Freezing is an important thermal phenomenon in Latent heat Energy Storage Systems with applications in renewable energy.
Freezing of a pure material at its melting point occurs on a cooled surface, conduction controls freezing rate . The material
used is known as Phase Change Material (PCM). From literature, it is known that interface during progression of freezing
may vary from smooth to rough surface depending on the PCM which significantly influences partial/total freezing times.For
example, freezing of n-Octadecane in cylinders and annuli, the interface is covered with crystals. The density difference between
solid and liquid causes a hollow core during freezing. The rate of freezing and total time vary on several factors including Stefan
number, solid- liquid density ratio and interface behavior even for Conduction ?Controlled freezing.
In the present work, experimental data of freezing mass ?time are obtained for freezing of PCMs in vertical cylinders under
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