Performance evaluation and nanofluid using capability study of a solar parabolic trough collector

Kasaeian, Alibakhsh; Daviran, Samaneh; Azarian, Reza Danesh; Rashidi, Alimorad

doi:10.1016/j.enconman.2014.09.056

Cited by 249 publications

(75 citation statements)

References 20 publications

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“…It is calculated that the η o of all the thicknesses is identical, indicating that the η o is independent of the thickness of Ni-Al coatings because they all have a similar α value. In addition, the η o in this present study is close to those values of previous reports [2,17]. The F R significantly increases with increasing thickness of the Ni-Al coating and reaches 0.769 at the thickness of 299 µm, according to the increasing actual useful energy gain of the PTC.…”

Section: Resultssupporting

confidence: 78%

“…This performance depends on the solar absorber materials, the prevention of heat loss by the glass envelope tube, the distance between the glass tube and the absorber tube, and the coating materials used on the absorber tube [2]. In this prototype, the solar receiver tube consists of a SS tube coated with three different thicknesses of Ni-Al coating.…”

Section: Design and Manufacture Of The Ptcmentioning

confidence: 99%

“…The concentration ratio (C) is calculated from the ratio of the aperture area (A a ) to the receiver area (A r ), as shown in Eq. (2). In this PTC prototype, the C is fixed at 15.…”

Section: Design and Manufacture Of The Ptcmentioning

confidence: 99%

“…The outer surface of the solar receiver tube is coated with solar selective materials to absorb that concentrated sunlight and also any sunlight that falls directly on the tube itself. All the collected radiation is then converted into thermal energy [2,3]. One important task is the development of a solar selective absorber to achieve high solar absorptance (α) or low reflectance (R) over the whole range of the solar spectrum (300-2500 nm) and low emittance (ε) of long wavelength infrared (IR) radiation at 2.5-20 μm [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…At present, there are several coatings that have been used as solar selective absorbers for high-temperature operation of PTC: Pt-Al 2 [4,[6][7][8][9][10]. In addition, the solar absorber Ni-5Al has attracted considerable attention as a solar selective coating for concentrating solar radiation at high operating temperatures [10].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Influence of Ni–Al coating thickness on spectral selectivity and thermal performance of parabolic trough collector

Suriwong

Bunmephiphit

Wamae

et al. 2018

Mater Renew Sustain Energy

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This study investigates the influence of Ni-Al coating thickness on the spectral selectivity and thermal performance of a parabolic trough collector (PTC). Three thicknesses of Ni-Al coating for use as solar absorber material were successfully prepared on the outer surface of a stainless steel 316L (SS) tube by flame spray. The phase, morphology, and reflectance (R) of the Ni-Al coatings were characterized using several techniques. The PTC and solar receiver tube were specially designed and constructed for observing the collector thermal performance by following ASHRAE . Looking at the results, the actual average thicknesses of the three Ni-Al coatings turn out to be 195, 215, and 299 μm. The morphology and chemical composition of all three thicknesses are similar. The chemical composition in the cross-sectional view exhibits non-uniform distribution. The three thicknesses of the coating are composed of NiO and Al 2 O 3 phases, which also corresponded to the results of SEM-EDX mapping. The differences in a solar absorptance (α) of the three thicknesses of Ni-Al coating are not statistically significant, with an average α value of 0.74-0.75. However, there are differences in thermal efficiency of the PTC depending on the thickness of the Ni-Al coating. Of the three samples, the thickest one (299 µm) demonstrates the highest ability to convert solar radiation into thermal energy.

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Section: Resultssupporting

confidence: 78%

Section: Design and Manufacture Of The Ptcmentioning

confidence: 99%

“…The concentration ratio (C) is calculated from the ratio of the aperture area (A a ) to the receiver area (A r ), as shown in Eq. (2). In this PTC prototype, the C is fixed at 15.…”

Section: Design and Manufacture Of The Ptcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of Ni–Al coating thickness on spectral selectivity and thermal performance of parabolic trough collector

Suriwong

Bunmephiphit

Wamae

et al. 2018

Mater Renew Sustain Energy

View full text Add to dashboard Cite

show abstract

Nanofluids in Solar Thermal Parabolic Trough Collectors (PTCs)

Dehghan

Akbarzadeh

Valipour

et al. 2023

Nanotechnology Applications for Solar Energy Systems

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Experimental study on the thermal performance and heat transfer characteristics of solar parabolic trough collector using Al₂O₃ nanofluids

Subramani

Nagarajan

Wongwises

et al. 2017

Env Prog and Sustain Energy

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The present work investigated thermal performance and heat transfer characteristics of a solar parabolic trough collector using Al2O3/DI‐H2O nanofluids. Nanofluids of varying concentrations (0.05% ϕ ≤ 0.5%) with mass flows (0.0083–0.05 kg/s) were considered for turbulent regime (2401 ≤ Re ≤ 7202) analysis. Experiments were carried out as per ASHRAE 93(2010) standards. By thermal performance analysis using Al2O3 nanofluid, it was understood that the collector efficiency improved up to 56% at a maximum volume concentration of ϕ = 0.5% and flow rate of 0.05 kg/s. The heat transfer study comparing Al2O3 nanofluid with pure water showed appreciable reduction in temperature gradient and surface temperature of the absorber. The heat transfer characteristics such as Nusselt number and friction factor relating to Reynolds number fits the experimental and predicted data and found within the limits of ±5.35% and ±9.61% for Nusselt number and friction factor respectively. Moreover, a similar empirical correlation was developed for collector efficiency, which was identified to be within the limit of ±1.02%. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1149–1159, 2018

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Performance evaluation and nanofluid using capability study of a solar parabolic trough collector

Cited by 249 publications

References 20 publications

Influence of Ni–Al coating thickness on spectral selectivity and thermal performance of parabolic trough collector

Influence of Ni–Al coating thickness on spectral selectivity and thermal performance of parabolic trough collector

Nanofluids in Solar Thermal Parabolic Trough Collectors (PTCs)

Experimental study on the thermal performance and heat transfer characteristics of solar parabolic trough collector using Al₂O₃ nanofluids

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Performance evaluation and nanofluid using capability study of a solar parabolic trough collector

Cited by 249 publications

References 20 publications

Influence of Ni–Al coating thickness on spectral selectivity and thermal performance of parabolic trough collector

Influence of Ni–Al coating thickness on spectral selectivity and thermal performance of parabolic trough collector

Nanofluids in Solar Thermal Parabolic Trough Collectors (PTCs)

Experimental study on the thermal performance and heat transfer characteristics of solar parabolic trough collector using Al2O3 nanofluids

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Product

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Experimental study on the thermal performance and heat transfer characteristics of solar parabolic trough collector using Al₂O₃ nanofluids