How to prevent freezing of industrial chillers

In cold seasons or low-temperature environments, industrial chillers may face the risk of freezing damage, so it is very important to take effective anti freezing measures. Here are some common antifreeze strategies:

1. Using antifreeze: Adding antifreeze to the cooling system is the most common method of antifreeze. Antifreeze is usually made by mixing water with antifreeze agents (such as ethylene glycol or propylene glycol), which can lower the freezing point of the liquid and prevent the coolant from freezing at low temperatures.

2. Insulation measures: Insulate the pipes, water storage tanks, and coolers of the chiller to reduce heat loss and lower the risk of icing. Common thermal insulation materials include polyurethane, foam plastic, etc. These materials have good thermal insulation performance.

3. Keep the equipment running: In cold weather, try to keep the chiller running as much as possible, even under low load conditions. The running chiller is not prone to freezing because the flowing liquid is not easily frozen.

4. Set up alarm system: Install temperature monitoring and alarm system. When the temperature drops to the set threshold, the system will issue an alarm to prompt maintenance personnel to take corresponding measures. This can help identify potential frost damage risks in a timely manner.

5. Regular maintenance and inspection: Regularly inspect and maintain the chiller to ensure that all components (such as water pumps, valves, compressors, etc.) are working properly and prevent freezing problems caused by malfunctions. Especially before entering the cold season, it is necessary to conduct a comprehensive inspection of the equipment.

6. Optimize system design: When designing a chiller system, it is possible to consider designing a dual circulation water system and installing drainage devices to allow the system to be emptied when not in use, avoiding the accumulation of coolant in the pipeline and causing freezing.

7. Reasonably arrange the chiller: avoid placing the chiller in cold and windy places. If conditions permit, the equipment can be installed in a relatively enclosed environment to reduce the direct impact of low temperatures on the equipment.

8. Using an intelligent control system: Modern industrial chillers can be equipped with an intelligent control system that can automatically adjust the cooling working state according to the ambient temperature, or automatically activate anti freezing measures when the temperature drops.

9. Preparation before Winter Shutdown: If the chiller is shut down in winter, it is recommended to perform necessary maintenance and drainage treatment on the system before shutdown to prevent liquid from freezing in the pipes and coolers.

Through the above measures, the risk of freezing damage to industrial chillers in low-temperature environments can be effectively reduced, ensuring the normal operation of the equipment.