## 3 Results and Discussion
### Continental System
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Commercial Name/Composition**} & \multirow{2}{*}{**Type**} & **Melting** & **Phase Change** & **Thermal** & \multirow{2}{*}{**Density**} & \multirow{2}{*}{**Reference**} \\  & & **Temperature** & **Enthalpy** & **Conductivity** & & **(kg/m\({}^{3}\))** & \\  & & **(\({}^{\circ}\)C)** & **(kJ/kg)** & **(W/m-K)** & & & \\ \hline A50 & Organic (n.a) & 50 & 218 & 0.18 & 810 & [20] \\
0500- Q50 BioPCM & Organic (bioPCM) & 50 & 200–230 & 0.2–0.7 (s) & 850–1300 (I) & [21] \\  & & & 0.25–2.5 (s) & 900–1250 (s) & [21] \\  & & & 0.14 (I) & 899 (I) & \\  & & & 0.21 (s) & 961 (s) & \\ RT54 HC & Organic (paraffin) & 53–54 & 200 & 0.2 & 850 (s) & [19] \\  & & & 0.17 (I) & 940 (s) & [27] \\  & & & 0.29 (s) & 940 (s) & [26] \\  & & & & 0.26 (s) & [26] \\  & & & 0.16 (s) & 841 (s) & \\  & & & 0.14 (s) & 935 (s) & [23] \\
0500- Q56 BioPCM & Organic (bioPCM) & 56 & 200–230 & 0.2–0.7 (s) & 850–1300 (I) & [21] \\  & & & 0.25–2.5 (s) & 900–1250 (s) & [21] \\  & & & & 0.25–2.5 (s) & 900–1250 (s) & [26] \\  & & & & & 862 (I) & [26] \\ PureTemp 58 & Organic (bio-based) & 58 & 225 & 0.15 (I) & 810 (I) & [25] \\ AS8H & Organic (n.a) & 58 & 243 & 0.18 & 820 & [20] \\
66.79: Polyethylene oxide & Organic (plastic + & & & & \\
10000 + 33.3\% Myristic acid & Organic (plastic + & & & & \\ acid & fatty acid) & 58.7 & 191 & n.a. & n.a. & [28] \\ Climest C58 & Inorganic (salt & & & & \\  & & & & & \\  & & 55–58 & 260 & 0.47 (I) & 1400 & [29] \\  & & & 58 & 80 & 0.5–0.7 & 1460 & [30] \\  & & & 55–60 & 153 & n.a. & n.a. & measurements \\  & & & & & & \\ Paraffin C27 & Organic (paraffin) & 58.8 & 236 & n.a. & n.a. & [31] \\ RT60 & Organic (paraffin) & 58–60 & 214 & 0.2 & n.a. & [30] \\ Stearyl literature & Organic (tester) & 59.2 & 214.75–214.93 & n.a. & n.a. & [26] \\ PureTemp 63 & Organic (bio-based) & 63 & 206 & 0.15 (I) & 840 (I) & [25] \\  & & & & 0.25 (s) & 920 (s) & \\ RT64 HC & Organic (n.a.) & 63–65 & 250 & 0.2 & 880 (s) & [19] \\ Stearyl arachid & Organic (cseft/n\({}_{\text{C}}\)) & Organic (tester) & 64.96 & 226 & n.a. & 2350 (I) & [26] \\
50\% CH\({}_{3}\)CONH\({}_{2}\) + 50\% & Organic (eutectic) & 65 & 218 & n.a. & n.a. & [31] \\ C\({}_{2}\)H\({}_{3}\)COOH & Organic (bioPCM) & 65 & 200–230 & 0.2–0.7 (I) & 850–1300 (I) & [21] \\
0500- Q65 BioPCM & Organic (bioPCM) & 65 & 200–230 & 0.2–0.7 (I) & 850–1300 (I) & [21] \\  & & & 0.25–2.5 (s) & 900–1250 (s) & [21] \\  & & & & & \\ saxVE FS 65 & Organic (biol/or organic material) & 66–68 & 218 & 0.25 (s) & 842 (s) & [23] \\  & & & & & 0.15 (I) & 870 (I) & [25] \\  & & & & & 0.2–0.7 (I) & 850–1300 (I) & [21] \\  & & & & & \\  & & & & & 0.25–2.5 (s) & 900–1250 (s) & [21] \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Pre-selected PCM for the Continental system and some of their thermophysical properties as reported in the literature. The best three PCM candidates, i.e., RT64 HC, PureTemp63, and TH5860, were characterized in the laboratory. Figure 5 shows the results of the DSC analysis of different samples after 0, 10, 100, 1000, and 8000 cycles. Both RT64 HC and TH5860 show fairly good stability even after 8000 cycles, while PureTemp63 shows an increase in the hysteresis from 3 \({}^{\circ}\)C to 6 \({}^{\circ}\)C after only 100 cycles. From this point of view, RT64 HC and TH5860 are suitable options for this application. Figure 4: Score obtained by each of the pre-selected PCM candidates in Scenario 1 for the CON system. Figure 5: DSC analysis of the cycled PCM. (**a**) RT64 HC; (**b**) PureTemp 63; (**c**) THP5860. The results of the FT-IR analysis performed with the same cycled PCM are shown in Figure 6. No significant changes can be observed in the three PCM as a consequence of the thermal cycling, especially for THP5860, whose spectral curves are practically the same for all cycle numbers. The results of the TGA analysis of the same PCM candidates as above are shown in Figure 7.  
Figure 6: FT–IR analysis of the cycled PCM. (a) RT64 HC; (b) PureTemp 63; (c) THPS860. Figure 7: TGA analysis of the cycled PCM.