Preparation, thermal properties and thermal reliability of eutectic mixtures of fatty acids/expanded vermiculite as novel form-stable composites for energy storage

Preparation and characterization of capric-myristic-stearic acid eutectic mixture/modified expanded vermiculite composite as a form-stable phase change material

“…It can be seen from Fig. 5(a) that the EV shows typical lamellar morphology and consists of thick aggregates of particles [21,22]. The EVC maintains the lamellar morphology, suggesting that EV shows no significant change in morphology after carbonizing [ Fig.…”

“…Thermal properties of the CA-MA-SA and composite PCMs are given in Table 4 .03°C, respectively. The slight decrease in phase change temperature is due to the weak attractive interaction between CA-MA-SA molecules and inner surface wall of the porous supporting matrices [22].…”

“…Although the prepared composite PCM was thermally stable and chemically inert, the thermal conductivity of composite PCM was low (0.1569 W/mK). Karaipekli and Sari [22] reported that the thermal conductivities of fatty acids/expanded vermiculite composite PCMs were increased in the range of 104-150% by addition of 10 wt% expanded graphite. Guan et al [23] implanted network carbon in vermiculite layers by in-situ carbonizing sucrose to enhance the thermal conductivity of paraffin/expanded vermiculite composite.…”

Effects of various types of graphite on the thermal conductivity and energy storage properties of ternary eutectic fatty acid-based composite as phase change material

“…Our main aim was to develop a PCM with a melting temperature below 20 °C (Oró et al 2012); CA-LA in the mass ratio of 64:36 was obtained at T m 19.62 °C (Karaipekli and Sarı 2010), but MA-PA in the mass ratio of 60:40 was obtained at T m 47.08 °C (Fauzi et al 2013). From Eq.…”

“…Paraffin materials have been widely used owing due to desirable thermal characteristics, such as minimal supercooling, varied phase change temperature, low vapor pressure in the melt, good thermal, chemical stability and self-nucleating behavior (Sharma et al 2009;Baetens et al 2010;Regin et al 2008;Kenisarin 2010). Among the organic PCMs evaluated fatty acids are promising and then paraffin-based materials fatty acid have suitable phase change temperature, high latent heat capacity and easy manufacturing from common vegetable and animal oils (Oró et al 2012;Yuan et al 2014a, b;Karaipekli and Sari 2008;Sari and Kaygusuz 2002;Li et al 2011;Yanping et al 2011;Karaipekli and Sarı 2010).…”