Air handling units (AHUs) are critical components of commercial and industrial HVAC systems. They are responsible for controlling the temperature, humidity, and air quality within a building. To ensure optimal performance, AHUs rely on complex control systems that regulate airflow, temperature, and other key variables.

Self-control systems in AHUs are designed to optimize performance and energy efficiency. They use a range of sensors and actuators to monitor and adjust key variables such as airflow, temperature, and humidity. The system is usually comprised of a central controller that communicates with various sensors and actuators located throughout the AHU.

One of the most important sensors used in AHU self-control systems is the temperature sensor. These sensors are typically located in the supply air duct and return air duct of the AHU. They measure the temperature of the incoming air and the air leaving the AHU. This information is used to adjust the heating and cooling systems within the AHU, ensuring that the air leaving the unit is at the desired temperature.

Humidity sensors are also critical components of AHU self-control systems. These sensors measure the relative humidity of the air and adjust the humidity control systems within the AHU to maintain the desired humidity levels. This is especially important in environments that require precise humidity control, such as hospitals, laboratories, and clean rooms.

Airflow sensors are another important component of AHU self-control systems. They measure the flow rate of air through the AHU and adjust the fan speed to maintain the desired airflow. This is important for maintaining the correct pressure within the building and ensuring that the air quality remains at a high standard.

In addition to sensors, AHU self-control systems also use a range of actuators to adjust the various components of the AHU. For example, the dampers within the AHU may be adjusted to regulate the airflow, while the heating and cooling systems may be adjusted to maintain the desired temperature. These actuators are controlled by the central controller, which uses algorithms to optimize the performance of the AHU.

In conclusion, self-control systems are critical components of modern AHUs. They use a range of sensors and actuators to monitor and adjust key variables such as temperature, humidity, and airflow. These systems ensure that the AHU operates at peak performance, while also maximizing energy efficiency and maintaining a high standard of air quality. As such, they are essential for any commercial or industrial building that relies on HVAC systems for temperature and air quality control.