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In ice-making cooling systems used in chemical plants, refrigerants are generally used to cool the ethylene glycol water solution, which in turn is used to cool various end-users. I would like to know whether it is possible to use refrigerants directly to cool these end-users What are the limitations?
It is recommended to first learn about the various types of refrigeration equipment widely used in the market to determine which one is suitable for you. Compare existing equipment based on factors such as energy savings and consumption reduction, as well as investment in technological upgrades, and then discuss the current topic. First, respect the original design; second, understand the characteristics of the existing equipment and, based on that knowledge, submit written suggestions for more reasonable improvements. The key question is whether your current equipment meets the requirements for production safety, namely whether it is equipped with special cooling systems.
Sure, using a refrigerant directly has its advantages and disadvantages. Refrigeration methods are divided into direct cooling, that is, compression condensing units, where the refrigerant is directly delivered to the end units. Indirect cooling is what you mean by using a coolant to cool the material. Relatively speaking, direct cooling for heat exchange is more energy-efficient; the evaporation temperature required for selecting a compressor in this case is higher than that in indirect cooling, the compressor selected needs to have lower specifications compared to those used in indirect cooling, the shaft power is lower, and so is the motor power. However, with direct cooling, the distance between the liquid reservoir and the end unit must be taken into account, as well as load fluctuations; load control via direct expansion is not as stable as that with indirect loading. If both of these problems are resolved, then a fluorine barrel pump should be used for liquid supply; this technology is most commonly employed in the polysilicon industry! The system’s oil return performance is also very good. Secondly, the amount of refrigerant required is much greater than that in indirect cooling units, and for maintenance purposes, it may be necessary to recover a large quantity of refrigerant. .
Is the refrigerant non-toxic? Aren’t you worried about leaks?