How to Choose Antifreeze for Chiller？

2022/09/30 分類業界ニュース 403

How to Choose Antifreeze for Chiller？

In order to improve the cooling performance of the chiller, it is necessary for enterprises to perform regular maintenance on the chiller after it has been used for a period of time. During maintenance, especially in winter, do not neglect to replace the antifreeze of the chiller. If the chiller is not replaced or filled with antifreeze, the cold temperature in winter will easily cause the pipes to freeze, and the equipment is prone to various common failures when the chiller is operated for a long time, which will seriously affect the service life of the equipment and even lead to an increase in the use cost of the chiller. .

High-quality antifreeze can maintain the safe and stable operation of the chiller. If the enterprise ignores the replacement of antifreeze when maintaining the chiller, the equipment will run for a long time and prone to high temperature failures. The high temperature failure of the chiller not only affects the operating power of the chiller, but also shortens the service life of the chiller. The shortening of the service life of the chiller affects the cost of using the chiller in the enterprise, resulting in the longer the chiller is used in the enterprise, the greater the energy consumption.

Precautions for choosing refrigerant:

1. When choosing antifreeze products, in order to maintain the safe and stable operation of the equipment, it is necessary to regularly select antifreeze with a lower concentration for replacement.

2. When purchasing chiller antifreeze, you need to choose a product with a longer aging time. If the chiller is used for a long time and the probability of equipment failure is low, the cost of replacing antifreeze can be completely controlled. The longer the service life of the antifreeze, the lower the cost of replacing the antifreeze, thus extending the service life of the chiller. The longer the service life of the equipment, the more cost-effective the industrial chiller used by the enterprise, ensuring that the enterprise can complete the production task at a low cost.

When replacing antifreeze products, you need to choose antifreeze that is suitable for equipment operating standards. If the operating index of antifreeze is low, it is easy to cause common failures of chillers, jeopardizing the operation safety and equipment life. Replacing the antifreeze suitable for the equipment can prolong the service life of the antifreeze and provide conditions for saving the operating cost of industrial chillers.

The three most common and easy-to-use refrigerants:

1. Ethanol, with low freezing point and low boiling point, is generally not used for fire prevention.

2. Glycerin, the price of mixing with water is very high and not very economical.

3. The freezing point of ethylene glycol is -11.5°C, the boiling point is 197.4°C, and the lowest freezing point after mixing with water can reach -68°C; ethylene glycol is easy to corrode metals, so preservatives should be added when preparing antifreeze. Generally, 2.5~3.5 grams of disodium hydrogen phosphate and 1 gram of dextrin are added per liter of antifreeze; ethylene glycol is highly hygroscopic, and the storage container should be sealed; ethylene glycol is not easy to volatilize, so it has a wide range of applications. Various types of antifreeze expand and contract when heated, and can only reach 95% of the total volume of the cooling system during water injection; after the antifreeze is prepared, its freezing point temperature should be 5°C lower than the lowest temperature in the area of use.

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