4. In the system in the figure, a certain amount of fuel is burned with air, and superheated water vapor is produced thanks to the heat released. In this facility, the amount of water in the boiler should be kept constant at the desired level and should not fall below the critical level. According to this, a) Place the control circuit that will control the water level in the boiler on the figure. b) Draw, and interpret the control curve to be obtained if the controller you use is a PID type controller. Water Kazan Air Gas output Superheated steam Fuel A

4. In the system in the figure, a certain amount of fuel is burned with air, and superheated water vapor is produced thanks to the heat released. In this facility, the amount of water in the boiler should be kept constant at the desired level and should not fall below the critical level. According to this, a) Place the control circuit that will control the water level in the boiler on the figure. b) Draw and interpret the control curve to be obtained if the controller you use is a PID type controller