What is the Shiqiang line controlled by the propylene refrigeration unit?
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In the surge control of propylene refrigeration units, the concept of the rock wall line is often mentioned. What exactly does it refer to, and what is its relationship with surge?
Compressors have a surge line determined by factors such as pressure and flow rate; they are prone to surging when the flow rate is low. The term \"Shi Wall Line\" might be some common way of referring to it – you can check Baidu for more details.
A reminder from the design institute: The stone wall line represents the limit line; in other words, when the flow rate increases to a certain level, it’s as if it has hit a wall and can no longer increase further, having reached its limit.
https://www.enggcyclopedia.com/2012/02/compressor-choke-stonewall/ Check this out; it has a detailed explanation