# Evaluation of Hydrogen Generation with Hybrid Renewable Energy Sources
## 3 Results and Discussion
### Turbine Power Source
#### 3.1.2 Simulation Results  
Figure 5 illustrates the performance of the turbine at various wind speeds, including the cut-off power of 1000 W. It provides a visual representation of how the turbine's power output varies with changes in wind speed, and it highlights the point at which the turbine's power generation is cut off or limited. This information is valuable for understanding the turbine's operational characteristics and its efficiency in different wind conditions. Figure 6 displays the weather data collected for Oshawa City, situated within the Markham zone, on an hourly basis. These data include information on wind speed at different times throughout the day. Analyzing these data can provide insights into the local climate and weather conditions, which are essential for various applications, including energy system simulations and environmental modelling. Figures 7-15 depict the monthly power consumption from the wind turbine and the monthly hydrogen flow rate output from the electrolysis process. These figures provide a visual representation of how the wind turbine's power generation varies from month to month and how it correlates with the hydrogen production rate via electrolysis. During the winter months, from January to April, the wind power output peaks at an average of 850 W, achieving a maximum hydrogen flow rate of 0.18 m\({}^{3}\)/h. In contrast, during the spring and summer months, from May to September, the wind power output reaches a maximum of 210 W, with a hydrogen flow rate of 0.05 m\({}^{3}\)/h. By analyzing these figures, researchers and stakeholders can gain insights into the seasonal variations in renewable energy production and hydrogen generation. This information is valuable for understanding the system's performance, assessing the impact of weather and climate on energy production, and optimizing the hydrogen production process. \begin{table}
\begin{tabular}{l l l l} \hline No. & Specification & Value & Description \\ \hline
1 & Rotor\_Ht & 2 & Rotor centre height, metres \\ \hline
2 & Rotor\_Di & 1 & Rotor diameter, metres \\ \hline
3 & Sensr\_Ht & 6 & Sensor height for data pairs given below, metres (often rotor centre height) \\ \hline
4 & Sher\_Exp & 0.16 & Power-law exponent for vertical wind profile \\ \hline
5 & Turb\_Int & 0.1 & Turbulence intensity valid for this curve \\ \hline
6 & Air\_Dens & 1.225 & Power curve air density, kg/m\({}^{3}\) \\ \hline
7 & Pwr\_Ratd & 318 & Rated power of turbine, W \\ \hline
8 & Spd\_Ratd & 9 & Rated wind speed, m/s \\ \hline
9 & Nominal turbine efficiency & 0.35 & \\ \hline \end{tabular}
\end{table} 
Table 4: Turbine specifications. \begin{table}
\begin{tabular}{l l l l} \hline No. & Specification & Value & Description \\ \hline
1 & Unit Area & 0.066 & Total area of unit (m\({}^{2}\)) \\ \hline
2 & N cells & 2 & \\ \hline
3 & IELY & 4 & Current through single electrolyzer stack (A) \\ \hline
4 & PELY & 1 & Electrolyzer pressure (atm) \\ \hline
5 & TROOM & 20 & Room temperature (\({}^{\circ}\)C) \\ \hline
6 & TELY & 50 & Temperature of electrolyzer (\({}^{\circ}\)C) \\ \hline \end{tabular}
\end{table} 
Table 5: Electrolysis specifications. Figure 5: The power curve for the wind turbine with cut-off power. Figure 6: Wind speed hourly for a location of Oshawa City, within the Markham zone. Figure 8: The relationship between input power from the wind turbine and the hydrogen flow rate over the course of an hour in the month of February. Figure 7: The relationship between input power from the wind turbine and the hydrogen flow rate over the course of an hour in the month of January. Figure 10: The relationship between input power from the wind turbine and the hydrogen flow rate over the course of an hour in the month of April. Figure 9: The relationship between input power from the wind turbine and the hydrogen flow rate over the course of an hour in the month of March. Figure 11: The relationship between input power from the wind turbine and the hydrogen flow rate over the course of an hour in the month of May.