For large atmospheric-pressure storage tanks for which the required discharge volumes for inlet and outlet are known, how is the size of the discharge ports determined? ? ?
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As the title suggests, I have been puzzled by this question for a very long time; I just can’t figure it out. For PV and EV, manufacturers provide data from which the discharge volume for different pipe sizes can be determined. But for tanks used in free-air defense, how should the size of the discharge outlet be chosen? I need an expert’s help... For example, in the case of a large storage tank designed for normal pressure conditions, the calculation based on the flow rates at the inlet and outlet shows that the discharge volume required is 5000 m3 per hour. How should I determine the size of the free vent? ?
There are three options available: 1. Set it according to the number and diameter of ventilation holes specified by standards such as SH/T3007; 2. Consult the manufacturer to determine the air exchange rate for the ventilation holes and then install them. 3. Calculate based on the pressure difference, and apply appropriate amplification.