Analysis of problems caused by insufficient refrigerant of screw chiller

The screw chiller is responsible for providing industrial chilled water (controlling water temperature at 0~35°C, or 0~-40°C). Many users need 24 hours of continuous operation. Therefore, the unit should not have any problems. However, no matter which kind of chiller, if the use time is too long, there will be some troubles. For example, the refrigerant is insufficient. Shenzhen Dongyuejin chiller plant analyzes the problem caused by insufficient refrigerant of screw chiller: screw chiller Responsible for providing industrial chilled water (controlling water temperature at 0~35°C, or 0~-40°C), many users need to operate continuously for 24 hours. Therefore, the unit should not have any problems. But no matter which kind of chiller, if the use time is too long, there will be some troubles, such as insufficient refrigerant.

First, follow the Dongyuejin chiller plant to carefully analyze the problems that may be caused by the lack of refrigerant in the screw chiller refrigeration system:
1. If the refrigerant of the unit is insufficient, the suction pressure and exhaust pressure of the screw refrigeration compressor are lower than the normal value.
2. If the refrigerant is insufficient, the evaporation in the evaporator decreases, and the cooling capacity decreases, resulting in poor cooling performance.
3. The thermal expansion valve will not be frosted or rarely frosted. In the air conditioning condition, there is no condensation, and there is little or no condensation.
4, will cause the evaporator to rarely frost or not frost. In air conditioning conditions, there is no condensation and there is little or no condensation.
5. Due to insufficient refrigerant, the compressor is not operated under the rated load, causing the chiller to be lightly loaded or even idling, and the current is also lower than the rated current.

Since the shortage of refrigerant in the screw chiller will cause so many problems, what happens if the refrigerant is overcharged? The key is what causes the lack of refrigerant in the unit? There are several possibilities:
1. The refrigeration system of the chiller does not charge the refrigerant as required, resulting in insufficient refrigerant.
2. The system's system is not airtight, resulting in refrigerant leakage.
3. Improper operation and maintenance, causing leakage of refrigerant.

Shenzhen Dongyuejin chiller factory reminds you: When the refrigerant of screw chiller is found to be insufficient, the whole system should be strictly and carefully checked to determine the cause or the part where the leak occurs, so as to eliminate the fault and replenish the refrigerant according to the regulations. Resume normal operation. For the screw chiller refrigeration system, as long as the unit is installed correctly and reliably, there is no leakage at the pipe joints, and the system can operate effectively for a long time without replenishing the refrigerant. When there is a refrigerant leak, try to solve the leak and then replenish the refrigerant.

This article was first issued by Shenzhen Dongyuejin Refrigeration. Reprinted please note the original website: http://://news.chinawj.com.cn Edit: (Hardware Business Network Information Center) http://news.chinawj.com.cn