首页>
外文期刊>Journal of Energy Storage
>Numerical study on thermal and melting performances of a horizontal latent heat storage unit with branched tree-like convergent fins
【24h】
Numerical study on thermal and melting performances of a horizontal latent heat storage unit with branched tree-like convergent fins
展开▼
机译：Numerical study on thermal and melting performances of a horizontal latent heat storage unit with branched tree-like convergent fins
To improve the energy storage efficiency of the latent heat storage (LHS) system, the present work proposes a horizontal LHS unit embedded with branched tree-like convergent fins (BTCF) and numerically investigates the influences of various geometric and structural parameters of the BTCF including initial fin number N, maximum branching level m, length ratio alpha of fins at two successive levels, root-to-head width ratio beta of the convergent fin, angle between the angular bisector of the outermost branch with the axis of upper-level branch delta and branching angle theta i on the thermal and melting performances of the LHS system when the total fin volume is fixed. The results indicate that increasing the value of N, m, and alpha can effectively improve the heat transfer between the fin and phase change material (PCM) and fasten the melting rate of PCM and energy storage. Further, the complete melting time of the PCM first drops and then rises with the increase of beta and delta, which means there exists an optimal geometric structure for the BTCF to achieve the best heat transfer and melting performances. theta i also displays a non-monotonic effect on the complete melting time of the PCM, and the BTCF with the branching angle of theta i = 70 degrees has the best melting performance compared with the cases with theta i = 50 degrees and 90 degrees in this work.
展开▼
