During the operation of refrigeration compressors, increased exhaust temperature or oil temperature is a common problem. This may be due to a variety of reasons, including excessive compression ratio, decreased cooling effect of water-cooled oil coolers, etc. In order to help everyone better understand and deal with this problem, this article will list 6 possible reasons and give corresponding treatment methods.
1. Excessive compression ratio
The compression ratio refers to the ratio of the pressure of the gas inhaled by the compressor to the gas discharged. When the compression ratio is too large, it will cause the exhaust temperature to rise. Therefore, we need to detect the suction and exhaust pressures and take measures to reduce the pressure ratio to prevent the exhaust temperature from being too high.
2. Decreased cooling effect of water-cooled oil cooler
The water-cooled oil cooler is an important component for reducing oil temperature. If its cooling effect decreases, it will cause the oil temperature to rise. At this time, we can try to clean the oil cooler to ensure its good cooling effect. At the same time, lowering the water temperature or increasing the amount of water can also improve the heat dissipation capacity of the cooler, thereby reducing the oil temperature.
In addition, there may be other reasons for the increase in the exhaust temperature or oil temperature of the refrigeration compressor, such as leakage in the refrigeration system, condenser failure, etc. When dealing with these problems, we need to consider various factors comprehensively and take corresponding measures to ensure the normal operation of the refrigeration compressor.
3. Insufficient liquid supply of liquid ammonia oil cooler
When the liquid supply of liquid ammonia oil cooler is insufficient, it will cause the exhaust temperature or oil temperature to rise. Therefore, we need to analyze the cause and increase the liquid supply to ensure that the cooler can effectively reduce the temperature.
4. Inhalation of severely overheated steam
If the steam inhaled by the refrigeration compressor is severely overheated, it will also cause the exhaust temperature or oil temperature to rise. At this time, we can take measures such as increasing the liquid supply, strengthening the insulation of the suction pipe, and checking whether the bypass valve is leaking to improve this situation.
5. Insufficient oil injection
Insufficient oil injection is another possible reason for the increase in exhaust temperature or oil temperature. We need to check and analyze the cause, and then increase the oil injection appropriately to ensure that the refrigeration compressor can operate normally and reduce the temperature.
6. Air infiltration in the system
If air infiltrates the refrigeration system, it may also cause the exhaust temperature or oil temperature to rise. In this case, we should discharge the air in time, check the cause of air infiltration and repair it to restore the normal operation of the system.