Fig nbsp displays the time wise variations of
Trp  analysed both numerically and experimentally the transient heat transfer phenomenon during melting and solidification of paraffin in a shell-and-tube latent thermal BI2536 storage system with water as HTF. An experimental apparatus has been constructed and a series of melting and solidification experiments for determining HTF and PCM time wise temperature variations have been performed. Akgun et al.  and  analysed experimentally the latent thermal energy storage system of the shell-and-tube type with three kinds of paraffin as PCMs. The effects of Reynolds number and Stefan number on the melting and solidification were examined. In order to improve the heat transfer during the melting and freezing, the shell surface, i.e. the outer surface of the PCM storage container, is inclined with an inclination angle of 5°.
Ait Adine and Qarnia  studied numerically a latent heat storage unit consisting of a shell-and-tube filled with two phase change materials, P116 and n-octadecane. It is found marsupials for low mass flow rate (10−4 kg/s), high thermal storage efficiencies are obtained for LSHU2 using two PCMs. When a mass flow rate reaches a moderate value (10−3 kg/s), the LHSU2 is more efficient for lower inlet temperature only (55 °C). For greater HTF inlet temperature, the LHSU2 is more efficient for partial storage only. For higher mass flow rate (10−2 kg/s), the LHSU2 is more efficient for partial storage only.