Design of a Control System on the HVAC Damper to Regulate Temperature and Humidity in the Isolation Room

Most infectious diseases are caused by viruses that are spread from one person to another through the air. Isolation room is a room that keeps virus in infected people from spreading to other people by maintaining temperature and humidity. Therefore, a system is needed that regulates the isolation room to remain sterile, where this system must control and maintain the stability of air circulation in the room. For this purpose, this study proposes the design of an automated control system to regulate the temperature and humidity in an isolated room by controlling the supply air with damper. The method that is used in making this control system is experimental and analysis from sensor readings that will be used as a sign of decision-making for the damper output that will control the air flow to the isolation room with closed loop algorithm for the system control, the controller will send digital signal to the damper relay based on sensor reading, so that the data results of the experiment and analysis can see whether the control system can work well or not. The successful performance of the control system is seen from results of sensor readings; when the system changed the damper position it can maintain the isolation room situation around 22 °C to 24 °C for temperature and 50% until 60% for the humidity.