Performance investigation of a new designed vacuum flat plate solar water collector: A comparative theoretical study

Seddaoui, Ali; Ramdane, Mohamed Zouhir Dar; Noureddine, Rachid

doi:10.1016/j.solener.2021.12.038

Cited by 14 publications

(3 citation statements)

References 26 publications

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“…Research by Seddaoui et al [ 169 ] showed that heat loss in the FPC could be significantly reduced using vacuum insulation. This is related to the FPC heat removal factor.…”

Section: Swh Specifications and Characteristicsmentioning

confidence: 99%

Review on the Progress of Solar Water Heaters and Their Future Perspectives

2023

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A solar water heater (SWH) converts solar radiation into thermal energy for various purposes, and its technology has experienced numerous developments. Many studies have focused on developing, optimizing, and analyzing the technological configurations of SWH to improve its thermal efficiency, but they rarely achieve 80% efficiency. This review aims to provide a broad overview of SWH, including the energetic and exergetic approaches and analyses, technological development, and examines advantages, disadvantages, and further developments. Various collectors of the SWH and related studies are also highlighted, and the results identify the technical and policy challenges of the implementation. Suggested potential solutions to these challenges are presented with further directions. Furthermore, this study also discusses the limitations of the current SWH technology by presenting the specifications and characteristics. It also presents the mathematical equation model often used, the technology potential, and the results of the latest studies and developments regarding SWH technology. The prospects for further development of the most promising SWH should be analyzed.

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“…Research by Seddaoui et al [ 169 ] showed that heat loss in the FPC could be significantly reduced using vacuum insulation. This is related to the FPC heat removal factor.…”

Section: Swh Specifications and Characteristicsmentioning

confidence: 99%

Review on the Progress of Solar Water Heaters and Their Future Perspectives

2023

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“…Advancements in solar technology have enhanced seawater desalination processes, thereby providing potable water to extensive populations ( Memon et al, 2020 ; Wu et al, 2020 ; Wang et al, 2023 ). Moreover, developments in solar collectors and vacuum insulation technologies signify a transformative phase for sustainable infrastructure ( Ren et al, 2021 ; Seddaoui et al, 2022 ). Thus, solar energy stands as a solution to the energy challenge and a symbol of environmental sustainability.…”

Section: Introductionmentioning

confidence: 99%

Impact of solar-driven heating strategies on the phase change thermal storage performance of erythritol

Deng,

Zhen,

Zhu

et al. 2024

Front. Chem.

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With escalating energy demands, solar power stands out for its abundance and renewable advantages, presenting a paramount sustainable solution. Herein, we tactically incorporate phase change material (PCM) into solar energy systems, resulting in substantial enhancements in energy storage and utilization. Through numerical simulations, the thermal dynamics and phase change processes associated with various heating methodologies are investigated, aiming to achieve optimal thermal performance and energy efficiency. Detailed analysis of temperature dynamics within the PCM under two distinct heating methods reveals pivotal thermal fluctuations in both the PCM and water during heat release. The results indicate that bottom heating promptly induces rayleigh convection, resulting in a uniform temperature and a stable phase interface, which are desirable for heat transfer. In contrast, central tube heating concentrates heat transfer in the upper PCM layer, leading to an uneven phase interface and thermal stratification. Configurations with two horizontally aligned heating tubes result in a 36% reduction in melting duration compared to the single central tube setup, highlighting enhanced efficiency. Additionally, the bottom heating approach demonstrates improved energy storage efficiency in both the initial and second heating cycles. These findings highlight the potential of PCM-integrated combined heating systems for solar energy capture, confirming their efficiency and practicality in addressing modern household energy demands.

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“…A maximum of 73% e ciency was obtained using this model modi cation. Seddaoui et al [19] combined the con guration of FPC and ETC to create a new design of vacuum at plate collectors. This model was tested experimentally and simulated numerically.…”

Section: Introductionmentioning

confidence: 99%

Thermal evaluation of geometrical innovations in concentric and eccentric evacuated single and double solar collectors

Teles,

Lino,

Silva

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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In this study, an experimental and numerical investigation of eight geometrical con gurations of evacuated tube solar collectors was conducted. The con gurations were tested simultaneously in outdoor installation under the same test conditions. The parameters such as collector eccentricity, solar concentration, vacuum, collector absorber, and cover tube materials were investigated. The numerical model developed in MATLAB was validated with experimental results. The results show that the eccentricity and the absorptivity of the material of the absorber are the parameters that have the highest in uence on the collector performance. The use of re ective lm in the eccentric solar collectors' con gurations can increase e ciency by 33%. The vacuum presented an e ciency increase variation between 1% and 4% in the eccentric tube collectors. For the concentric collectors con gurations, the use of the vacuum between the tubes can reach an increase of 9% in its performance. The eccentricity of the collector using re ective lm and vacuum allows an effective solar concentration in the collector absorber presenting a 26% higher e ciency when compared with the concentric collector.

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Performance investigation of a new designed vacuum flat plate solar water collector: A comparative theoretical study

Cited by 14 publications

References 26 publications

Review on the Progress of Solar Water Heaters and Their Future Perspectives

Review on the Progress of Solar Water Heaters and Their Future Perspectives

Impact of solar-driven heating strategies on the phase change thermal storage performance of erythritol

Thermal evaluation of geometrical innovations in concentric and eccentric evacuated single and double solar collectors

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