Problem of the current in mixed-refrigerant centrifugal compressors approaching the rated current
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The current in the mixed refrigerant centrifugal compressor is close to the rated value, even though the load is not at full capacity. Regarding the refrigerant mixture, there is still a significant amount of isopentane needed. The discharge pressure in the second stage has not reached the designed level, yet the current is already close to the rated value. If more isopentane is added, will the current decrease? I would appreciate guidance from those with more experience on this issue
The current is close to the rated value, but the load has not reached full capacity; this may be due to an improper refrigerant mixture, which results in low operating efficiency of the compressor. A lack of isopentane may affect the overall cooling efficiency and system pressure, thereby impacting the current. After adding sufficient isopentane, if the refrigerant ratio is optimized, the compression efficiency should theoretically increase, which could help reduce current consumption. It is recommended to first check whether the refrigerant ratio of the system meets the design requirements, and make adjustments gradually while observing the changes in current. Please also pay attention to other maintenance requirements of the system, such as cleaning filters, to ensure the efficient operation of the compressor. .
There is too much light component and not enough heavy component
There is a high amount of light components and little heavy components; it is recommended to first vent out a portion of the high-pressure gas, and then replenish it in small amounts multiple times according to the refrigerant ratio