利用对空气流加热的方法在线测量燃气的热值，通过给燃气加入空气调整燃气热值，设计了燃气热值反馈调节系统。
A heating value feedback adjusting system was developed using the airflow heating method to measure the heating value online with air added to the gas to adjust the heating value.
备料车间预干燥排烟系统自投产以来一直是通过控制百叶阀的开启度来调节其烟气流量。
The concentrate blending plant regulates the fume volume from pre-drying fume exhaust system via controlling the opening of shutter valve.
利用对空气流加热的方法在线测量燃气的热值，通过给燃气加入空气调整燃气热值，设计了燃气热值反馈调节系统。
Using the airflow heating method to measure the calorific value on-line, and adding air to the gas to adjust the calorific value, a calorific value feedback adjusting system was developed.
应用推荐