Numerical modelling of heat accumulator performance at storage of solar energy

Review Green & Sustainable Science & Technology

Effect of sensible heat storage materials on the thermal performance of solar air heaters: State-of-the-art review

Piyush R. Olivkar et al.

Summary: Solar air heaters have poor thermal efficiency due to heat losses from different parts. The integration of sensible heat storage materials, such as pebbles, sand, metal chips, oil, and gravels, effectively reduces heat losses and improves thermal efficiency. Among them, a mixture of desert sand and granular carbon demonstrates the highest thermal efficiency of 80.05%, while cement performs the worst with a thermal efficiency of 9.5%.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2022)

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Article Thermodynamics

Ultra-stable silica/exfoliated graphite encapsulated n-hexacosane phase change nanocomposite: A promising material for thermal energy storage applications

Sakshum Khanna et al.

Summary: In this study, a simple, versatile, and scalable method was demonstrated to synthesize silica encapsulated phase-change material (n-hexacosane) loaded between exfoliated-graphite nanosheets. The synthesized nanocomposites exhibited ultra-high thermal stability and high thermal conductivity without any chemical reactions during the phase change process.

ENERGY (2022)

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Article Green & Sustainable Science & Technology

Prospective life cycle assessment for designing mobile thermal energy storage system utilizing zeolite

Shoma Fujii et al.

Summary: This study focuses on a mobile thermal energy storage system that utilizes waste heat, and it conducts a prospective life cycle assessment to calculate greenhouse gas emissions and resource consumption. The study finds that the system can reduce greenhouse gas emissions and has lower resource consumption compared to batteries.

JOURNAL OF CLEANER PRODUCTION (2022)

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Article Green & Sustainable Science & Technology

Techno-economic analysis on the design of sensible and latent heat thermal energy storage systems for concentrated solar power plants

Ming Liu et al.

Summary: This study explored the design of thermal energy storage systems using various phase change materials and graphite as storage media, comparing their cost-effectiveness through an economic model. The analysis revealed that the hybrid TES system had the lowest cost among all systems studied.

RENEWABLE ENERGY (2021)

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Article Green & Sustainable Science & Technology

Development and numerical investigation of parallel combined sensible-latent heat storage unit with intermittent flow for concentrated solar power plants

Hongyang Zuo et al.

Summary: A parallel combined sensible-latent heat storage unit with intermittent flow was developed in this study. By investigating the effect of heat transfer fluid intermittency cycle length, a recursion method was used to design the change rule of the optimum intermittency length in different stages during the melting process. It was recommended to use a multistage intermittent mode to further reduce full melting time and improve the charging/discharging power for better economical efficiency in concentrated solar power (CSP) applications.

RENEWABLE ENERGY (2021)

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Article Thermodynamics