In the current context of establishing standards for indoor air quality across various domains, the concentration of indoor CO2 is consistently mandated to remain below 1000 ppm. In normal circumstances, atmospheric CO2 concentration typically hovers around 400 ppm. Thus, the monitoring of air quality is inseparable from the application of high-precision carbon dioxide sensors.
Heating, ventilation, and air conditioning (HVAC) systems represent essential components for maintaining indoor comfort. To minimize energy loss, nearly sealed heating and cooling systems are employed. Depending on factors such as the number of occupants or activities like gas cooking within a room, air quality can decline. This can be assessed through the measurement of CO2 levels. The achievement of energy-efficient HVAC systems also significantly relies on the integration of CO2 sensors, particularly within what's referred to as Demand Controlled Ventilation (DCV) systems. These systems utilize CO2 sensors to real-time monitor indoor CO2 concentrations, facilitating the controlled introduction of fresh outdoor air based on the prevailing CO2 levels. This approach avoids continuous fresh air circulation, thereby reducing unnecessary energy consumption.
The significance of maintaining low CO2 concentrations extends beyond its direct impact on the immediate environment; it also positively affects work status and efficiency. It signals the presence of ample fresh air, significantly mitigating the risk of sick building syndrome. Therefore, CO2 sensors play a pivotal role in HVAC system control strategies. The integration of CO2 sensors is essential for realizing precise demand-based control of fresh air intake, thus meeting green building standards while achieving energy efficiency.
Currently, prevalent CO2 sensors commonly adopt the Non-Dispersive Infrared (NDIR) principle. Fundamentally, this principle quantitatively analyzes the selective absorption intensity changes of infrared electromagnetic radiation by the target gas, CO2. When using such sensors, it's crucial to select those that can consistently maintain stable and reliable measurement accuracy and performance.
In conclusion, the effective implementation of CO2 sensor technology significantly contributes to enhancing indoor air quality, energy efficiency, and overall occupant well-being within constructed environments.
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