I would like to ask how many times per day each programmable valve in PSA 8—2—4 is opened and closed?
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I would like to ask how many times per day each programmable valve in PSA 8—2—4 is opened and closed? Is there a good way to calculate it quickly?
The operation of each valve is different. First, determine the number of times a single valve operates during one adsorption cycle, as well as the duration of each adsorption period, and then calculate the number of adsorption cycles per day
Assuming that it takes 600 S for the adsorption tower to go from an adsorbed state to the next adsorbed state (i.e., the cycle time is 600 S), the number of cycles per hour is 3600/600 = 6, and the number of cycles per day is 24*6 = 144. Within one cycle: valves for pressure equalization perform both descending and ascending operations 2 times each, so their total number of operations per day is 144*2=288; valves for forward flow, reverse flow, purging, adsorption, etc. perform only 1 operation each, so their total number of operations per day is 144*1=144. The minimum number of operations per day for utility valves such as those used in final elevation processes is: 144 * total number of adsorption towers. I hope this helps.
Your reasoning is mostly correct, but your approach to the calculations isn’t entirely comprehensive; some programmable valves are responsible for both the second and third stages, so the number of times they open per cycle isn’t 2, but rather multiplied by 4.
Under normal circumstances, a pressure equalization valve is used for two instances of pressure equalization; as mentioned above, situations where the second and third stages of equalization take place on the same valve do exist. However, as long as there is no isolation between the second and third stages, the valve will not close at the end of the second stage of equalization and the start of the third stage, since there is no need for it to do so. Therefore, in such cases, the value is multiplied by 2.
That makes sense! When the two averages and three averages are connected, generally, the increase of the two averages continues after the increase of the three averages, or the decrease of the two averages continues after the decrease of the three averages; it does not switch off/on in between. Just as Ikun and Shouchu go together, Ikunshou technology performs the final charging.