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Thermal Storage Performance of Latent Heat Thermal Energy Storage Device with Helical Fin Under Realistic Working Conditions by Ning Zhang; Xing Cao; Xiyan Fan; Lei Chen; Yongtao Qu is a Engineering article available to read on EtoBox.

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Latent heat thermal energy storage has garnered increasing interest and development as a significant technique for recovering waste heat. In this research, the latent heat thermal energy storage device with helical fin is proposed and its thermal storage performance is also investigated by numerical simulation. First, assorted helix pitches (400 mm, 200 mm, 100 mm and 50 mm) and fin numbers are taken into account to investigate the thermal storage performance with various fin parameters. Then, four types of nanoparticles (SiC, TiO 2 , CuO and Al 2 O 3 ) are dispersed into the phase change material to address the inherent defect of poor thermal conductivity of phase change material. Afterwards, several realistic working circumstances, including four inclination angles (θ = 0 • , 30 • , 60 • and 90 • ) and eight oscillating inlet temperatures among which the frequencies are 1 Hz, 2.5 Hz, 5 Hz and 10 Hz, and amplitudes are 0.25, 0.5, 1 and 2, are selected to explore the impact on melting process. The results indicate that shortening helix pitch and increasing fin number can accelerate the melting rate, while the selection of these two parameters needs to consider the thermal storage p

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Author

Ning Zhang; Xing Cao; Xiyan Fan; Lei Chen; Yongtao Qu

Publisher

Elsevier BV

Published

2024

Language

EN

Field

Engineering (Physical Sciences)