Determination of the exhaust fan airflow
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As shown in the figure, the smoke inlet flow rates and temperatures for each device have been determined; the smoke inlet temperature of the fan is 120°C. How can the fan’s air volume be determined? ? 15,000 Nm3/h? ? ?
What is unclear now is that when the combustion chamber temperature is 1150°C, the flue gas volume under operating conditions is 78186 m3/h; should the fan flow rate be calculated based on 78186 m3/h or on 15000 Nm3/h?
Is the value of 25,000 at the bag filter the standard flue gas volume? If converted based on this amount of flue gas, it corresponds to the air volume under 120-degree conditions. However, the standard smoke volume specified earlier was 15,000; I don’t understand why it suddenly increases to 10,000 here. If the value of 25,000 is incorrect, then the air volume under conditions of 120 degrees should be calculated using the standard smoke volume of 15,000.
For calculating the air volume of exhaust fans, you can refer to this software: http://wx.ezeng1.com/IDFFL/IDFFL.aspx
For calculating the air volume of exhaust fans, you can refer to this software: http://wx.ezeng1.com/IDFFL/IDFFL.aspx