Numerical Simulation Investigation of a Double Skin Transpired Solar Air Collector

Berville, Charles; Bode, Florin; Croitoru, Cristiana

doi:10.3390/app12010520

Cited by 10 publications

(6 citation statements)

References 22 publications

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“…Moreover, increasing the number of layers and introducing a separation plate influence the performance of the collector. The efficiency gradually increases when increasing the solar collector thickness until it reaches a value of 20 cm, according to Berville C. et al [51].…”

Section: Thermal Energy Storage Systems Using Phase-change Materials ...mentioning

confidence: 92%

“…Several geometrical designs for PCM integration in TSC have lately been investigated. The incorporation of PCMs in spheres [22,51] is viewed as the optimum solution in terms of the unitary distribution of the flow and the size of the heat exchange surface. Furthermore, the TSC configuration can be refined with additional improvements by providing a mobile insulating blanket consisting of materials with very low heat conductivity, such as aerogel, as Calota R. suggests in a research grant report [61].…”

Section: Thermal Energy Storage Systems Using Phase-change Materials ...mentioning

confidence: 99%

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Harnessing Nanomaterials for Enhanced Energy Efficiency in Transpired Solar Collectors: A Review of Their Integration in Phase-Change Materials

Croitoru,

Bode,

Calotă

et al. 2024

Energies

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The building sector plays an important role in the global climate change mitigation objectives. The reduction of CO2 emissions and energy consumption in the building sector has been intensively investigated in the last decades, with solar thermal energy considered to be one of the most promising solutions due to its abundance and accessibility. However, the discontinuity of solar energy has led to the study of thermal energy storage to improve the thermal performance of solar thermal systems. In this review paper, the integration of various types of phase-change materials (PCMs) in transpired solar collectors (TSC) is reviewed and discussed, with an emphasis on heat transfer enhancements, including nanomaterials. Thermal energy storage applied to TSC is studied in terms of design criteria, materials technologies, and its impact on thermal conductivity. This review highlights the potential of nanomaterial technology integration in terms of thermal performance improvements. The utilization of nanomaterials in solar walls holds the potential to significantly enhance their performance. The integration of diverse materials such as graphene, graphite, metal oxides, and carbon nanoparticles can pave the way for improving thermal conductivity.

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Section: Thermal Energy Storage Systems Using Phase-change Materials ...mentioning

confidence: 92%

Section: Thermal Energy Storage Systems Using Phase-change Materials ...mentioning

confidence: 99%

Harnessing Nanomaterials for Enhanced Energy Efficiency in Transpired Solar Collectors: A Review of Their Integration in Phase-Change Materials

Croitoru,

Bode,

Calotă

et al. 2024

Energies

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“…The model reproduces a part of a real scale thermal energy storage inserted in a double skin transpired solar collector (DSTSC) (Berville et al, 2021(Berville et al, , 2022. This TES has the following features: length, width, and depth of 0.5, 0.5, and 0.06 m respectively.…”

Section: Introductionmentioning

confidence: 99%

Enhancing solar façade thermal performance with PCM spheres: A CFD investigation

Berville,

Bode,

Croitoru

et al. 2023

Journal of Building Physics

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To improve building energy efficiency and address thermal storage challenges during periods without a heat source, such as cloudy weather or night-time, a range of solutions is required. Innovative technologies and sustainable practices are essential for combating climate change and reducing carbon emissions. This study primarily focuses on Thermal Energy Storage (TES) systems, specifically those using Phase Change Materials (PCMs), to increase energy efficiency for Transpired Solar Collectors used in buildings applications. During the last 30 years Transpired Solar Collectors (TSC) have been extensively investigated. However, a primary concern still exists regarding thermal storage when the heat source is unavailable, such as during periods of cloudy weather or at night. Thus, a Thermal Energy Storage (TES) system coupled with the TSC is a potential solution. In this study we are investigating using numerical simulation the arrangement of encapsulation for TES, integrating phase change materials (PCM) in spherical elements when compared with plate encapsulation elements. The model reproduces a part of a real scale thermal energy storage inserted in a Double Skin TSC. The model consists of a Plexiglas duct in which four different arrangements for the spherical encapsulated PCM were studied. For each of the arrangements the heat transfer between the TES elements and the air passing through the collector was analyzed. The primary finding of the study indicates that the hexagonal arrangement offers better passive airflow control, thus enhancing the heat transfer up to 12.3% compared to the rectangular arrangements

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“…Similarly, Bejan et al [14] also uses opaque solar collectors transpired in buildings to do an experimental study to improve efficiency and integrate phase change materials to allow direct heating of outdoor air in buildings. The numerical simulation study of a double-skin sweated solar air collector was analyzed by Berville et al [15]. ANSYS Fluent software is a simulation software widely used to study the distribution of air temperature, pressure, and velocity in dryers [16].…”

Section: Introductionmentioning

confidence: 99%

Contribution to the modelling of air flows in a conical inlet drying chamber

Mamoudou

Abraham

Berville

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The main objective of this study is to provide input on the mesh and temperature distribution inside the drying chamber for a building-integrated dryer for food preservation to obtain a uniform temperature profile. For this, we varied the angle of inclination of 20° and 30° subsequently we also varied the speed of the air flow of (1m/s; 1,2 m/s; 1,5 m/s; 1,7 m/s and 2 m/s), the temperature at the level of the walls is the ambient temperature it is 25°C and the air inlet temperature is set at 55°C. The results obtained showed that the temperature distribution inside the different drying chambers is almost uniform for an inclination of 30° against for an inclination of 20° it is uniform on the bend of the cone of the diffuser but not in the drying chamber. This uniform distribution reduces the drying time of the product. It can therefore be concluded that the variation in tilt angle and drying speed has a significant effect on the drying time of the product.

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Numerical Simulation Investigation of a Double Skin Transpired Solar Air Collector

Cited by 10 publications

References 22 publications

Harnessing Nanomaterials for Enhanced Energy Efficiency in Transpired Solar Collectors: A Review of Their Integration in Phase-Change Materials

Harnessing Nanomaterials for Enhanced Energy Efficiency in Transpired Solar Collectors: A Review of Their Integration in Phase-Change Materials

Enhancing solar façade thermal performance with PCM spheres: A CFD investigation

Contribution to the modelling of air flows in a conical inlet drying chamber

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