What type of flow meter is suitable for measuring boiler air volume?
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What type of flow meter is suitable for measuring boiler air volume?
Differential pressure instruments: Anubaa and similar ones
Airflow measurement generally refers to the flow rate at low static pressure; for this purpose, various type of orifice flow meters equipped with differential pressure sensing elements can be used, such as Anemometers, Pitot tubes, and Vortex flow meters. Since the measurement of airflow does not require high accuracy, and the diameter of the medium flow channel is large, this Bourdon tube flow meter is very suitable for such applications.
Any type of mass flow meter will do; thermal mass flow meters are also an option
If the exhaust flow rate at the chimney is monitored, the pressure difference will be very small due to the large diameter of the chimney and low flow velocity. If wet flue gas desulfurization is used earlier in the process, the sampling tube is prone to clogging, and the pressure difference experiences significant fluctuations. The monitored traffic fluctuates greatly, and sometimes the values can be extremely high or low. When selecting a probe, note that those equipped with backflow and heating functions will be more stable.
You can consult Jiangsu Weiyi; they have experience in this area. The vortex flow meters we purchased from them are of good quality.
It depends on the specific pipe diameter, flow rate, and allowable pressure loss
Although it can be measured, the thermal method is not very useful. You might try Aniu
The problem is a bit complex; the air volume of the boiler depends on where the measurement point is located. If it’s placed on the fan’s ducts, there are more options available, but if it’s located in the flue ducts, then differential pressure is basically the only option left