Thermo-mechanical investigation of the multi-layer thermocline tank for parabolic trough power plants

Elfeky, Karem Elsayed; Mohammed, Abubakar Gambo; Ahmed, Naveed; Wang, Qiuwang

doi:10.1016/j.energy.2023.126749

Cited by 5 publications

(3 citation statements)

References 35 publications

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“…Significant research has been conducted on the thermal ratcheting phenomenon in THS tanks. Elfeky et al developed a two-phase numerical method to investigate the impact of the melting temperature of phase change material (PCM) layers on the thermomechanical performance of cascading thermal stratification storage tanks [18]. The study considered the thermal interactions between PCM capsules, insulation layers, the fluid, the environment, and the shell.…”

Section: Thermal Ratchet Phenomenonmentioning

confidence: 99%

“…Thermocline heat storage is primarily applied in renewable energy systems, with solar energy applications being the most extensively researched avenues. These include CSP plants, Parabolic Trough Power (PTP) plants [18], domestic hot water applications [82], solar cooking systems [83], solar air heaters [35], and the solar cogeneration of power [24]. THS can also be integrated with various energy storage systems such as adiabatic compressed air energy storage [84], liquid air energy storage [85], and Pumped Thermal Energy Storage (PTES) [86].…”

Section: Application Of Thermocline Heat Storagementioning

confidence: 99%

“…They found that, for different charging times, the total efficiency and utilization rate of the mixed sensible-latent heat tank were higher than the cascaded latent heat tank [132]. During charge-discharge operations, the solidification of PCMs at high temperatures increased the heat transfer rate of the fluid and PCM capsules, and raising the melting temperature of the top PCM could enhance the overall efficiency during the charge-discharge phase [18].…”

Section: Cascaded Configurationmentioning

confidence: 99%

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New Advances in Materials, Applications, and Design Optimization of Thermocline Heat Storage: Comprehensive Review

Zhang,

Guo,

Zhu

et al. 2024

Energies

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To achieve sustainable development goals and meet the demand for clean and efficient energy utilization, it is imperative to advance the penetration of renewable energy in various sectors. Energy storage systems can mitigate the intermittent issues of renewable energy and enhance the efficiency and economic viability of existing energy facilities. Among various energy storage technologies, thermocline heat storage (THS) has garnered widespread attention from researchers due to its stability and economic advantages. Currently, there are only a few review articles focusing on THS, and there is a gap in the literature regarding the optimization design of THS systems. Therefore, this paper provides a comprehensive review of the recent research progress in THS, elucidating its principles, thermal storage materials, applications, and optimization designs. The novelty of this work lies in the detailed classification and analysis of various optimization designs for THS, including tank shape, aspect ratio, inlet/outlet configuration, thermal energy storage materials arrangement, operating strategies, and numerical model optimization approaches. The limitations of existing research are also identified, and future perspectives are proposed, aiming to provide recommendations for THS research and contribute to the development and promotion of THS technology.

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Section: Thermal Ratchet Phenomenonmentioning

confidence: 99%