Problems that often occur in propylene refrigeration compressors during startup, shutdown, and normal operation, along with solutions
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As the title suggests, propylene refrigeration compressors have a four-stage anti-surge system, and since the demand for cooling capacity can vary significantly, these compressors are more prone to unstable shutdowns when started or stopped. I would like to ask if other users have encountered this issue and how they resolved it
And which control system is everyone using?
In terms of compressor control for individual units, propylene refrigeration compressors are among the most challenging; just the calculation of those four surge lines and the storewall line requires considerable effort. Who built the system in your home – Shengyu or Kangjisen?
It’s not decided yet, that’s why I’m coming here for advice. Thank you! If Shengyu and Kangjisen use the same hardware, then the difference should not be significant. I’m not sure whether CCC will yield better results
Level 4 compression? It’s quite complex; we have single-screw propylene refrigeration compressors!
To avoid trouble in the future, I recommend using CCC if the price is acceptable.
The start-up and shutdown process of a refrigeration compressor is more complex than that of a regular compressor, with more constraints; it is necessary to take various factors into account when establishing the logic and timing for startup. If the project owner has a sufficient budget, then CCC is definitely the best choice. Kangjisen’s system control should also be fine; it’s just that more manual intervention may be required during operation in the later stages. I’ve also heard that CCC has a Quench function designed specifically to regulate the temperature of the refrigeration unit, which can effectively improve the efficiency of the refrigerant usage and reduce energy consumption.
Well, I’d like to see how good CCC’s one-click startup really is as well, but it depends on what the manager decides, after all, the price is a factor here :)
The Tricon system I used in the past had difficulty closing its anti-surge valve when starting up; it might be a one-off case. After all, ITCC has a strong track record. What does the startup sequence for propylene refrigeration compressors entail? I would appreciate your guidance; thank you!
The stone wall line is the stone line
It seems that stone wall lines are not installed in all cases; it’s not clear what the difference is in terms of manufacturing processes between installing such lines and not installing them