“…When compared to the other PCMs, paraffins are most highly recommended for passive solar thermal energy storage by LHTES method (Zalba et al, 2003;Bo et al, 1999;El-Kotb et al, 2006). Paraffins as PCMs have also some advantages such as low vapor pressure, non-reactive, negligible super cooling, selfnucleating behavior, good thermal reliability, readily available in a wide range of phase change temperatures, and low cost (Abhat, 1983;Zalba et al, 2003;Himran et al, 1994;Hadjieva et al, 1992;Kaygusuz and Sarı, 2005).…”