Performance study of a dual-function roof solar collector for Chinese traditional buildings application

Solar stills are known as one of the best and most efficient methods for water desalination. Due to low production of solar stills, researchers have been using experimental and theoretical methods to come up with possible solutions for ameliorating freshwater production through these systems. This study aims to investigate the performance of a single slope solar still combined with a v-grooved solar air heater. Important parameters (height of the v-grooves, length of the collector, and air mass flow) affecting the performance of the proposed system were mathematically investigated using MATLAB software. The average deviation between the experimental and theoretical results was found to be about 7%. Furthermore, the results showed that the water production rate and the efficiency of the modified solar still were 150% and 44.20% higher than those of the conventional ones, respectively. Two new correlations were proposed based on the experimental results in order to predict the water production via solar stills, which are in good agreement with the results of the existing models. Based on the obtained results, the increase in the inlet air mass flow rate was not conducive to water production as the production rate was reduced by 60%. In addition, through the economic analysis, the cost per liter for the modified still was determined to be 0.03 [Formula: see text] with an interest rate of 10%.

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“…where θ is the angle of the v-grooves, D h,ac is the hydraulic diameter of the channel, and Nu is the Nusselt number. 40,41…”

Section: Heat Transfer Processmentioning

confidence: 99%

“…where the overall heat transfer coefficient could be calculated via equation (37) and the heat transfer coefficient between the back plate and the surrounding environment could be determined with equation ( 38) 41 U b,ac ¼ 1…”

Section: Heat Transfer Processmentioning

confidence: 99%

Combination of a v-grooved solar collector with a single slope solar still: Performance evaluation, mathematical modeling, and economic analysis

Azari

Lavasani

Rahbar

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Hua et al, designed a novel roof solar collector to supplying hot water and space heating to enable effective collection of solar heat as well integrating naturally. They developed and validated a dynamic numerical model with experimental data [82]. Mostafa A.H et al, the present paper focus on the performance of the solar chimney power plant in six different locations in Saudi Arabia is investigated all over the year.…”

Section: Theoretical and Numerical Investigationsmentioning

confidence: 99%

Section: Theoretical and Numerical Investigationsmentioning

confidence: 99%

Past to Present: Solar Chimney Power Technologies

Tan

Shojaei

2019

El-Cezeri Fen Ve Mühendislik Dergisi

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This study introduces the solar chimney power technology, which is a solar thermal energy system. One of the renewable energy resources, this system is an energy transformation system in which solar energy and wind energy are used together. In this system, the air that is heated with solar energy ensures the production of electric energy by moving upwards with the suction effect of the chimney and rotating the turbine that is placed inside the chimney. In this review, the main principles and characteristics of this system are discussed and the developments on the experimental and theoretical investigations carried out with regard to the solar chimneys around the world especially in recent years are shared with the readers. With the study, it is aimed to provide upto-date information to readers who are interested in this subject.

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“…Dentro de los captadores solares de placa plana encontramos soluciones como: los tejados solares "solar roof" a modo de cubierta inclinada a dos aguas (Hu, Z. et al 2018), fachadas solares conformadas por los paneles ubicados en posición vertical a modo de fachada ventilada o bien su incorporación a modo de tragaluces o ventanas de cubierta.…”

Section: B Termografíasunclassified

Aplicaciones del Captador Solar de Placa Plana y del Captador de Tubo de Vacío en la Edificación = Applications of the Flat Plate Solar Collectors and the Vacuum Tube Solar Collectors in Building

Morón

Díaz

Saíz

2018

ADE

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ResumenEl actual Código Técnico de la Edificación (CTE) pone de manifiesto la necesidad de cubrir parte de la demanda energética requerida para el abastecimiento de agua caliente sanitaria y climatización de piscinas cubiertas mediante sistemas de aprovechamiento de la energía solar térmica. En este artículo se presenta una comparativa entre las dos principales tipologías de captadores solares térmicos que existen en el mercado: el captador de placa plana y el captador de tubo de vacío, atendiendo a criterios de fracción solar, diseño e integración arquitectónica. Todo ello a fin de discernir en qué circunstancias es más favorable el uso de uno u otro sistema, comparando los resultados obtenidos mediante programas de simulación con la toma de medidas in situ.AbstractThe current Technical Building Code (CTE) highlights the need to cover part of the energy demand required for the supply of hot water and heating of indoor swimming pools using solar thermal systems. This article presents a comparison between the two main types of solar thermal collectors that exist in the market: the flat plate solar collector and the vacuum tube solar collector, according to criteria of solar fraction, design and architectural integration. All of this in order to discern in what circumstances the use of one or the other system is more favourable, comparing the results obtained through simulation programs with the taking of measurements in situ.

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Performance study of a dual-function roof solar collector for Chinese traditional buildings application

Cited by 26 publications

References 29 publications

Combination of a v-grooved solar collector with a single slope solar still: Performance evaluation, mathematical modeling, and economic analysis

Combination of a v-grooved solar collector with a single slope solar still: Performance evaluation, mathematical modeling, and economic analysis

Past to Present: Solar Chimney Power Technologies

Aplicaciones del Captador Solar de Placa Plana y del Captador de Tubo de Vacío en la Edificación = Applications of the Flat Plate Solar Collectors and the Vacuum Tube Solar Collectors in Building

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