The variable air volume system of laboratory fume hoods refers to adjusting the exhaust volume of the fume hood to adapt to the air flow requirements under different working conditions, thereby achieving energy saving and more effective ventilation control. This type of system usually automatically adjusts the air volume of the fume hood to provide optimal ventilation based on work needs and air quality monitoring within the laboratory.

Here is some important information and how laboratory fume hood variable air volume systems work:

Working principle:

Air quality monitoring: Variable air volume systems often integrate air quality sensors to monitor the concentration of pollutants or other indicators in the air in the laboratory. These sensors can detect the presence of chemical vapors, particulate matter, or other harmful substances.

Air volume adjustment: Based on the air quality monitoring results, the system can automatically adjust the exhaust volume of the fume hood. When the concentration of pollutants detected exceeds the set safety threshold, the system will increase the air volume of the fume hood to enhance air freshness and removal of pollutants. On the contrary, when the air quality is good, the system will reduce the air volume to save energy and maintain proper ventilation.

Energy saving advantages:

Air supply on demand: The variable air volume system can supply an appropriate amount of fresh air according to actual needs to avoid energy waste caused by excessive ventilation.

Automatic adjustment: The system's automatic adjustment function ensures that energy consumption is minimized and the efficiency of the ventilation system is improved while maintaining safety.

System composition:

Sensor: Sensor used to monitor air quality and environmental parameters, such as gas concentration sensor, temperature sensor, etc.

Controller: Controls the operating speed and air volume of the fume hood fan based on the information fed back by the sensor.

Fan and air volume adjustment device: adjust the exhaust volume of the fume hood according to the instructions of the controller.

Advantages and applications:

Strong adaptability: able to adapt to changes in different experimental conditions and workloads.

Environmental protection and energy saving: Reduce energy consumption and impact on the environment by intelligently adjusting air volume.

Improve safety: Ensure the air quality in the laboratory meets standards and protect the health and safety of experimental personnel.

When selecting a laboratory fume hood variable air volume system, consider the specific needs of the laboratory, the type and size of the fume hood, and the reliability and cost-effectiveness of the system. The design and use of such systems should comply with relevant safety standards and regulations to ensure safe and efficient laboratory operations.