Questions regarding the calculation of air consumption for pneumatic valves

Thread Content

When calculating the air consumption for pneumatic valves, the \"Design Code for Gas Supply in Petrochemical Instrumentation\" is generally used as a reference. The design capacity of the instrument air supply system can be estimated directly based on on-site experience: ’s0 W. B9 ^# h. p 1 The air consumption per control valve is calculated at 1–2 m3/h (standard conditions). 2 The air consumption for other pneumatic instruments installed on-site is calculated at 0.5–1 m3/h (standard conditions). 3 The air consumption for pneumatic instruments installed in the control room is calculated at 1 m3/h (standard conditions). 7 D& i2 Z6 T3 d( J& j8 F 4 Positive-pressure ventilation and explosion-proof instrument cabinets are designed with an air exchange rate of more than 6 times per hour. 5 Air consumption for special equipment. 6 Air consumption measured using the backwashing method. However, for some pneumatic on/off valves that are not operated frequently, or those that operate at different times, the air consumption can sometimes be calculated based solely on the number of valves that are open at the same time. Instead of calculating it based on the total. I hope all fellow sailors can offer me lots of guidance