## 3 Results and Discussions
According to Figure 17, it is seen that the total pressure value increases to the highest values in localizations where the temperature difference is high; it reaches 100286.54 Pa in the entrance region and 98,891.23 Pa can be observed in the exit region. In Figure 18, the distribution of total pressure contours is simulated for the H\({}_{2}\)O external fluid volume at \(Z\) = p00.0 [cm]. As a result of the analyses, the total pressure value could reach maximum values of \(-6.93\) Pa and 53.70 Pa. According to Figure 18, it is seen that the total pressure value increases to the highest values in localizations where the temperature difference is high; it is in the red scale with a value of 52.96 Pa in the entrance region, and can be observed in the blue scale with a value of 6.58 Pa in the exit region. In Figure 19, the distribution of velocity contours is simulated for the R152a internal refrigerant volume at \(Z\) = p00.0 [cm]. Figures 19 and 20 are graphs showing velocity and flow line contours in the inner and outer fluid volumes. Velocity represents the speed of the fluid, while the flow line shows how the fluid moves along its path. Velocity is demonstrated in a simulation in which the behavior of two different fluids with the multiphase effect is examined in the process of cooling the hot water coming from the process with the R152a refrigerant. As a result of the analyses, the velocity value could reach maximum values of 1.29 Pa and 20.83 Pa. According to Figure 19, it is seen that the velocity value increases to the highest values in localizations where the temperature difference is high; it is in the red  
Figure 6:3 Contour of total pressure of R152a volume at \(Z\) = p00.0 [cm]. Figure 6:4 Contour of total pressure of H\({}_{2}\)O volume at \(Z\) = p00.0 [cm]. scale with a value of 17.68 Pa in the entrance region, while it can be observed in the green scale with a value of 11.69 Pa in the exit region. In Figure 20, the distribution of velocity contours is simulated for the H\({}_{2}\)O external fluid volume at \(Z=\) p00.0 [cm]. Velocity is demonstrated in a simulation in which the behavior of two different fluids with the multiphase effect is examined in the process of cooling the hot water coming from the process with the R152a refrigerant. As a result of the analyses, the velocity value could reach maximum values of 0.0117 Pa and 0.0926 Pa. According to the analysis results, where there is a non-homogeneous distribution according to Figure 20, the velocity value is in the turquoise scale with a value of 0.0229 Pa in the entrance region, while it can be detected in the yellow-green scale with a value of 0.0548 Pa in the exit region. Figure 6:5 (**a**) Contour of velocity of R152a volume at \(Z=\) p00.0 [cm]; (**b**) contour of streamline velocity of R152a volume at \(Z=\) p00.0 [cm]. In Figure 21, the distribution of temperature contours is simulated in a compact manner for H\({}_{2}\)O and R152a at \(Z\) = p00.0 [cm], specific to the inner and outer fluid volumes. Figures 21-23 are graphs showing the temperature distribution in the inner and outer fluid volumes. Temperature changes reflect heat transfer and thermal performance in the system. Temperature differences in the inlet and outlet regions show how heat transfer occurs in the system. Temperature distributions are shown in a simulation in which the behavior of two different fluids with the multiphase effect is examined during the cooling of hot water coming from the process by the R152a refrigerant. As a result of the analysis, the temperature value could reach maximum values of 20.59 \({}^{\circ}\)C and 63.58 \({}^{\circ}\)C. According to the analysis results, where there is a distribution with transitions according to Figure 21, the temperature value is in the red scale at 60.98 \({}^{\circ}\)C in the entrance region, while it can be detected in the green scale at 42.79 \({}^{\circ}\)C in the exit region.