Automatic control technology has been increasingly used in various types of air conditioning systems, which has played a great role in the energy-saving and optimized operation of the system. As an essential part of the control system, environmental sensors are playing an increasingly important role in the subway.
Concentration sensor temperature and humidity sensor sensor technology
The subway has become an effective form of human use of underground space, which has fully relieved the city's ground traffic. With its large traffic volume, good punctuality, fast and safe, high traffic efficiency, and environmental protection, it has become the focus of modern urban underground space construction. . However, during the operation of the subway, the power consumption of the environmental control (environmental control) system accounts for a considerable proportion, especially the power consumption of the environmental control system with air conditioning accounts for about 40% of the entire subway power consumption. However, in order to provide passengers with a comfortable and comfortable thermal environment, there must be a subway environmental control system.
Therefore, how to take energy-saving measures in the environmental control system is of great significance. The traffic volume of the subway is large, that is, the passenger flow is large, and the required fresh air volume changes greatly. Therefore, the air conditioning load of the subway varies greatly, and energy saving must be achieved by means of automatic control. Automatic control technology has been increasingly used in various types of air-conditioning systems. In systems with concentrated refrigeration equipment and a wide range of operating conditions, automatic control technology has played a great role in optimizing the energy-saving operation of the system. As an essential part of the control system, environmental sensors are playing an increasingly important role in the subway.
In the environmental control system of the subway, we used indoor temperature and humidity sensors, pipeline temperature and humidity sensors, and Co2 concentration sensors.
We can install indoor temperature and humidity sensors in public areas such as the station hall and platform area of ​​the station and in important equipment rooms to monitor the real-time temperature and humidity of the station. These parameters can help the operator to make reasonable adjustments to the working conditions of the various systems of the station, to keep the public area of ​​the station always in a more comfortable environment, and to ensure that the equipment room is always under the appropriate temperature. The indoor temperature and humidity sensor is generally installed on the wall or roof of the station hall, platform and equipment room.
At the same time, we can install duct temperature and humidity sensors in the fresh air room and return air room of the station to monitor the outdoor fresh air and the temperature and humidity in the station. The environmental control system can judge the environmental quality of the station based on the data collected by the sensors, and automatically switch according to the pre-designed various working conditions to realize the automatic control of the station environment by the automatic control system, so that the station environment is always in a relatively In a comfortable environment, and ultimately achieve the purpose of energy saving and emission reduction. Pipe temperature and humidity sensors are generally installed on the walls of the fresh air chamber and return air chamber.
We can also install a Co2 concentration sensor in the return air room of the station to monitor the concentration of Co2 in the station. At the station, the concentration of Co2 will increase due to human breathing. When the concentration of Co2 is at a large value, the air quality of the current station poses a threat to the health of passengers. Therefore, the operator can collect the concentration based on the Co2 concentration sensor. The data adjusts the working conditions of the public area of ​​the station in time to ensure that the air quality of the station is always in good condition.
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