NUMERICAL STUDY OF HEAT STORAGE PERFORMANCE IN PHASE CHANGE ENERGY STORAGE ENHANCED BY FINS

Yu Jingmei; Liu Yaohong; Zhang Fengzhong; Zhang Shixuan

doi:10.19912/j.0254-0096.tynxb.2022-0123

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (6) : 78-83. DOI: 10.19912/j.0254-0096.tynxb.2022-0123

NUMERICAL STUDY OF HEAT STORAGE PERFORMANCE IN PHASE CHANGE ENERGY STORAGE ENHANCED BY FINS

Yu Jingmei¹, Liu Yaohong¹, Zhang Fengzhong², Zhang Shixuan³

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Abstract

In order to improve the phase change energy storage effect in cube heat storage units, the melting effect of phase change materials after inserting fins was studied by numerical methods, and the influence of increasing the number of fins and changing the insertion position of fins on the melting rate of PCM was compared. The results show that the melting rate of PCM is significantly improved after the fins are inserted. Compared with the three-fin structure, the performance of single-fin and dual-fin energy storage units is improved with the increase of L_R,f. The dual-fin energy storage unit with 0.75 L_R,f of cube heat storage unit has better performance, and the PCM melting time is improved 193% compared with the non-fin structure. The downward shift of fins is helpful to shorten the PCM melting time, and 0.54H_R,f structure has a better effect on PCM melting.

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heat storage / numerical methods / phase change materials / cube energy storage unit / fins

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Yu Jingmei, Liu Yaohong, Zhang Fengzhong, Zhang Shixuan. NUMERICAL STUDY OF HEAT STORAGE PERFORMANCE IN PHASE CHANGE ENERGY STORAGE ENHANCED BY FINS[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 78-83 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0123

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