Which one uses less power?
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There is a project in progress that requires the installation of 300,000-kilowatt cooling equipment. If 3 refrigerators, each with a capacity of 100,000 kilowatts, are used, then each refrigerator will be equipped with a motor of 37 KW (grade 6). The demand for freezing capacity in production is not high, so I can shut down one or two units. And if equipped with a chiller of 300,000 kcal, the motor power is 132 KW (grade 6). When the amount of freezing in production is not large, I can also operate at 1/3 or 2/3 load. May I ask, if we account for the difference in total KW, which one is more power-efficient? :handshake :handshake
From an economic perspective, it might be better to have just 1 unit, as the costs associated with repairs and maintenance are lower, and there should not be a significant difference in electricity consumption.
That approach is more power-efficient, and it requires careful calculation based on efficiency. However, from the perspective of operational safety, a multi-unit setup is safer. If a continuous supply of refrigerant is required, there is only one unit, and any failure will affect production.
A machine operating normally is certainly energy-efficient, but one with high operational risks is not. Therefore, one unit is not recommended.
From a safety perspective, it’s more stable to use multiple units
Surely, 36 units are the most energy-efficient; when the load on a single unit is low, its efficiency drops
In my opinion, choosing one large and one small unit is more appropriate; it enhances the safety and reliability of use, helps save electricity, and the associated costs are not much higher.
Check how much cooling capacity the security system requires, and you can consider using one larger unit and one smaller one.
Of course, it is best and most energy-efficient to choose a unit that can provide 300,000 BTU of cooling capacity. If the chiller is a truly critical piece of equipment, it is possible to consider adding another one, with the cooling capacity being set at the minimum level required for safety, so that one unit can be in use while the other serves as a backup.
From the perspective of equipment usage, it is best not to use just one unit; at the very least, one unit should be used while another serves as a backup. Moreover, a motor with 300,000 horsepower will not save energy if no frequency converter is installed. Therefore, I recommend choosing two or three units instead.
One unit is energy-efficient; from a safety perspective, it’s better to have multiple units.