Calculation of flow rate in the vent pipe at the top of the tower
Thread Content
The top vent pipe has a diameter of DN150; the medium flowing through it is coke oven gas. The pressure inside the tower at the time of venting is 3 KPa. How can the flow rate of the vented gas be calculated?
I think that since the pressure at the top of the tower is relatively low, at only 3 kPa, based on experience the flow velocity should be around 4–6 m/s; taking 6 m/s as the value, the flow rate Q = uA = 0.785*0.15^2*6*3600 = 381.51 m3/h.