared with the experimental results presented by [1]. The comparison established a good match between the current results and experimental results. The results showed an increase in the working fluid outlet and inlet temperature difference and collector thermal efficiency due to the addition of MWCNT nanoparticles. The temperature difference of

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Numerical Investigations of Heat Transfer Performance of Nanofluids in a Flat Plate Solar Collector

Abstract: Abstract-

Cited by 4 publications

References 28 publications

Güneş Kolektörlerinde Nanoakışkanların Kullanılmasının Etkileri

Güneş Kolektörlerinde Nanoakışkanların Kullanılmasının Etkileri

An Analysis of the Effects of Nanofluid-Based Serpentine Tube Cooling Enhancement in Solar Photovoltaic Cells for Green Cities

Improving the Performance of A Flat Plate Solar Collector Using Nanofluid as Working Fluid

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