Comparative Experimental Study of New Absorbent Surface Coatings for Flat Plate Solar Collectors

Moncada, Maira Lorena Trejos; Muñoz, Beatriz Cruz; Yoshida, Mitsutoshi; Rodríguez, Rubén Dorantes

doi:10.1016/j.egypro.2014.10.179

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…Depending on climate specifications of each geographic area, many renewable sources of energy solutions can be suggested [2,3], in order to solve the energy crisis, global warming, and climate change, one of the most abundant renewable sources of energy is solar energy [4], it can be exploited to produce thermal energy by using solar concentrators such as Fresnel mirrors concentrators [5] and parabolic trough collectors [6]. In this study, we chose solar water heaters as an application, to exploit solar thermal energy, and further on, we built a full-scale experimental station, to test three solar water heaters technologies: water-in-glass evacuated tube collectors [7,8], selective surface flatplate collectors [9,10] and Fresnel mirrors concentrator with a water-in-glass vacuum tube collector with a dual sun tracking system, to be able to compare and evaluate the performance of each one of them in various weather conditions, all over the year [11,12].…”

Section: Introductionmentioning

confidence: 99%

Comparison of three solar water heaters technologies through a full-scale experimental station

Boukdir

Omari

2022

E3S Web Conf.

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The aim of the solar water heater designed for Tahala grid project, is to provide renewable energy to the residents of Tahala village in southern of Morocco, our contribution as LERED* laboratory to this project consists of the creation of a novel solar water heater, with a long lifetime, high efficiency, reliability and quality, that uses solar concentration instead of direct exposition in the hope of reaching high temperatures even during cold weather and the winter season. In order to evaluate the performances of this new solar water heater, it was necessary to build a full-scale solar water heater test bench station, which allows to monitor the thermal station remotely, in order to start new experiments, measure various parameters such as cumulated thermal energy, the maximum reached temperature, efficiency, and so on, in order to compare the performances of each solar water heating technology in various weather conditions. In this study, we choose to test and compare three solar water heater technologies: water-in-glass evacuated tube collectors, selective surface flat-plate collectors, and the novel design that consists of a Fresnel mirrors concentrator with a water-in-glass evacuated tube collector with a dual sun tracking system. The result of experiments shows that under normal weather conditions, the Fresnel mirrors concentrator efficiency reached 48%, followed by the evacuated tube collector that have an efficiency of 42.3 %, and then come at the last position the flat-plate collector with an efficiency 36.3%.

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Section: Introductionmentioning

confidence: 99%

Comparison of three solar water heaters technologies through a full-scale experimental station

Boukdir

Omari

2022

E3S Web Conf.

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“…These coatings are designed to have the maximum possible absorbance and minimum reflectance of the incident solar radiation while maintaining a minimum emittance value. Many materials were designed to closely meeting these specifications [3][4][5][6]. Among the promising materials investigated nickelpigmented aluminum oxide [7], nickel-aluminum (NiAl) alloy embedded into black paint [8], CrNxOy/SiO2 on Cu(Si) substrate deposited by DC reactive magnetron sputtering method [9], black chrome or carbon-coating [10] have been investigated showing advantageous solarthermal conversion characteristics for flat plate collector systems.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Solar-Thermal Characteristics of the Flat-Plate Collector Using a Composite Coating

Jasim

Al-Tabbakh

Hasan

2021

ANJS

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A commercially available matt black paint is used as the primary component of a composite coating for low-temperature flat collector systems. The composite coating is composed of the paint, carbon black powder (CBP) and lithium metal oxide (LMO) powder. The CBP and LMO powders are added on the top of the primary paint to improve the solar-thermal conversion characteristics of the collector. The optical and solar-thermal conversion characteristics of these coatings are investigated by means of optical microscopy, optical spectrophotometry, total reflectance measurement, and the measurement of the maximum collector temperature. Results show that the solar-thermal conversion response (maximum temperature) of the collector plate can be improved with the addition of the CBP and LMO powder at low concentrations. This is been demonstrated and discussed in this report. The coatings prepared in the present work can easily be applied on the collector surface and exhibit competing characteristics to other coatings.

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Investigation on the effect of different coated absorber plates on the thermal efficiency of the flat-plate solar collector

Sakhaei

Valipour

2019

J Therm Anal Calorim

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Comparative Experimental Study of New Absorbent Surface Coatings for Flat Plate Solar Collectors

Cited by 6 publications

References 5 publications

Comparison of three solar water heaters technologies through a full-scale experimental station

Comparison of three solar water heaters technologies through a full-scale experimental station

Improvement of the Solar-Thermal Characteristics of the Flat-Plate Collector Using a Composite Coating

Investigation on the effect of different coated absorber plates on the thermal efficiency of the flat-plate solar collector

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