The screw chiller is designed to provide industrial chilled water, maintaining a temperature range of 0~35°C or even as low as 0~-40°C. Many users require 24/7 continuous operation, which means the unit must be reliable and free from issues. However, regardless of the type of chiller, prolonged use can lead to various problems. One common issue is refrigerant deficiency. Shenzhen Dongyuejin Chiller Plant has analyzed the causes and effects of refrigerant shortages in screw chillers.
Screw chillers are responsible for delivering precise cooling in industrial applications, often operating around the clock. This high level of usage demands consistent performance. Yet, over time, issues like refrigerant loss can occur, leading to inefficiency and potential system failure. Here’s a detailed breakdown of the problems that may arise due to insufficient refrigerant:
1. If the refrigerant level is low, the suction and discharge pressures of the screw compressor will drop below normal levels.
2. A lack of refrigerant reduces the evaporation process in the evaporator, resulting in decreased cooling capacity and poor overall performance.
3. The thermal expansion valve may not frost properly, and in air conditioning conditions, there might be little or no condensation.
4. Frosting on the evaporator will be minimal or absent, and in air conditioning mode, condensation may not form at all.
5. Insufficient refrigerant can cause the compressor to run under light load or even idle, leading to lower current draw than expected.
If the refrigerant is overcharged, it can also cause serious operational problems. So, what leads to refrigerant shortage in the first place? There are several possible causes:
1. The refrigeration system was not charged with the correct amount of refrigerant during installation.
2. The system is not completely sealed, allowing refrigerant to leak out over time.
3. Improper maintenance or incorrect operation can result in refrigerant leaks.
Shenzhen Dongyuejin Chiller Factory advises that if refrigerant deficiency is detected, the entire system should be thoroughly inspected to identify the source of the problem or the location of the leak. Once the issue is resolved, the refrigerant should be refilled according to manufacturer specifications to restore normal operation.
For a properly installed and maintained screw chiller, the system should operate efficiently for a long time without needing additional refrigerant. However, if a refrigerant leak occurs, it's crucial to fix the leak before recharging the system. This ensures optimal performance and prevents further damage.
This article was originally published by Shenzhen Dongyuejin Refrigeration. Please note the original website when reprinted: http://news.chinawj.com.cn
Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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