How to choose the antifreeze liquid for the chiller?
In order to smoothly improve the cooling performance of the chiller, after a period of use, the company needs to maintain the chiller regularly, and during maintenance, especially in winter, do not neglect to replace the antifreeze for the chiller. If you do not replace or add antifreeze when maintaining the chiller, the cold temperature in winter will easily cause freezing pipes. When the chiller is operated for a long time, the equipment is prone to various common failures, which seriously affects the service life of the equipment, and even causes cold water The cost of using the machine continues to increase.
High-quality antifreeze can keep the chiller running safely and stably. If the company neglects the replacement of the antifreeze when maintaining the chiller, the equipment will run for a long time and easily cause high temperature failure. When the chiller is at a high temperature, it not only affects the operating power of the chiller, but also causes the operating life of the chiller to continue to shorten. The shortened lifespan of the chiller affects the cost of using the chiller for the enterprise, and the longer the chiller is used, the more energy it consumes.
Then, how to choose the antifreeze for the chiller?
1. When choosing antifreeze products, in order to maintain the safe and stable operation of the equipment, it is necessary to periodically select a lower concentration antifreeze for replacement.
2. When buying antifreeze for chillers, you need to choose products with a longer use time. If the chiller is used for a long time and the probability of equipment failure is low, then the cost of replacing the antifreeze for the company can be fully controlled. The longer the antifreeze is used, the lower the cost of the company to replace the antifreeze, thereby extending the service life of the chiller. The longer the life of the equipment, the higher the cost-effectiveness of the company's use of industrial chillers, ensuring that the company can complete production tasks at low cost.
When replacing antifreeze products, it is necessary to select an antifreeze that meets the operating standards of the equipment. If the operating index of the antifreeze is low, it is easy to cause common failures of the chiller and endanger the operational safety and life of the equipment. Changing the antifreeze that is suitable for the equipment can extend the service life of the antifreeze and provide conditions for saving the cost of operating industrial chillers.
The commonly used antifreezes mainly include:
①Ethanol, which has a relatively low freezing point and boiling point, is generally not used to prevent fire.
②Glycerin, mixed with water, is very expensive and not very economical.
③Glycol, the freezing point of ethylene glycol is -11.5°C and the boiling point is 197.4P, and the lowest freezing point after mixing with water can reach -68P; ethylene glycol is easy to corrode metals, and anti-corrosion agent should be added when preparing antifreeze. Add 2.5 to 3.5 grams of disodium hydrogen phosphate and 1 gram of dextrin per liter of antifreeze; ethylene glycol has strong hygroscopicity, and the storage container should be sealed; ethylene glycol is not volatile, and the dosage is small during preparation, so it is widely used. The thermal expansion of various antifreeze fluids is relatively large and can only be added to 95% of the total capacity of the cooling system when filling; when the antifreeze fluid is deployed, its freezing point should be 5 degrees lower than the lowest temperature in the area of use.