Selection Factors of Low Temperature Chiller Refrigerant

2022/09/14 ClassificationIndustry News 207

Selection Factors of Low Temperature Chiller Refrigerant

The refrigerant is an intermediate medium, and its heat capacity is large, so it is easy to keep the temperature of the object to be cooled stable. The commonly used refrigerant for low-temperature chillers is inorganic salt water solution, because it has low solidification stability and can be used in occasions with low evaporation temperature, such as calcium chloride aqueous solution, magnesium chloride aqueous solution, and sodium chloride aqueous solution.

Depending on the temperature control range, the choice of refrigerant must also be different. Therefore, when choosing a refrigerant, the user should consider the following factors:

1. The refrigerant must be kept in a liquid state within the working range, and the freezing temperature is lower than the working temperature, and the boiling point is higher than the working temperature;

2. The specific heat capacity of the refrigerant is large and the heat transfer is good, so that the low-temperature chiller does not need too much flow when transferring the cooling capacity, which can reduce the transmission power and save materials;

3. The refrigerant should not be too viscous and the viscosity should be small, so as to reduce the flow resistance and reduce the transmission power;

4. The selected refrigerant is non-flammable, non-explosive, non-toxic, and has better chemical stability;

5. The refrigerant does not corrode pipes or equipment, and the price is affordable.

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