Numerical Analysis of PCM Packed Bed Heat Storage Coupled with Transpired Solar Collector

Pop, Octavian G.; Bode, Florin; Berville, Charles; Croitoru, Cristiana

doi:10.1109/ciem52821.2021.9614917

Cited by 2 publications

(2 citation statements)

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“…To reduce the size of the mesh and to reach more accurate results the study will focus on a part of the storage consisting in 24 PCM spheres. The real scale thermal energy storage integrated in the back-pass of the TSC have been mathematically modeled and analyzed in a previous study (Pop et al, 2021).…”

Section: Prototype and Experimental Setupmentioning

confidence: 99%

“…Transpired collectors with integrated LHTES were studied by Pop et al (2021) where it was investigated the optimal arrangement of encapsulation for TES, like integrating phase change materials PCM. Spherical encapsulations were analyzed via CFD (Computational Fluid Dynamics) studies and validated via PIV (Particle Image Velocimetry) measurements, the objective being to analyze the effects of spheres arrangements on heat release times.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Prototype and Experimental Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%