Fig. 19

Prediction of the freezing front position in region 2 at the beginning and end of each PCM cell in a 4-fin tank with longitudinal arrangement over 1600 s under the third type boundary condition with temperature \(T_{\infty } \left( t \right) = 1 + \left( {{\raise0.7ex\hbox{${\alpha_{s} t}$} \!\mathord{\left/ {\vphantom {{\alpha_{s} t} {R_{in}^{2} }}}\right.\kern-0pt} \!\lower0.7ex\hbox{${R_{in}^{2} }$}}} \right)^{2} + 50z\).