## 4 Results and Discussion  
### Transient Data  
Typically, in an actual adsorption system, the optimum adsorption capacity of the adsorbent would be determined from the experimentally defined equilibrium data of the given system. This is dependent on several factors, including the adsorption bed geometry, binding material, thickness of the adsorption material, etc. However, with the information on the adsorption kinetics of the material, we can predict such behavior with sufficient precision, or at least exclude the effect of the adsorption material and consider it as negligible. Figure 5 shows the transient data of the adsorption kinetics at 30 \({}^{\circ}\)C.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Desorption** & **Adsorption** & **Condensation** & **Evaporation** \\
**Temperature** & **Temperature** & **Temperature** & **Temperature** \\ \hline
60–80 \({}^{\circ}\)C & 30 \({}^{\circ}\)C & 30 \({}^{\circ}\)C & 5 \({}^{\circ}\)C \\ \hline \hline \end{tabular}
\end{table}
Table 4: The temperature condition of the adsorption cycle.  
\begin{table}
\begin{tabular}{c c} \hline \hline
**Coefficient** & **MSC-30** \\ \hline \(a_{0}\) & 0.76627 \\ \(a_{1}\) & 3.8768 \(\times\) 10\({}^{-4}\) \\ \(a_{2}\) & 6.2667 \(\times\) 10\({}^{-6}\) \\ \(a_{3}\) & 7.2600 \(\times\) 10\({}^{-8}\) \\ \hline \hline \end{tabular}
\end{table}
Table 3: The coefficient of specific heat capacity of the adsorbent.  
The transient data show the temperature elevation during the exothermic adsorption process in time and clearly demonstrate the equilibrium time dependency. We observed that it takes around 400 s to stabilize the temperature after starting the adsorption process fully. This is comparable to the previous experimental findings on MSC-30/R134a pair or MSC-30/R32 as reported by [PERSON] et al. [17] and [PERSON] et al. [57], respectively. The transient data described by [PERSON] et al. [57] may arguably suggest faster kinetics of MSC-30/R32 pair; however, the method used was adjusted, and the whole process is controlled with emphasis on temperature stability, which explains the increase in the apparent adsorption rate. Accordingly, if the temperature of the adsorbent is allowed to increase excessively, the adsorption equilibrium will be shifted downwards, and the equilibrium can be reached only once the material reaches the target temperature again. In this work, the highest temperature of the system reached around 8 \({}^{\circ}\)C, corresponding to the highest adsorption increases. From Figure 5, it is apparent that the lower values the temperature reached from the set temperature, the faster the equilibration occurred. Typically, in the beginning, the adsorption temperature increased for a while by self-heating, while in most of the pressure cases, this effect reached a peak within around 20 to 30 s. As the whole process is exothermic, thermal energy is constantly being ejected during the procedure until the equilibrium state is reached in about 400-500 s. Similar results, when the transient data peak around the 20 s mark, were also demonstrated by [PERSON] [29] when expressing the kinetic data for MSC-30/R134a pair (at 5 \({}^{\circ}\)C), MSC-30/R410a pair (at 15 \({}^{\circ}\)C), and MSC-30/R507a pair (at 5 \({}^{\circ}\)C). In this context, the important finding is that the adsorption kinetics of the R1234 vf are comparable to the previously reported refrigerants on MSC-30 adsorbent.